Performance Sealing Products

for Hydraulic Fluid Power Equipment

Catalog EPS 5371

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Contents

INTRODUCTION............................................... 3
Products for Reciprocating SYMMETRIC SEALS........................................ 65
Fluid Power Equipment...................................... 4 Symmetric Profiles.......................................... 65
Symmetric Decision Tree................................. 66
General Application Guidelines........................... 6 FlexiSeal® FBC................................................ 67

ENGINEERING ................................................. 8 ROD WIPERS.................................................. 75

Effects of Lip Geometries................................. 10
Rod Wiper Profiles........................................... 75
Surface Speed................................................ 13
General Guidelines for Hardware Design........... 15 Rod Wiper Decision Tree.................................. 76
Hardware Surface Finish.................................. 16 YD.................................................................. 77
Surface Finish FAQs........................................ 20 J.................................................................... 80
Installation Tools — Piston Seals...................... 23
AY.................................................................. 83
Installation Tools — Rod Seals.......................... 24
AD................................................................. 87
MATERIALS.................................................... 26
Typical Physical Properties.............................. 27 WEAR RINGS / BEARINGS............................... 91
Chemical Compatibility.................................... 29 Wear Ring Profiles........................................... 91
Temperature Limits......................................... 29 FAQs.............................................................. 92
Storage and Handling...................................... 30 Materials........................................................ 94
WPT............................................................... 95
WRT............................................................... 98
ROD SEALS.................................................... 31
PDW............................................................ 101
Rod Seal Profiles............................................. 31
Rod Seal Decision Tree................................... 32
BT................................................................. 33 POLYURETHANE O-RINGS and D-RINGS....... 111
O-Ring and D-Ring Profiles............................ 111
BD ................................................................ 38
568 Resilon® O-Ring...................................... 112
BD with Back-Up Ring..................................... 42
DG Resilon® Polyurethane D-Ring.................. 122
BR................................................................. 46

PISTON SEALS............................................... 51
Piston Seal Profiles......................................... 51
Piston Seal Decision Tree................................ 52
BP................................................................. 53
CT................................................................. 56
OE................................................................. 60

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Table of Contents
INTRODUCTION

Parker Hannifin is the industry leader for sealing system

solutions for the fluid power industry.
Parker Engineered Polymer Systems Division offers equipment manufacturers
the most comprehensive selection of fluid power seals for reciprocating hy-
draulic
applications. Our innovative technology and value-added services allow us to
engineer your success with leading edge material development, experienced
design, high quality manufacturing, and outstanding customer service. Parker
is your one source manufacturer and sealing solution partner.

PERFORMANCE PRODUCTS FOR RECIPROCATING FLUID

POWER EQUIPMENT
Products contained in this catalog represent an elite collection of advanced
profile and engineered material combinations. Our “systems approach”
in developing advanced compounds and seal geometries that enhance
performance for today’s fluid power equipment is rooted in decades of
material development, field experience, and close collaboration with industry-
leading equipment manufacturers. Additionally, our design engineering
team utilizes computer-aided simulation and analytical tools, including non-
linear finite element analysis (FEA), which is used to predict the functional
performance characteristics and service life of our products in critical
applications.

STANDARD SIZES, AVAILABILITY

Parker sealing product designs conform to conventional glands for a wide
range of applications, from industrial machinery to mobile equipment, which
has to perform under toughest pressure, temperature and media conditions.
Configured part numbers contained in gland dimension tables may be
ordered from Parker without necessity of Production Preparation Charge
(“PPC”) charge. Minimum order quantities apply and lead times may vary.

TECHNICAL ASSISTANCE
If you need assistance, Parker’s team of experienced application engineers
is available for consultation.

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Reciprocating Fluid Power Equipment

PRODUCTS MATRIX
Application (Duty)
Hydraulic
Profile Description Page

Heavy
Light

Med
Rod Seals. Rod seals guard against external leakage and are one of the most vital components of the sealing system.

Premium non-symmetrical U-cup rod seal with a knife trimmed primary

BT lip and molded secondary lip. Standard material is Resilon® 4300. • • • 33
Metric sizes available.

Premium non-symmetrical O-ring energized rod seal with a knife trimmed

BD primary lip and molded secondary lip. Standard material is Resilon® 4300.
• • • 38

BD with Premium non-symmetrical O-ring energized rod seal with a knife trimmed
Back-up primary lip and molded secondary lip with positively actuated back-up. • • • 42
Standard material is 5065 with nylon back-up.

Premium knife trimmed buffer or secondary seal designed to work with a

BR primary rod seal for heavy duty or zero-leak systems. Standard material is • • 46
Resilon® 4300.

Piston Seals. From low pressure to extreme hydraulic shock loading, products meet the demands of uni-directional
and bi-directional pressure, low friction, easy installation, port passing, and zero-drift scenarios.

Premium bi-directional rubber energized urethane cap piston seal.

BP Standard material is Resilon® 4304. Metric sizes available.
• • 35

Four piece capped “T-seal” bi-directional piston seal made from molded
CT rubber • 38
energizer, 0401 PTFE cap, and nylon back-ups.

Bi-directional, rubber energized PTFE cap piston seal for long wear,
OE low friction. Short assembly length requires minimal gland space on the • • 42
piston. Standard materials are 0401 PTFE, 70A NBR energizer.

Symmetric Seals for Rod or Piston Applications. Symmetric profiles are designed to act as either rod or piston seals,
allowing one part number to function in two applications
Symmetric spring-energized PTFE FlexiSeal. Chamfered ID and OD
lip configuration provides concentrated sealing force for maximum
FBC
sealability. Stardard materials are 0100 or 0502 PTFE jacket with medium
• • 49
load, stainless steel cantilever spring.

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Reciprocating Fluid Power Equipment

PRODUCTS MATRIX (Cont’d)
Application (Duty)
Hydraulic
Profile Description Page

Heavy
Light

Med
Wipers. Wipers work in conjunction with rod seals to form the first line of defense in protecting a system and keeping it
free from dirt, mud, water, and other contaminants.

Premium snap-in wiper with OD exclusion lip and a knife trimmed wiping
YD lip. Standard material is Resilon® 4300
• • 59

Standard single-lip, press in place, metal canned wiper with a knife

J trimmed lip for medium and heavy duty hydraulics. Standard material • • 62
is 4700.

Premium snap-in place double-lip wiper for hydraulic applications.

AY Standard material is Resilon® 4300. • • • 65
Metric sizes available.

Double acting, double-lip, rubber energized PTFE wiper. Standard PTFE

AD material is 0401.
• • 69

Wear Rings / Bearings. Tight tolerance wear rings allow for a more precise fit of components, resulting in less dimensional
play. Permit use of smaller extrusion gaps — that extend the seal’s pressure rating versus standard tolerance.

Tight tolerance piston wear ring with chamfered corners. Standard

WPT material is 4788.
• • • 77

Tight tolerance rod wear ring with chamfered corners. Standard

WRT material is 4788.
• • • 80

PDW Precision cut wear ring/bearing machined from PTFE billet material. Rod
and piston chamfer may apply. Standard material is 0307 PTFE.
• • 83

Resilon® Polyurethane O-Rings, D-Ring. High temperature Resilon polyurethane O-rings and D-rings can eliminate
the need for back-ups, simplify installation, and reduce damage due to spiral failure.
High performance polyurethane o-ring made from the Resilon® family of
568 high temperature, low compression set urethanes. Standard material is • • • 94
Resilon® 4300.

One-piece hydraulic valve sealing solution designed to replace O-ring and

DG back-ups in dynamic applications. Standard material is Resilon® 4300.
• • • 104

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General Application Guidelines

Parker’s selection of products is the broadest offering in the industry for hydraulic sealing systems. The table below
provides “General Application Guidelines” to help define possible differences between light, medium and heavy duty
applications. The product profile matrix charts on previous pages show corresponding application duty recommendations
for each profile.

IMPORTANT NOTE: It is not uncommon for the requirements of a sealing system to fall into multiple duty columns. When
this situation occurs you should select the majority of your components from the higher range.

GENERAL APPLICATION GUIDELINES

Hydraulic
Application Parameter
Light Duty Medium Duty Heavy Duty

Pressure Range
<1200 psi <3500 psi >3500 psi
(<83 bars) (<241 bars) (>241 bars)

Pressure spikes that may be

Not to exceed twice the system several times the system pressure
Pressure Spikes None or low pressure. Short duration such as and of a longer duration. These
valve shifting. are often mechanically induced
by forcing the rod in or out.

Temperature Range
0°F to +160°F -20°F to +200°F -45°F to +225°F
(-18°C to +71°C) (-29°C to +93°C) (-43°C to +107°C)

Moderate with cylinder in Moderate to high with the

Contamination Low or non-existent. horizontal or inverted position. cylinder upright — vertical.

Moderate side load with cylinder Longer stroke lengths. Cylinder

None to light with shorter stroke
Side Loading mounted towards the vertical mounted horizontal, heavy side
and vertical cylinder mount. position. Medium stroke. loading.

ADDITIONAL CONSIDERATIONS:
• When selecting a wiper, focus on contamination section.
• In selecting a sealing component you will evaluate the temperature, pressure and pressure spike variables of the
application.
• W ith a wear ring, you will want to look at the temperature and side loading section on page 74. This does not
preclude the need to consider such things as fluid being sealed and stroke speed.

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General Application Guidelines

Care is taken in the preparation of this publication; however Parker shall not be responsible for a user’s reliance on any
inadvertent typographical errors or omissions. Information in this catalog is only accurate as of the date of publication.
We reserve the right to modify and update information at any time.

WARNING — USER RESPONSIBILITY For special requirements (pressure, temperature, speed, etc.)
This document and other information from Parker Hannifin please contact our consultancy service, so that suitable
Corporation, its subsidiaries and authorized distributors materials and/or designs can be recommended.
provide product or system options for further investigation by
users having technical expertise.
COMPATIBILITY OF SEALS AND OPERATING
The user, through its own analysis and testing, is solely MEDIA / CLEANING AGENTS
responsible for making the final selection of the system and Due to the great diversity of operational parameters affecting
components and assuring that all performance, endurance, fluidic devices and their impact on seals, it is absolutely
maintenance, safety and warning requirements of the imperative that manufacturers of these devices approve
application are met. The user must analyze all aspects of the seals for functional and operational suitability under field
application, follow applicable industry standards, and follow conditions.
the information concerning the product in the current
product Furthermore, in view of the consistent increase of newly
catalog and in any materials provided by Parker or its available media used as hydraulic oils, lubricants, and
subsidiaries or authorized distributors. cleaning agents, special attention is invited to the aspect of
compatibility with sealing elastomers currently in use.
To the extent that Parker or its subsidiaries or authorized
distributors provide component or system options Additives contained in base media in order to enhance
based upon data or specifications provided by the user, certain
the user is responsible for determining that such data and functional characteristics may affect compatibility
specifications are suitable and sufficient for all applications characteristics
and responsibly foreseeable uses of the components or of sealing materials.
systems. For this reason, it is imperative that any product equipped
with our seals be tested for compatibility with operational
RANGE OF APPLICATION media or cleaning agents approved or specified by you
Our seals may only be used within the application either at your plant or by means of field tests prior to any
parameters stated in our documents as regards compatibility field use.
with contact media, pressures, temperatures and time We kindly ask you to comply with this notice since, as
of storage. Application or use outside of the specified a manufacturer of seals, we are not in a position, as a
application parameters as well as the selection of different matter of principle, to perform simulations of any and all
compounds conditions present in the final application nor of knowing the
by mistake may result in damage to life, the environment composition of the operational media and cleaning agents
and/or equipment and facilities. used.
The information contained in our publications is based
on know-how developed over decades of experience in DESIGN MODIFICATIONS
the manufacturing and application of seals. Despite this We reserve the right to make design modifications without
experience, unknown factors arising out of the practical prior notification.
application of seals may considerably affect the overall
applicability of this information in such a way that the DELIVERY AND SERVICES
recommendations provided herein are not to be considered For the production of smaller quantities, special compounds,
generally binding. and in case of special production procedures, we reserve
the right of charging a production preparation charge at
The data for operating pressure, operating temperature, and our discretion.
surface speed stated in the columns represent maximum
values and are interrelated. Under extreme working All acceptance, deliveries, and services are subject to our
conditions it is recommended not to use all maximum values terms.
simultaneously.

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Table of Contents

ENGINEERING
Contents Parker Fluid Power Seals for All Application
Sealing Theory............................... 2-1 Technologies
Static vs. Dynamic Sealing........... 2-1 Seals have been used since ancient times and have evolved into a
wide variety of shapes and materials. For those who are not familiar
Leakage Control......................... 2-2
with sealing technology, the number of options available can be
Lip vs. Squeeze Seals.................. 2-2 confusing. Selecting the most suitable product for a given application
Effects of Lip Geometries............. 2-3 can be difficult. This engineering section will assist in product selection
by explaining the fundamentals of seal design and material technology.
Friction...................................... 2-3
Pressure Effects and
Extrusion.................................... 2-4 Sealing Theory
Seal Wear................................... 2-5 Static vs. Dynamic Sealing
Seal Stability.............................. 2-6 Every seal, whether static or dynamic, must seal against at least
Surface Speed........................... 2-6 two contacting surfaces. In static applications, both surfaces are
non-moving relative to one another. In dynamic applications at least
Compression Set........................ 2-7
one surface is in motion relative to the other sealing surface(s). For
Influence of Temperature............. 2-7 example, in a standard hydraulic cylinder, the rod and piston seals
General Guidelines for would be classified as dynamic seals, while the seal between the bore
Hardware Design........................... 2-8 and the head gland would be considered a static seal.
Hardware Surface Finish................. 2-9 In both static and dynamic applications, a certain amount of squeeze
Surface Finish Guidelines or compression is required upon installation to maintain contact with
for Reciprocating Seals..............2-11 the sealing surfaces and prevent fluid leakage. Dynamic applications
Surface Finish FAQs.................. 2-13
in particular involve other variables and require that additional factors
be evaluated to ensure proper system performance. These variables
Installation are discussed in this section.
Considerations......................... 2-14
Installation Tools – Piston.......... 2-16
Installation Tools – Rod............. 2-17
Finite Element Analysis................. 2-18

Fig. 2-1. Hydraulic cylinder

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ENGINEERING
Table of Contents

Leakage Control provide the greatest likelihood of minimized leakage.

When choosing a sealing system, the desired
result is ultimately leakage control. Seal design and Lip vs. Squeeze Seals
material improvements have made it possible not The cross-sectional shape of a seal dramatically
only to have seal combinations that provide zero affects how it functions, especially at low pressure.
leakage, but also provide extended life in a variety The greatest trade-off in dynamic sealing is low
of applications. Aside from the seals themselves, friction performance vs. low pressure sealability. At
a thorough understanding of system parameters is low pressure, friction, wear and sealing ability are
necessary to obtain the best results. affected by whether or not the seal is a lip or squeeze
profile (see Figure 2-3). With this in mind, seals are
Optimal sealing is best achieved by taking a
often categorized as either “lip seals” or “squeeze
systems approach to the seal package rather than
seals,” and many fall somewhere in between. Lip
considering components individually. Our profiles
seals are characterized by low friction and low
have been designed specifically to complement
wear; however, they also exhibit poor low pressure
one another to create high performance systems.
sealability. Squeeze seals are characterized by just
For example, pairing a Parker rod seal with a Parker
wiper minimizes fluid leakage and maximizes
contamination exclusion. Our rod seals are designed Lip vs. Squeeze Seal
with knife-trimmed lips to ensure the best possible
film breaking. This dry rod technology permits
Decreasing Sealability
the wiper to be extremely aggressive, excluding
at Low Pressure
contamination without building up oil leakage around
the wiper. Another systems approach to effectively
control leakage is to incorporate multiple sealing lips.
Parker’s BR buffer ring, BT u-cup and AH double-
lip canned wiper are designed to work together to
give optimized performance and the driest sealing
available in the industry (see Figure 2-2). Increasing Friction

Figure 2-3. Lip seal vs. squeeze seal

the opposite: high friction and high wear, but better

low pressure sealability.

As described above, a squeeze type seal will

generate much more sealing force than a lip type
seal. The assumption here is that both seals are
under zero or low pressure. However, as fluid
pressure increases, the differences between seal
types become insignificant due to the force from the
fluid pressure overcoming the designed squeeze.
Pressure generally improves leakage control, but
increases friction and its associated heat, wear and
potential for extrusion.
Figure 2-2. BR, BT, AH sealing system for leakage control
In pneumatic applications, low friction is of the
utmost importance. As such, lip seals are an
Even when appropriate seals are specified, it is excellent choice for these low pressure applications.
still possible to experience leakage due to factors Conversely, in hydraulic cylinders, where high system
extending beyond the seals themselves. Examples pressures easily overcome frictional forces, squeeze
are hardware considerations like surface finish, seals are often the appropriate choice. An example
installation damage, seal storage, chemical wash of a hydraulic application in which a squeeze seal
downs, maintenance and contamination. Adhering would not be appropriate is a gravity returned
to the design recommendations found herein not hydraulic ram. In this case, a lip type hydraulic seal
only for seals, but also for the mating hardware will would generate lower friction, allowing the gravity
return to function properly.

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ENGINEERING Table of Contents

Effects of Lip Geometries Factors that affect the radial force are:
Lip geometry will determine several functions • Pressure
• Material modulus
of the seal. Force concentration on the shaft, film
• Temperature
breaking ability, hydroplaning characteristics and
• Lip geometry
contamination exclusion are all factors dependent • Squeeze vs. lip seal
on lip shape. Table 2-1 shows four different lip
shapes and provides helpful insights for choosing an Factors that affect the coefficient of friction are:
appropriate lip geometry. • Seal material
Table 2-1. Seal Lip Contact Shape • Dynamic surface roughness
• Temperature
Contact Straight • Lubrication
Rounded Beveled Square
Shape Cut

When the proper seal selection is made, most

Seal Lip seals will function such that friction is not a concern.
Shape
However, when friction becomes critical, there are
Shape of several ways to reduce it:
Contact
Force/ • Reduce the lip cross-section
Stress • Decrease lip squeeze
Profile • Change seal material
• Evaluate the hardware’s surface finish
• Reduce system pressure
Film Break- • Improve lubrication
Low High Very High Medium
ing Ability

Lowering friction increases seal life by reducing

Contam- wear, increasing extrusion resistance, decreasing
in-ation Low Very High Low High
Exclusion compression set and the rate of chemical attack.

Tendency
to Hydro- High Very Low Low Medium Breakaway friction must be overcome for
plane
movement to begin. It is influenced by the
Wipers and duration in which an application remains
Typical Pneumatic Piston Rod Seals Piston stationary. The longer the duration, the
Uses U-cups Seals Seals
more lubrication will be forced out from
between the seal and the contacting
surface. The seal material then conforms
Friction to the profile of the surface finish. These
Friction is a function of the radial force exerted by events increase breakaway friction.
the seal and the coefficient of friction between the
seal and the dynamic sealing surface. Reducing
friction is generally desirable, but not always
Stick-slip is characterized by distinct stop-start
necessary. Friction is undesirable because of heat
movement of the cylinder, and may be so rapid that
generation, seal
it resembles severe vibration, high pitched noise or
Arrows represent radial forces wear and reduced
chatter. Seals are often thought to be the source of
system efficiency.
the stick-slip, but other components or hardware can
create this issue.

Causes of stick-slip include swelling of wear

rings or back-up rings, extreme side-loading,
valve pulsation, poor fluid lubricity, external sliding
surfaces or seal pressure trapping. This condition
can be puzzling or difficult to resolve. Possible
causes and trouble-shooting solutions are listed in
the following Table 2-2.

Figure 2-4. Radial force

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ENGINEERING
Table 2-2. Stick-slip Causes and are both helpful in reducing the risk of extrusion. As
Troubleshooting Tips clearance gaps increase, less pressure is required
in order for extrusion to occur. Higher temperatures
can also play a role in this effect by causing seal
Possible Causes Troubleshooting Tips materials to soften, encouraging extrusion at lower
Surface finish out of Verify surface is neither too smooth or pressures. If the seal material chosen is not suitable
specification too rough to be used in the system fluid, softening due to
Poor fluid lubricity Change fluid or use oil treatments or chemical attack can also decrease its ability to resist
friction reducers extrusion.
Binding wear rings Check gland dimensions, check for The following Table 2-3 lists possible causes of
thermal or chemical swell

Side loading Review cylinder alignment, Table 2-3. Extrusion Causes and
incorporate adequate bearing area Troubleshooting Tips
Seal friction Use material with lower coefficient of Possible Causes
friction
Large extrusion gaps
Cycle speed Slow movement increases
likelihood of stick-slip High operating temperature
Soft materials
Temperature High temperature softens seals,
expands wear rings, and can cause High system pressure
thermal expansion
differences within hardware Pressure spikes

Valve pulsation Ensure valves are properly sized and Side loading
adjusted Wear rings
External hardware Review system for harmonic Chemical compatibility
resonance
Troubleshooting Tips
Reduce extrusion gaps
Pressure Effects and Extrusion Check gland dimensions
Extrusion occurs when fluid pressure forces Replace commercial grade wear rings with tight tolerance wear
rings
the seal material into the clearance gap between
mating hardware. Dynamic motion further promotes Incorporate back-up rings
extrusion, as surfaces in motion tend to pull material Evaluate size and positioning of wear rings for side load
resistance
into the extrusion gap, generating additional
Consider harder, higher modulus and tensile strength
frictional forces and heat. This can cause premature compound
failure via several modes. Extruded seal material can Match seal compound for pressure, temperature and fluid
break away and get caught underneath sealing lips, compatibility
creating leak paths. As material continues to break
away, seal geometry erodes, causing instability and
extrusion and troubleshooting tips for preventative or
eventual leakage. Additionally, heat generated from
corrective measures.
added friction will
cause the seals to By definition, the radial gap is one-half of the
take a compression diametrical gap. The actual extrusion gap is often
set, dramatically mistaken as the radial gap. This is too optimistic
shortening their life. in most cases because side loading of the rod and
piston will shift the diametrical clearance to one
Careful design
side. Often, gravity alone is sufficient for this to
considerations
occur. Good practice is to design around worst case
should be evaluated
conditions so that extrusion and seal damage do not
to prevent
occur. Table 2-4 provides maximum radial extrusion
extrusion. For
example, minimizing
clearance gaps and
selecting a proper
As a general rule of thumb, the pressure
material based on
rating of dynamic seals will be approximately
system temperature, Figure 2-5. Extrusion damage
one-half that of static seals.
pressure and fluid

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ENGINEERING
Table 2-4. Typical Pressure Ratings for Standard Seal Compounds in Reciprocating Applications at
+160°F (see Note)

0.005" (0.13mm) Maximum radial gap

(typical gland dimensions without wear rings)
Tight tolerance wear rings, 0.010" (0.25mm)
Standard tolerance wear rings 0.013"
(0.33mm)
Pressure (psi)

Urethane

thane

PTFE
Rubber

Rubber

Rubber

(Plastic)

(Plastic)

filled PTFE
Low Temp

A Polyure-

Nylon

Virgin PTFE

Bronze-filled
70 Shore A

80 Shore A

90 Shore A

60 Shore D

65 Shore D

15% Glass-
P5065A88

90 Shore

40%
Compounds

Note: Pressure ratings are based upon a test temperature of Table 2-5. Factors Influencing Seal Wear
+160°F (+70°C). Lower temperatures will increase a material’s
pressure rating. Higher temperatures will decrease pressure Factors that Influence Seal Wear
ratings. Maximum radial gap is equal to the diametrical gap when
wear rings are not used. Wear rings keep hardware concentric, Rough surface finish Excessive abrasion may occur above
but increase extrusion gaps to keep metal-to-metal contact from 12 µin Ra
occurring, thereby decreasing pressure ratings when used.
Ultra smooth surface Surface finishes below 2 µin Ra can
finish create aggressive seal wear due to
lack of lubrication
gaps for various seal compounds.
High pressure Increases the radial force of the seal
against the dynamic surface
As noted in Table 2-4, pressure ratings decrease
when wear rings are used due to the larger extrusion High temperature While hot, materials soften, thus
reducing tensile strength
gaps required to eliminate metal-to-metal contact.
If wear rings are used, be sure to consult Section Poor fluid lubricity Increases friction and temperature at
9 (Wear Rings) and Section 10 (Back-ups) for sealing contact point
appropriate hardware dimensions. Wear ring
Tensile strength of seal Higher tensile strength increases the
hardware dimensions for the piston and rod throat compound material’s resistance to tearing and
diameters always supersede those dimensions called abrading
out for the seals themselves.
Fluid incompatibility Softening of seal compound leads to
reduced tensile strength
Seal Wear Coefficient of friction of Higher coefficient materials generate
Seals will inevitably wear in dynamic applications, seal compound higher frictional forces
but with appropriate design considerations, this can
be minimized. The wear pattern should be even and Abrasive fluid or con- Creates grooves in the lip, scores the
tamination sealing surface and forms leak paths
consistent around the circumference of the dynamic
lip. A small amount of even wear will not drastically Extremely hard sealing Sharp peaks on hard surfaces will
affect seal performance; however, if the wear surface not be rounded off during normal
contact with the wear rings and seals,
patterns are uneven or grooved, or if the amount of accelerating wear conditions
wear is excessive, performance may be dramatically
reduced. There are many factors that influence seal

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Table of Contents
ENGINEERING
wear, many of which are described in the following stability of a seal are:
Table 2-5. • Percent gland fill
• Hardness or stiffness of the seal material
Seal wear may be indicated by flattening out of the • Rough surfaces which create high friction
contact point, or, in extreme circumstances, may • Cross-section (larger is better)
• Design features of a seal (i.e. stabilizing lip, non-sym-
metrical design). Figure 2-8 illustrates how design
features can make a seal more stable. In the first FEA
plot, the seal is centered in the gland and does not
incorporate a stabilizing lip. In the second plot, the
seal is loaded against the static gland and includes
a stabilizing lip. Stability has been enhanced by the
design changes.
•
•
•
•
•
•
•
Figure 2-6. Seal wear on dynamic surface •
•
appear along the entire dynamic surface as shown in •
Figure 2-6. •
•
Plot 1 Plot 2
Seal Stability Figure 2-8. Design improvements for increased stability
Dynamic stability is integral to a seal’s
performance, allowing the lip to effectively contact
the sealing surface, eliminating rocking and pumping Surface Speed
effects and promoting an even wear pattern at the The surface speed of a reciprocating shaft can
sealing contact point. Instability can create leakage affect the function of a seal. Hydroplaning and
and seal damage. A typical instability malfunction frictional heat may occur with excessive speed, while
known as “spiral failure” can occur when o-rings are stick-slip, discussed previously in the friction section,
used in reciprocating applications. Due to frictional is most often associated with slow speed.
forces that occur while the system is cycling, the
o-ring will tend to roll or twist in the groove, causing Hydroplaning occurs when hydrodynamic forces
leakage and even possible breakage. A square lift the sealing lip off of the dynamic surface, allowing
geometry will tend to resist this better than a round fluid to bypass the seal. The lip geometry, as well as
profile, but is not impervious to instability failure. the overall force on the lip, will influence its ability to
Rectangular geometries provide the best stability in resist hydroplaning. Most hydraulic seals are rated
dynamic applications. for speeds up to 20 inches/second (0.5 m/second),
but this may be too fast for certain lip geometries
Other less obvious factors that influence the or when the seal has a lightly loaded design. Table
2-1 on page 2-3 shows which lip geometries are
subject to hydroplaning. Straight cut and beveled
lip geometries are the most effective at resisting
hydroplaning so long as sufficient lip loading is
present to overcome the hydrodynamic forces.

High surface speeds can create excessive

frictional heat. This can create seal problems when
the dynamic surface is continuously moving. The
under-lip temperature of the seal will become much
hotter than the system fluid temperature, especially
when the seal is under pressure. If the heat being
generated cannot be dissipated, the seal will
Fig. 2-7. Instability failure of a square experience compression set, wear, extrusion and/or
profile piston seal increased chemical attack.

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Compression Set Influence of Temperature

Compression set is the inability of a seal to return All seal materials have a specified operating
to its original shape after being compressed. As temperature range (see Section 3, Materials). These
defined by ASTM, it is the percent of deflection
by which the seal fails to recover after a specific
deflection, time and temperature. Compression set
is calculated using the following equation:

HI - HR
Compression Set = H - H X 100
I C

where
Compression
Set
Deflected Recovered

HI HC HR

Figure 2-9. Seal exhibiting nearly 100%

compression set

HI = Initial height
temperatures are provided as guidelines and should
HC = Compressed height
not be used as specification limits. It is wise practice
HR = Recovered height
to stay well within this range, knowing that physical
Compression set reduces sealing forces, resulting properties are severely degraded as either limit is
in poor low pressure sealability. It takes place approached.
primarily because of excessive exposure to a high
temperature. A material’s upper end temperature Temperature affects extrusion, wear, chemical
limit may give an indication of its compression resistance and compression set, which ultimately
set resistance. Although compression set always influences the sealing ability of a product. High
reduces the seal’s dimensions, chemical swell or temperatures reduce abrasion resistance, soften
shrinkage can either positively or negatively impact materials, allowing them to extrude at lower
the final geometry of the seal. If material shrinkage pressures, increase compression set and can
occurs due to the system fluid, the deflection of accelerate chemical attack. Low temperatures can
the seal will decrease, accelerating leakage. If cause materials to shrink and harden, reducing
chemical swell is present, it can negate or offset the resiliency and sealability. Some of these problems
negative effects of compression set. While it is true can be solved by using low temperature expanders
that swelling can offset compression set, extreme or metal springs as a component of the seal selection
fluid incompatibility can break down the polymer’s (see Section 3, Materials).
chemical structure and cause the material to be
reformed in its compressed state

The seal shown in Figure 2-9 exhibits nearly 100%

compression set with minimal wear. Note how the
lips flare out very little.

Lip wear is also a dimensional loss,

but is not related to compression set.
Figure 2-10. Progressive effect (hydrolysis)
Dimensional loss due to lip wear will of high temperature water on standard
increase the final compression set value. urethane seals (yellow) vs. Parker Resilon®
4301 polyurethane seals (aqua).

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General Guidelines for Hardware Design

For easy assembly and to avoid damage to the seal during assembly, Parker recommends that designers
adhere to the tolerances, surface finishes, leading edge chamfers and dimensions shown in this catalog.

Table 2-6.
Installation Chamfer, Gland Radius, and Taper Installation Chamfer, Gland Radius, and Taper
Seal “A” “R” Seal “A” “R”
Cross Section Dimension Dimension Cross Section Dimension Dimension
1/16 0.035 0.003 9/16 0.130 0.030
3/32 0.050 0.015 19/32 0.135 0.040
1/8 0.050 0.015 5/8 0.145 0.040
5/32 0.070 0.015 21/32 0.150 0.040
3/16 0.080 0.015 11/16 0.160 0.040
7/32 0.080 0.015 23/32 0.165 0.040
1/4 0.080 0.015 3/4 0.170 0.040
9/32 0.085 0.015 25/32 0.180 0.060
5/16 0.085 0.015 13/16 0.185 0.060
11/32 0.085 0.015 27/32 0.190 0.060
3/8 0.090 0.015 7/8 0.200 0.080
13/32 0.095 0.015 29/32 0.205 0.080
7/16 0.105 0.030 15/16 0.215 0.080
15/32 0.110 0.030 31/32 0.220 0.080
1/2 0.120 0.030 1 0.225 0.080
17/32 0.125 0.030

Figure 2-11.

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Hardware Surface Finish The three surface finishes shown in Figure 2-12 all
have the same Ra value but very unique
Understanding and applying the benefits of
characteristics.
appropriate surface finish specifications can
The first profile (A) RMS = Rq. The Root Mean
dramatically affect the longevity of a sealing system.
is an example of Square (RMS) as defined
In a dynamic surface, microscopic variations form
a proper surface by ISO 4287:1997 and other
recesses which hold an oil film between the seal lip
finish for dynamic standards is often defined
and the moving surface. If the surface is too smooth,
seals in which the as Rq. These terms are
friction and seal wear will be high because this oil
sharp peaks have interchangeable.
film will not be present. If the surface is too rough,
been minimized
the variations will create leak paths and accelerate
or removed. Rq ≠ Ra. Confusion has
lip wear. For these reasons, it is critical to have an
The second typically existed regarding
in depth understanding of surface finishes as they
profile (B) will these values, leading to
pertain to dynamic sealing systems. As such, Parker
exhibit high wear misconceptions that they
recommends following the guidelines for surface
characteristics are interchangeable. Rq
finish as outlined below or conducting individual
because of the and Ra will never be equal
testing for specific applications to validate seal
wide spacing on typical surfaces. Another
function and expected life.
between the misconception is that there
peaks. The third is an approximate 11%
Over the years, greater attention has been given
profile (C) will also difference between the two.
to this subject as realizations about warranty
wear out the seals Ground and polished surfaces
savings and system life become more prevalent.
As equipment required to measure and maintain a quickly because of can have Rq values that are
proper surface finish has evolved and improved, the its extremely sharp 20 to 50 percent higher than
peaks. Ra. The 11% difference would
subject of surface finish has become more complex.
only occur if the surface being
Traditional visual inspection gauges are no longer
Ra is sufficient measured took the form of
sufficient to effectively measure surface finish.
to define the a true sine wave. A series of
Profilometers are now commonly used to achieve
magnitude of tests conducted at Parker has
precise measurements with repeatable results. In
surface roughness, shown Rq to be 30% higher
the same way, the terms used to define a surface
but is insufficient than Ra on average.
finish have also advanced.
to define a surface
entirely in that it What’s the Significance?
For many years, a single surface parameter has
only describes the Specifications previously
often been used to quantify surface finish. RMS
average deviation based on a maximum surface
(also known as Rq) stands for Root Mean Square and
from the mean finish of 16 µin RMS for
has historically been the most typical value. In more
recent years, the Arithmetic Average Roughness, Ra, line, not the nature ground and polished rods
of the peaks and should specify a maximum
has become more frequently specified. Using either
valleys in a profile. finish of 12 µin Ra.
of these parameters by itself is inadequate to define
a proper reciprocating sealing surface. Figure 2-12 To obtain an
depicts why this parameter alone cannot accurately accurate surface
describe a surface finish. description, parameters such as Rp, Rz and Rmr
(tp) can be used to define the relative magnitude of
the peaks and the spacing between them. These
18 µin Ra parameters are defined in Table 2-7, and their
A
combination can identify if a surface is too rough or
even too smooth for reciprocating applications.
18 µin Ra
B There are other parameters that can be considered
for surface finish evaluation. For example,
the limitation of Rt is that it considers only one
18 µin Ra measurement, while Rz, Rp and Rmr consider the
full profile.

Figure 2-12. Different surface finishes yielding same Ra

value

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Table 2-7. Roughness Parameter Descriptions Figure 2-13 graphically represents Ra. The
shaded area, which represents the average height
Parameter Descriptions of the profile, Ra, is equal to the area of the hatched
portion. The mean line, shown in red, splits the
Roughness parameters are defined per ISO hatched area in half and forms the center line for Ra.
4287:1997 and ISO 4288:1996. The graph also shows Rq, which is higher than Ra.
Ra* – Arithmetic average or mean deviation from Figure 2-14 shows the actual surface profile of a
the center line within a sampling length. polished chrome rod.
Rq* – Root mean square deviation from the Upon examination of the profile, it can be seen
center line within a sampling length. that the polishing operation has removed or rounded
the peaks producing a positive affect on the
Rp* – Maximum profile peak height within a
characteristics of the sealing surface, as described
sampling length. Also known as Rpm in ASME
below by Ra, Rp, Rz and Rmr.
B46.1 – 2002.
• Ra = 8.9 µin
Rv* – Maximum profile valley depth within a
• Rp = 14.8 µin (which is 1.7 x Ra, less than the 3x
sampling length. Also known as Rvm in ASME
B46.1 – 2002. guideline)
• Rz = 62.9 µin (which is 7.1 x Ra, less than the 8x
Rz* – Maximum height of profile within a guideline)
sampling length (Rz = Rp + Rv). • Rmr = 74%

NOTE: ISO 4287:1984, which measured five

Figure 2-14 also illustrates how Rp and Rz are
peaks and five valleys within a sampling length,
calculated using the following equations:
is now obsolete. This value would be much lower
because additional shorter peaks and valleys Rp1 + Rp2 + Rp3 + Rp4 +
are measured. Over the years there have been Rp
several Rz definitions used. Care needs to be = Rp5
taken to identify which is used. 5
Rt – Maximum height of the profile within the
evaluation length. An evaluation length is typically
five sampling lengths. Rz = Rz1 + Rz2 + Rz3 + Rz4 +
Rz5
Rmr – Relative material ratio measured at a 5
given height relative to a reference zero line.
Indicates the amount of surface contact area at
NOTE: In the profile shown in Figure 2-14, Rt = Rz2
this height. Also known as tp (bearing length ratio)
because the tallest peak and deepest valley occur in
in ASME B46.1 – 2002.
the same sampling length.
*Parameters are first defined over a sampling
Figure 2-15 considers the same surface and
length. When multiple sampling lengths are
illustrates how the Rmr value of 74% is determined.
measured, an average value is calculated, resulting
To accomplish this, locate the height of the curve at
in the final value of the parameter. The standard
5% material area (this is the reference line or “zero
number of sampling lengths per ISO 4287:1997
line”). From this height, move down a distance of
and ISO 4288:1996 is five.
25% Rz and locate the new intersection point along
the curve. This new intersection point is the actual
Rmr value of 74%.

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Figure 2-13.

Figure 2-14.

Figure 2-15.

Surface Finish Guidelines for Four parameters have been selected to define a
Reciprocating Seals proper surface finish for hydraulic and pneumatic
Recommendations for surface roughness are reciprocating applications. These parameters are
different for static and dynamic surfaces. Static Ra, Rp, Rz and Rmr. For descriptions of these
surfaces, such as seal groove diameters, are parameters, please consult Table 2-8.
generally easier to seal and require less stringent
roughness requirements; however, the type of fluid Grinding as a final process for dynamic
being sealed can affect the guidelines (see Table sealing surfaces is rarely sufficient. In
2-8). It is important to remember that surface finish order to obtain an acceptable Rmr value, the
recommendations will vary depending upon the seal surface must often be ground and polished. If
material of choice. PTFE seals require smoother the surface is not polished in addition to being
finishes than seals made from polyurethane and ground, the ratio of Rp and Rz to Ra will be too
most rubber compounds. high or Rmr ratio too low.

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Table 2-8. Surface Finish Guidelines
Ra Guidelines

Thermoplastic and Rubber Seals PTFE Seals

Application
Dynamic Surfaces Static Surfaces Dynamic Surfaces Static Surfaces

4 µin (0.1 µm) 8 µin (0.2 µm)

Cryogenics — — maximum maximum
Helium Gas 3 to 10 µin 12 µin (0.3 µm) 6 µin (0.15 µm) 12 µin (0.3 µm)
Hydrogen Gas (0.08 to 0.25 µm) maximum maximum maximum
Freon
Air
Nitrogen Gas
Argon 3 to 12 µin 16 µin (0.4 µm) 8 µin (0.2 µm) 16 µin (0.4 µm)
Natural Gas (0.08 to 0.3 µm) maximum maximum maximum
Fuel (Aircraft and
Automotive)
Water
Hydraulic Oil 3 to 12 µin 32 µin (0.8 µm) 12 µin (0.3 µm) 32 µin (0.8 µm)
Crude Oil (0.08 to 0.3 µm) maximum maximum maximum
Sealants
Rp Guidelines

Thermoplastic and Rubber Seals PTFE Seals

Application
Dynamic Surfaces Static Surfaces Dynamic Surfaces Static Surfaces

If Ra ≥ 5 µin If Ra ≥ 5 µin
(0.13 µm), then (0.13 µm), then
Rp ≤ 3 × Ra Rp ≤ 3 × Ra
— —
All media/fluids If Ra < 5 µin If Ra < 5 µin
(0.13 µm), then (0.13 µm), then
Rp ≤ 3.5 × Ra Rp ≤ 3.5 × Ra
Example: If Ra = 4 µin, then Rp ≤ 14 µin.

Rz Guidelines

Thermoplastic and Rubber Seals PTFE Seals

Application
Dynamic Surfaces Static Surfaces Dynamic Surfaces Static Surfaces

Rz ≤ 8 × Ra and 70 µin Rz ≤ 8 × Ra and 64 µin

Rz ≤ 6 × Ra Rz ≤ 6 × Ra
(1.8 µm) maximum (1.6 µm) maximum

All media/fluids
Example: If Ra = 4 µin, then Rz ≤ 32 µin (dynamic calculation)

Note: Rz values above maximum recommendations will increase seal wear rate.

Rmr Guidelines

Thermoplastic and Rubber Seals PTFE Seals

Application
Dynamic Surfaces Static Surfaces Dynamic Surfaces Static Surfaces

45% to 70%
(thermoplastic)
— 60% to 90% —
55% to 85%
All media/fluids (rubber materials)

Rmr is measured at a depth of 25% of the Rz value based upon a reference level (zero line) at 5% material/
bearing area.

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Surface Finish FAQs How can a dynamic surface finish be too

smooth?
What is the difference between RMS (Rq) and There are two areas of concern that have been
observed on extremely smooth surfaces, the first
Ra?
being seal wear, the second being leakage. When
RMS which stands for Root Mean Square (and surface finishes have been measured at or below
now known as Rq), is one way of quantifying the 1 µin Ra, an extremely accelerated seal wear rate
average height of a surface. The Arithmetic Average, has been observed. A small jump to 1.8 to 2 µin Ra
Ra, quantifies the surface in a different manner, shows significant improvement, indicating that the
providing a true mean value. These parameters extremely low range should be avoided. With higher
will almost always be different, but there is not an values showing even greater life extension, the
exact relationship between the two for a typical optimal range for Ra has been determined to be 3 to
sealing surface of random peaks and valleys. If a 12 µin.
surface were to perfectly resemble a sine wave,
the result would place the RMS value 11% higher Regarding leakage, some seal designs that
than Ra, but this is not a very realistic scenario. On function well with 6 to 12 µin Ra finishes begin to
various ground and polished surfaces, RMS has leak when the finish falls below 3 µin Ra. Due to
been observed to be as much as 50% higher than technological advances, there are many suppliers
Ra, but on average, runs about 30% higher. If this who manufacture rods with finishes this smooth. It
30% average difference is applied to a 16 µin RMS is always necessary to validate seal performance,
specification, the maximum recommended value especially if using an ultra-smooth dynamic surface.
would be 12 µin Ra.
When does a dynamic surface finish
Why are Rp and Rz specified as a function of Ra,
become too rough?
and not simply a range?
Although it is possible for some seals to function
Take a shaft with the minimum recommended value when running on rough finishes, there are always
of Ra = 3 µin, for example. Using the formula for Rz, concerns with accelerated wear and leakage control.
the maximum value would be calculated as 24 µin Certain seals have been able to function at 120
(8 x 3). If the requirement simply stated a range that µin Ra finishes for short periods of time, but seal
allowed Rz values up to 70 µin, this large difference life in these cases can be reduced up to five or six
indicates that the surface profile could have many times. On the contrary, some seals have failed at
large, thin surface peaks which would abrade the surface finishes as low as 16 µin Ra when pressure
seal quickly. By the same regard, a maximum Ra was insufficient to effectively energize the sealing
value of 12 µin would result in an Rz value of 96 lips as they rapidly wore out. Even though a rough
µin (12 x 8), which is beyond the recommended finish is not a guaranteed failure mode, it is always
maximum value of 70 µin. The same principle best to stay within the recommended specifications.
applies for Rp: peaks should be removed to reduce Remember that a proper finish also meets the
seal wear via a polishing process. Grinding without
polishing can leave many abrasive surface peaks.

Why is Ry (also known as Rmax) not used in

Parker’s roughness specification?
Ry only provides a single measurement (a vertical
distance from one peak to valley) within the whole
evaluation length. In actuality, there may be several
peaks and valleys of similar height, or there may only
be one large peak or valley. Rp and Rz provide much
more accurate results, showing the average of five
peak to valley measurements (one measurement in
each of the five sampling lengths). Furthermore, ISO
4287:1997 and ISO 4288:1996 standards no longer
incorporate the use of Ry.

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recommendations for Rp, Rz and Rmr listed in the is seldom sufficient and it usually requires either
surface roughness guidelines. a safety tool or masking to protect the seal
against such damage.
Installation
3. Lubrication. Both the seal and its installation
path must be lubricated prior to insertion. The
Considerations lubricant should be selected for its compatibility
Installation techniques may vary considerably
from case to case, depending on whether a seal is Table 2-9. Seal Installation Lubricants
being replaced as a maintenance procedure or being
Temp.
installed in the original manufacture of reciprocating Type Range Seal Use Seal Material
Compatibility
assemblies. Variations also arise from differences °F (°C)
in gland design. A two-piece, split gland design,
although rarely used, poses fewer problems than a Pet- -20 to +180 Hydrocar- Molythane®,
ro-leum (-29 to +82) bon fluids; Resilon®,
“snap-in” groove positioned deep inside the body base Pneumatic Polymyte®,
of a long rod gland. In production situations, or (Parker systems Nitroxile®, HNBR,
O Lube) under 200 NBR, FKM,
where frequent maintenance of similar or identical psi (DO NOT use
assemblies is performed, it is customary to utilize with EPR)
special tools to permit fitting a seal into its groove Silicone -65 to +400 General pur- Molythane,
grease (-54 to pose; High Resilon, Polymyte,
without overstressing it or subjecting it to nicks and or oil +204) pressure Nitroxile, HNBR,
cuts during insertion. (Parker pneumatic NBR, EPR, FKM
Super O
Lube)
The common issues associated with all installation
Barium -20 to +300 Pneumatic Molythane,
procedures are: grease (-29 to +149) systems Resilon, Polymyte,
under 200 Nitroxile, HNBR,
psi NBR, FKM
1. Cleanliness. The seal and the hardware it
must traverse on its way into the groove, as well Fluoro- -65 to +400 Oxygen EPR
as the tools used to install the seal, must be carbon (-54 to service
fluid +204)
cleaned and wiped with lint-free cloths.

2. Nick and Cut Protection. Threads, sharp

corners and burrs can damage the seal. Care
should be taken to avoid contact with these
with the seal compound and the working fluid
surfaces. Burrs must be removed, sharp
it will later encounter. Often, the working fluid
corners should be blunted or radiused, and
itself can be used as the lubricant (see Table
threads should be masked or shielded with
2-9).
special insertion tooling (see Figure 2-16).
Although it is good practice to take extra care in 4. Lead-in Chamfer. A generous lead-in
the handling and manipulation of the seal, this chamfer will act as a guide to aid in seal
installation. With

Lead-in
Chamfer

Rod or
Bore Dia

Figure 2-16. Thread protection installation tool cutaway view

Figure 2-17. Seal installation lead-in chamfer

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the proper lead-in chamfer, the seals can be 8. Itemize and Use a Check List. All components
installed without lip damage. Refer to Figure required to complete a sealing assembly should
2-17 below and Table 2-6 on page 2-8 for be itemized and checked off as they are installed.
proper lead-in chamfer dimensions. The absence of any single component can cause
the entire system to fail.

5. Heating. Where harder or fabric-reinforced

compounds are used in snap-in applications,
elasticity of the seal may fall short of that
required for stretching or compressing onto
(or into) the groove. Since seal compounds
characteristically exhibit a high thermal
coefficient of expansion, and tend to soften
somewhat when heated, it is sometimes
possible to “soak” the seals in hot lubricant
to aid installation. Be sure to observe the
compound temperature limits, and avoid
heating the seals while stretched. Heating a
seal while stretched will invoke the Gow-Joule
effect and actually shrink the seal.

6. Cross Section vs. Diameter. Care must be

taken to properly match a seal’s cross-section
to its diameter. If the cross-section is too large
in relation to the diameter, it will be difficult to
snap-in or stretch the seal into the groove.
Table 2-10. Seal Cross Section vs. Diameter
Installation Guide

Installation Guide
Cross Section vs. Diameter

Minimum Diameter Minimum Diameter

Cross Rod Seal Piston Seal
Section
Poly- Poly-
Polymyte Polymyte
urethane urethane
1/8" .750 I.D. 1.000 I.D. 1.250 I.D. 1.750 I.D.
3/16" 1.000 I.D. 1.750 I.D. 1.750 I.D. 2.750 I.D.
1/4" 1.750 I.D. 2.750 I.D. 3.000 I.D. 4.500 I.D.
3/8" 3.000 I.D. 5.000 I.D. 6.000 I.D. 8.000 I.D.
1/2" 6.000 I.D. 8.000 I.D. 10.000 I.D. 12.000 I.D.
3/4" 8.000 I.D. 9.000 I.D. 15.000 I.D. 17.000 I.D.
1" 10.000 I.D. 10.000 I.D. 20.000 I.D. 25.000 I.D.

This condition is typically only associated

with polyurethane, Polymyte® and other high
modulus materials. The data shown in Table
2-10 may be used as a guide to determine this
relationship for ease of installation.

7. Installation Tools. Use installation tools as

recommended (see pages 2-16 and 2-17).

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Installation Tools — 6. If back-up rings are to be used, install split versions into their
Piston Seals proper location or use the mandrel method in Step 5 for non-
The installation of piston seals can split rings.
be greatly improved with the use of
installation tooling. Tooling not only 7. For PTFE cap seals, slide the resizing tool over the seal to
makes the installation easier, but compress the seal to its original diameter (Figures 2-20,
also safer and cost effective for high 2-21).
volumes as seals are less likely to be
16 (0.4)
damaged when using proper tooling.
For piston seal installation using
tooling, use the following steps: Blend Radius

5° - 10°
1. Inspect all hardware and tooling
for any contamination, burrs
or sharp edges. Clean, debur, 0.015 in. Max
chamfer, or radius where (0.038mm)
necessary. Make sure the piston Min. Seal ID
minus 0.100
and groove are undamaged. in. (2.54mm)

2. If using a two-piece energized cap

seal, install the o-ring or rubber
energizer into the groove per Figure 2-18. Expanding mandrel
vendor specifications.

3. Install the expanding mandrel onto Piston Expanding

Piston Ring Mandrel
the piston (Figure 2-18).

4. Light lubrication and/or warming

(+140°F max) may aide installation.
Use system compatible lubricant
only.

5. Place the seal onto the expanding

mandrel, and using hand pressure
or a pusher, if necessary, gently
push the seal along the taper until
Piston Ring
it snaps into place (Figure 2-19). Groove Pusher

Figure 2-19. Installation of piston seal with tooling

Resizing Tool Resizing Tool

5° - 10° Piston

16 (0.4)

Max. Seal OD +
2x Seal Cross
Section

Blend Radius

Seal

Figure 2-20. Resizing tool Figure 2-21. Resizing

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Installation Tools — Rod Seals

Many rubber, plastic and PTFE rod
seals can be manipulated by hand for
installation into the seal groove. Small
diameter parts or parts with large cross
sections may require a two piece (split)
groove for installation. Special tooling
can be utilized to help the installation
process; however, PTFE and Polymyte®
seals in particular require caution to ensure
the sealing component is not nicked, dented
or damaged. The following guidelines
provide the steps for proper rod seal Seal normal state Seal folded state
installation. If needed, please call your local
Parker representative for recommendations. Figure 2-22. Rod seal
folding
1. Inspect all hardware and tooling for
any contamination, burrs or sharp
edges. Clean, debur, chamfer or
radius where necessary. Make
sure the bore, groove and rod are
undamaged.

2. If using a two-piece, energized cap

seal, first carefully install the o-ring or
rubber energizer into the groove to
ensure proper seating.

3. By hand, gently fold the seal into a

kidney shape (Figure 2-22) and install
into the groove. For rubber and
polyurethane seals, the use of a three- Figure 2-23. Three-leg installation tool for polyurethane and rubber
prong installation tool can be helpful seals
for folding the seal and installing it into
the groove (Figure 2-23).

4. Unfold the seal into the groove, and

using your finger, feel the inside
diameter of the seal to make sure it is
properly seated. Housing

5. For PTFE seals, after unfolding the

seal in the groove, use a resizing tool
(Figure 2-24) to re-expand the seal. Resizing rod
6. If a back-up ring is to be used with
the rod seal, position the seal toward the Seal
internal side of the groove to allow space for
the back-up ring installation.

Figure 2-24. Rod seal installation

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Finite Element Analysis

Finite Element Analysis (FEA) is a powerful computer
simulation tool that allows engineers to evaluate product
designs and materials and to consider “what if” scenarios
in the development phase. FEA helps minimize time and
cost by optimizing a design early in the process, reducing
pre-production tooling and testing. Within the simulation
program, the product being evaluated is divided into “finite
elements,” and model parameters such as pressure and
seal lip squeeze are defined. The program then repeatedly
solves equilibrium equations for each element, creating
an overall picture of seal deformation, stress and contact
forces (see Figure 2-25). These results can then be linked
to application testing to predict performance.
Figure 2-25.

Precise material characterization is an essential

component of accurately modeling elastomeric
products with FEA. Due to the complex nature of 2500

elastomers, multiple tests must be performed in

order to determine their behavior under stress and
strain. Figure 2-26 shows the typical nonlinear
stress-strain curves for elastomers compared to the
linear property of steel. These nonlinear complexities
Stress (psi)
make performing FEA for elastomers much more
difficult than for metal materials. Advances in 0

material characterization are continually being

made to improve the ability to capture and predict Urethane
thermoviscoelastic effects of elastomers. Rubber

Steel*1000
FEA results must be linked with lab and field testing
to create a baseline to predict seal performance. -2500

Once this baseline is established, design iterations Strain (in/in)

can be performed within FEA until the desired results
Figure 2-26. Stress/Strain relationship of steel vs. elastomers
are achieved and an optimum design is predicted.
This evaluation process enables engineers to
anticipate the performance of new
seal designs by minimizing the time Traditional Procedure Modern Method
and cost associated with prototype (main loop) (side loop)

tooling investments (see Figure Design Design

2-27).
C
Like any computer simulation, C Investigation by FEA H
1 Cutting a Mold
FEA has its limitations. The cost H A
A N
of performing FEA should always N G
2
be justified by its results. FEA can Sample –Production G
Does the Design
E
E
provide relative information on Probably fulfill
The given
leakage performance and wear life, 3 Functional Testing requirements ?

but cannot give concrete answers

to questions like, “Will this seal leak,
and if so, how much?” and “How Requirements?

many cycles can be expected before

1 Cutting a Mold
failure occurs?”
Development successfully finished

Figure 2-27. Traditional process vs. modern seal development process using FEA

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MATERIALS
Table of Contents

Engineers arrive at two predominant selection outcomes when taking into consideration
variables required to design a fluid sealing system — and both selections are integral to
system performance:

• Seal geometry (profile configuration)

• Seal material

Parker’s commitment to offering the highest quality sealing materials is unsurpassed in the
industry. Our expansive portfolio of materials for dynamic sealing includes standard grade,
high
performance, custom, and specialty formulations.

MATERIALS FOR FLUID POWER PRODUCTS

Materials for fluid power products are selected to not only meet application
requirements, but to optimize system performance.
Selection criteria includes:
• T
 ypical physical properties which give a broad picture of a material’s
performance
• C
 hemical compatibility with system fluid
• T
 hermal capabilities and extrusion resistance to meet application require-
ments
• F
 riction and wear resistance for long service life

Resilon® 4300 Polyurethane D-Rings

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MATERIALS
Table of Contents

Typical Physical Properties

Typical physical properties for products are shown in the corresponding tables.

Critical Note: Typical physical property data should be used as a tool for relative comparison of physical and
mechanical properties of Parker materials within a material classification and are not given as specification limits.

Values shown are derived primarily from laboratory tests on material samples of uniform shape and size. Data does not
take into account all variables that may be encountered in actual use such as seal geometry, lip shape, idle storage or
exposure conditions, duration or other aspects of continuous operation, excursion temperatures, etc.

Therefore, it is imperative that the user/purchaser test any seal geometry/material combination being considered
under actual service conditions before specifying. If this is not practical, tests should be devised that simulate service
conditions as closely as possible.

THERMOPLASTICS — ELASTOMERS
Compression
Service Tensile 100%
Parker Material Set Abrasion
Typical Applications Temperature Strength Ultimate Modulus
Material Trade Name Hardness Rebound Rating
and Description Range at Break Elongation psi
Code (Color) at °F Best = 10
°F (°C) psi (MPa) (MPa) Set
(°C)

Thermoplastic Elastomers — TPU, Polyurethanes

P4300A90 Polyurethane Proprietary compound -65 to +275 8500 580% 92A 1750 17% +158 63% 10
Resilon® 4300 offering extended (-54 to +135) (58.6) (12.1) (+70)
temperature range, high
(Tan) rebound. USP Class VI 29% +212
certified. (+100)

P4301A90 Polyurethane For petroleum based fluids. -35 to +275 6800 490% 91A 1850 22% +158 39% 9
(oil) Resilon® 4301 (-37 to +135) (46.9) (12.8) (+70)

(water) (Aqua) For water based fluids. -35 to +225

USP Class VI certified. (-37 to +107)

P4304D60 Polyurethane Offers higher extrusion -65 to +275 7800 530% 60D 3000 36% +158 49% 9
Resilon® 4304 resistance for seals and (-54 to +135) (53.8) (20.7) (+70)
(Brown) anti-extrusion devices.

P4700A90 Polyurethane Enhanced properties over -65 to +200 5900 520% 94A 1600 22% +158 40% 8
4615 to improve sealing (-54 to +93) (40.7) (11.0) (+70)
(Green) capabilities from lower
compression set.

P5065A88 Polyurethane Formulated for an improved -70 to +200 7200 590% 87A 1000 24% +158 58% 7
low temperature range and (-57 to +93) (49.6) (6.9) (+70)
(Dark Blue) higher resilience than 4615,
NSF/ANSI 61 certified.

THERMOPLASTICS — ENGINEERED RESINS

Notched
Service Flexural Flexural Water
Parker Tensile Tensile IZOD Compressive
Material Typical Applications Temperature Strength Modulus Absorption
Material Strength Elongation Impact Strength
(Color) and Description Range psi Kpsi (24 Hr)
Code psi (MPa) (%) Strength psi (MPa)
°F (°C) (MPa) (MPa) %
ft–lbs/in.

Nylons

W4778 Glass-Filled High compressive strength, -65 to +275 29750 2.5 2.9 41550 1900 28500 0.20
Nylon internally lubricated, 40% (-54 to +135) (205) (286) (13100) (196)
glass-filled nylon for tight
(Black) tolerance wear rings

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Table of Contents

MATERIALS

Typical Physical Properties

PTFE
Permanent
Coefficient
Typical Service Tensile Deformation
Parker Thermal of Thermal Abrasion
Material Applications Temperature Strength in Elongation Coefficient Under Load
Material Hardness Conductivity Expansion Rating
Color and Range °F psi at Break % of Friction (70°F
Code (in W/mK) (in/in/°F x 10-5 Best = 10
Description (°C) (bar) 2000 psi
at 203°F)
in %)

Filled PTFE

0102 Pigmented Lower creep, -320 to +450 4600 390 60 D 0.05 - 0.10 0.29 6.1 6.9 3
PTFE reduced (-195 to +233) (317)
permeability
(Turquoise) and good wear
resistance.

0307 Cabon Excellent wear -250 to +575 2250 100 64 D 0.8 - 0.11 0.35 4.4 2.5 5
Graphite resistance and (-157 to +302) (155)
Filled PTFE reduced creep.

(Black)

0401 Bronze Excellent -200 to +575 3200 250 62 D 0.18 - 0.22 0.45 5.6 4.4 5
Filled PTFE extrusion (-129 to +302) (221)
resistance and
(Bronze) high compressive
loads.
62 Shore D.

0502 Carbon Good for strong -200 to +550 3200 150 60 D 0.09 - 0.12 0.31 7.2 1.8 8
Fiber Filled alkali and (-129 to +288) (221)
PTFE hydrofluoric acid.
Good in water
(Brown) service.
60 Shore D.

0627 PPS + Good wear -250 to +550 2500 260 64 D 0.12 - 0.16 0.28 5.2 3.2 6
Graphite- resistence, non- (-157 to +288) (172)
filled PTFE abrasive against
shoft shafts,
(Dark Gray) lower creep.

Note: We emphasize that these tabulations should be used as a guide only.

The above data is based primarily on laboratory and service tests, but does not take into account all variables that can be encountered in actual
use. Therefore, it is always advisable to test the material under actual service conditions before specifying. If this is not practical, tests should
be devised that simulate service conditions as closely as possible.

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Table of Contents

MATERIALS

Chemical Compatibility
It is essential to select seal compounds that are compatible with the environment in which they are used. Even if the proper
seal material is chosen based on system temperature and pressure, exposure to certain fluids can drastically reduce seal
performance by altering a compound’s typical physical properties.

Parker has tested thousands of fluids and is continuously testing many new, popular chemicals to ensure seal material
compatibility. For detailed reports regarding compatiblity of common seal materials and popular test fluids, please contact
your local Parker Engineered Materials Group representative.

Temperature Limits
It is important to understand that temperature ratings for sealing materials are based upon the typical physical
characteristics of the material alone. A material’s suitability for a specific application, however, is dependent on actual use
conditions which take into account wide ranging considerations which include, but aqre not limited to: hardware attributes
and configuration, seal geometry, fluid compatibility, and expected duration and frequency of service exposure at
pressure, temperature, and speed (i.e., continuous, intermittent, excursion). Therefore, it is always advisable to test under
actual service conditions before specifying a material.

THERMAL FACTORS
Heat affects the seal material in several ways:
• Softens the material which accelerates wear
• A
 ccelerates any chemical reaction between the fluid and the seal
• D
 amages the bond structure of the material
• Increases compression set
• H
 igher temperatures for extended periods of time may harden thermoset (rubber) materials.
• A
 s a bearing or wear ring heats up, binding can occur if there is not a gap designed into the wear ring.

Lower end temperature may be as important as the upper end temperature. This is especially true in mobile hydraulics. As
the temperature lowers, the following takes place:
• The seal hardens and is less responsive.
• T
 he coefficient of thermal expansion and contraction is approximately ten times that of metals. Therefore the seal lips
could start to pull away from the surface of the bore. This loss of lip compression against the colder sealing surfaces can
be offset by seal design and proper material selection.

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Storage and Handling

In 1998, the Society of Automotive Engineers (SAE) issued an Aerospace Recommended Practice (ARP) for the storage
of elastomer seals and seal assemblies prior to installation (ARP 5316). The shelf lives listed in ARP 5316 are limited to
materials supplied to various AMS and US Military specifications. At Parker, we have expanded on that list. This has meant
grouping compounds by polymer family and assigning that family a uniform shelf life. The shelf life of each polymer family as
practiced by Parker EPS Division is shown in the Recommended Storage Standards table shown here.

The values in the chart assume that proper guidelines RECOMMENDED STORAGE STANDARDS
for storage conditions are followed. If plastic and rubber
Storage
products are stored improperly, their physical properties Polymer Family
Life
may change. Prior to use, all parts should be checked
for hardness, surface cracking or peeling. If any of these SBR 3 Years
conditions are observed, the parts should be discarded.
Some compounds can exhibit a build-up of powdery film Polyurethane, PU, TPE, TPCE (Polymyte®) 10 Years
on their surface over time. This natural occurrence is
referred to as bloom and does not in any way negatively Nitrile, Neoprene, HNBR, Polyacrylate, Natural
15 Years
impact the function of the seal. Guidelines for proper Rubber, CSM
seal storage are shown below.
Ethylene Propylene, Fluorocarbon, Perfluorinated
Elastomer, Butyl, Silicone, Fluoro-silicone,
Unlimited
Polytetrafluoroethylene (PTFE), Tetrafluoroeth-
ylene Propylene (Aflas®)

SEAL STORAGE and HANDLING GUIDELINES

Records Records should be kept to ensure that stock is rotated such that the first seals in are the first out (FIFO).

Seals must be stored away from heat sources such as direct sunlight and heating appliances. Maximum
storage temperature is +100°F (+38°C). Low temperatures do not typically cause permanent damage to seals,
Temperature but can result in brittleness, making them susceptible to damage if not handled carefully. Ideally, seals should
not be stored at temperatures less than +50°F (+10°C) and should be warmed to room temperature before
installation.

Ultra Violet Seals must be protected from direct sunlight and any artificial light that generates ultra violet radiation.

Care should be taken to ensure seals are always stored in an environment with a relative humidity of less than
Humidity 65%. Polyurethane seals in particular are very susceptible to damage from exposure to moisture and should be

Ozone-generating equipment and oxygen exposure can be detrimental to seal compounds. Seals should be
Oxygen and Ozone stored in air-tight containers. Any electrical equipment that generates a spark should not be used near seal
storage.

Keeping seals free from contamination will assist promote service life. Good housekeeping practices should
Contamination
be maintained.

Large seals should be stored flat when possible and not suspended, which may cause distortion over time.
Distortion
Do not store seals on hooks, nails or pegboard.

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ROD SEALS

Parker rod seal profiles represent the latest in advanced sealing technology for today's
fluid power equipment. The combination of optimized geometry and high performance
material results in highly engineered designs that offer the best possible solution for long
life and improved performance.

ROD SEAL PROFILES

Standard
Material
Pressure
Cross
Profile Description Max* Page
Section

4300

5065
psi

Rod Seal Decision Tree 32

Primary rod seal.

U-cup seal
BT 5000 • 33
with secondary
stabilizing lip

Primary rod seal.

BD O-ring energized 5000 • 38
lip seal

Primary rod seal.

BD with O-ring energized
Back-up 10000 • 42
lip seal with nylon
Ring back-up ring

Compact buffer
BR seal with nylon 10000 • 46
back-up ring

*Max pressure without wear rings. See profile detail page for max pressure when using wear
rings. Consult Fluid Power Seal Design Guide, Catalog EPS 5370.

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Rod Seal Decision Tree

BR +
BR BT
Pressure
Spikes

TP U
PTFE
BT

+
BR BD
Pressure
TP U Spikes

BD BD with
Back-up

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BT Profile
The BT profile is a non-symmetrical design for use in hydraulic rod sealing applications. Using Finite Element Analysis,
the BT profile was designed to provide improved sealing performance and stability in the gland. A knife trimming
process is used to form the beveled lip which is best for removing fluid from the rod. The standard material for the BT
profile is Parker’s proprietary 4300 Resilon® polyurethane.

The BT profile is designed for use as a stand alone rod seal or for use with the BR buffer seal for more critical sealing
applications.

RANGE OF APPLICATION
Standard Material
P4300A90

Temperature Pressure* Speed
-65°F to +275°F 5000 psi < 1.6 ft/s
(-54°C to +135°C) (344 bar) (0.5 m/s)

*Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

BT Cross-Section

• Premium U-cup rod seal

• Beveled sealing lip
• Secondary stabilizing lip in heel
• L ong life, wear-resistant, extrusion
resistant polyurethane
• Low compression set
• Shock load resistance
• Increased sealing performance
at zero pressure BT Installed in Rod Gland

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BT Profile
PART NUMBER NOMENCLATURE
BT Profile — Inch

4 3 0 0 BT 2 5 0 0 2 0 0 0 - 3 7 5

Seal Compound Profile Rod Diameter (x1000) or Seal Nominal Axial Width
4-Digit Material Code Seal Nominal I.D. Example: .375" x 1000 = 375
Example: 5 Digits. Include leading zeros
4300 = 90A Resilon® if needed.
4300 Example: 2.000" x 1000 = 02000

Gland Depth (x1000) or Seal

Nominal Radial Cross-Section
Example: .250" x 1000 = 250

GLAND DIMENSIONS — BT Profile

Please refer to the Engineering Section for surface finish and

additional hardware considerations.

ROD GLAND DIMENSIONS — BT Profile — Inch

Hardware Dimensions
A B C D
Rod Diameter Groove Diameter Groove Width Throat Diameter* Part Number

Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

0.250 +.000/-.001 0.500 +.002/-.000 0.206 0.251 +.002/-.000 4300BT12500250-187
0.312 +.000/-.001 0.562 +.002/-.000 0.206 0.313 +.002/-.000 4300BT12500312-187
0.375 +.000/-.001 0.625 +.002/-.000 0.206 0.376 +.002/-.000 4300BT12500375-187
0.437 +.000/-.001 0.687 +.002/-.000 0.206 0.438 +.002/-.000 4300BT12500437-187
0.500 +.000/-.001 0.750 +.002/-.000 0.206 0.501 +.002/-.000 4300BT12500500-187
0.625 +.000/-.001 0.875 +.002/-.000 0.275 0.626 +.002/-.000 4300BT12500625-250
*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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BT Profile
ROD GLAND DIMENSIONS — BT Profile — Inch (cont'd)
Hardware Dimensions
A B C D
Rod Diameter Groove Diameter Groove Width Throat Diameter* Part Number

Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

0.750 +.000/-.001 1.000 +.002/-.000 0.275 0.751 +.002/-.000 4300BT12500750-250
0.875 +.000/-.001 1.125 +.002/-.000 0.275 0.876 +.002/-.000 4300BT12500875-250
1.000 +.000/-.002 1.375 +.002/-.000 0.343 1.001 +.002/-.000 4300BT18701000-312
1.125 +.000/-.002 1.500 +.002/-.000 0.343 1.126 +.002/-.000 4300BT18701125-312
1.250 +.000/-.002 1.625 +.002/-.000 0.343 1.251 +.002/-.000 4300BT18701250-312
1.375 +.000/-.002 1.750 +.002/-.000 0.343 1.376 +.002/-.000 4300BT18701375-312
1.500 +.000/-.002 1.875 +.002/-.000 0.413 1.501 +.002/-.000 4300BT18701500-375
1.625 +.000/-.002 2.000 +.002/-.000 0.413 1.626 +.002/-.000 4300BT18701625-375
1.750 +.000/-.002 2.125 +.002/-.000 0.413 1.751 +.002/-.000 4300BT18701750-375
1.875 +.000/-.002 2.250 +.002/-.000 0.413 1.876 +.002/-.000 4300BT18701875-375
2.000 +.000/-.002 2.500 +.003/-.000 0.413 2.001 +.003/-.000 4300BT25002000-375
2.125 +.000/-.002 2.625 +.003/-.000 0.413 2.126 +.003/-.000 4300BT25002125-375
2.250 +.000/-.002 2.750 +.003/-.000 0.413 2.251 +.003/-.000 4300BT25002250-375
2.375 +.000/-.002 2.875 +.003/-.000 0.413 2.376 +.003/-.000 4300BT25002375-375
2.500 +.000/-.002 3.000 +.003/-.000 0.413 2.501 +.003/-.000 4300BT25002500-375
2.625 +.000/-.002 3.125 +.003/-.000 0.413 2.626 +.003/-.000 4300BT25002625-375
2.750 +.000/-.002 3.250 +.003/-.000 0.413 2.751 +.003/-.000 4300BT25002750-375
3.000 +.000/-.002 3.500 +.003/-.000 0.413 3.001 +.003/-.000 4300BT25003000-375
3.250 +.000/-.002 3.750 +.003/-.000 0.413 3.251 +.003/-.000 4300BT25003250-375
3.500 +.000/-.002 4.125 +.004/-.000 0.550 3.502 +.003/-.000 4300BT31203500-500
3.750 +.000/-.002 4.375 +.004/-.000 0.550 3.752 +.003/-.000 4300BT31203750-500
4.000 +.000/-.002 4.625 +.004/-.000 0.550 4.002 +.003/-.000 4300BT31204000-500
4.250 +.000/-.002 4.875 +.004/-.000 0.550 4.252 +.003/-.000 4300BT31204250-500
4.500 +.000/-.002 5.125 +.004/-.000 0.550 4.502 +.003/-.000 4300BT31204500-500
4.750 +.000/-.002 5.375 +.004/-.000 0.550 4.752 +.003/-.000 4300BT31204750-500
5.000 +.000/-.002 5.750 +.005/-.000 0.688 5.002 +.004/-.000 4300BT37505000-625
5.500 +.000/-.002 6.250 +.005/-.000 0.688 5.502 +.004/-.000 4300BT37505500-625
6.000 +.000/-.002 6.750 +.005/-.000 0.688 6.002 +.004/-.000 4300BT37506000-625
6.500 +.000/-.002 7.250 +.005/-.000 0.688 6.502 +.004/-.000 4300BT37506500-625
7.000 +.000/-.002 7.750 +.005/-.000 0.688 7.002 +.004/-.000 4300BT37507000-625
7.500 +.000/-.003 8.500 +.007/-.000 0.825 7.502 +.005/-.000 4300BT50007500-750
8.000 +.000/-.003 9.000 +.007/-.000 0.825 8.002 +.005/-.000 4300BT50008000-750
8.500 +.000/-.003 9.500 +.007/-.000 0.825 8.502 +.005/-.000 4300BT50008500-750
9.000 +.000/-.003 10.000 +.007/-.000 0.825 9.002 +.005/-.000 4300BT50009000-750
9.500 +.000/-.003 10.500 +.007/-.000 0.825 9.502 +.005/-.000 4300BT50009500-750
10.000 +.000/-.003 11.000 +.007/-.000 0.825 10.002 +.005/-.000 4300BT50010000-750
*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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BT Metric Profile
PART NUMBER NOMENCLATURE
BT Profile — Metric

M 3 0 0 BT 0 7 . 5 0 7 0 - 1 1 . 4

Profile Rod Diameter (mm) Seal Nominal Axial Width (mm)

Example: 070 = 70 mm Example: 11.4 = 11.4 mm

Seal Compound Gland Depth (mm) or

4-Digit Material Code Seal Nominal Radial
(First digit “4” of 4300 Cross-section
replaced with “M” for Example: 07.5 = 7.5
metric) mm

GLAND DIMENSIONS — BT Metric Profile

Please refer to the Engineering Section for surface finish and additional hardware considerations.

*In the case of designs according to ISO standard, the radii given there should be used.

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BT Metric Profile
GLAND DIMENSIONS and PART NUMBER — BT Metric Profile
A B C D H
Rod Diameter Groove Diameter Groove Width Throat Diameter* Part ISO1 ISO2 Part Number
Height
Dia. Tol. (f7) Dia. Tol. (H9) +.25/-.00 Dia. Tol. (H8)

25 -.02/-.04 35 +.06/-.00 8.0 25.0 +.03/-.00 7.3 • M300BT05.0025-7.3

28 -.02/-.04 36 +.06/-.00 6.3 28.0 +.03/-.00 5.7 • • M300BT04.0028-5.7

32 -.03/-.05 42 +.06/-.00 8.0 32.0 +.03/-.00 7.3 • M300BT05.0032-7.3

36 -.03/-.05 44 +.06/-.00 6.3 36.0 +.04/-.00 5.7 • • M300BT04.0036-5.7

40 -.03/-.05 50 +.06/-.00 8.0 40.0 +.04/-.00 7.3 • M300BT05.0040-7.3

45 -.03/-.05 53 +.07/-.00 6.3 45.0 +.04/-.00 5.6 • • M300BT04.0045-5.6

50 -.03/-.05 60 +.07/-.00 8.0 50.0 +.04/-.00 7.3 • M300BT05.0050-7.3

55 -.03/-.06 65 +.07/-.00 8.0 55.0 +.05/-.00 7.3 M300BT05.0055-7.3

56 -.03/-.06 66 +.07/-.00 7.5 56.0 +.05/-.00 6.5 • • M300BT05.0056-6.5

63 -.03/-.06 78 +.07/-.00 12.5 63.0 +.05/-.00 11.4 • M300BT07.5063-11.4

65 -.03/-.06 80 +.07/-.00 10.0 65.0 +.05/-.00 9.0 M300BT07.5065-9

70 -.03/-.06 85 +.07/-.00 12.5 70.0 +.05/-.00 11.4 • M300BT07.5070-11.4

80 -.03/-.06 95 +.09/-.00 10.0 80.0 +.05/-.00 9.0 M300BT07.5080-9

80 -.03/-.06 95 +.09/-.00 12.5 80.0 +.05/-.00 11.4 • M300BT07.5080-11.4

100 -.04/-.07 120 +.09/-.00 16.0 100.0 +.06/-.00 14.5 • M300BT10.0100-14.5

110 -.04/-.07 125 +.10/-.00 10.6 110.0 +.06/-.00 9.6 • • M300BT07.5110-9.6

125 -.04/-.08 145 +.10/-.00 16.0 125.0 +.06/-.00 14.5 • M300BT10.0125-14.5

140 -.04/-.08 155 +.10/-.00 10.6 140.0 +.06/-.00 9.6 • • M300BT07.5140-9.6

160 -.04/-.08 185 +.12/-.00 20.0 160.0 +.06/-.00 18.2 • M300BT07.5160-18.2

180 -.04/-.08 205 +.12/-.00 20.0 180.0 +.06/-.00 18.2 • M300BT12.5180-18.2

200 -.05/-.10 225 +.12/-.00 20.0 200.0 +.07/-.00 18.2 • M300BT12.5200-18.2

220 -.05/-.10 259 +.12/-.00 25.0 220.0 +.07/-.00 22.7 • M300BT15.0220-22.7

250 -.05/-.10 280 +.13/-.00 25.0 250.0 +.07/-.00 22.7 • M300BT15.0250-22.7

280 -.06/-.11 310 +.13/-.00 25.0 280.0 +.08/-.00 22.7 • M300BT15.0280-22.7

*If used with wear rings, refer to wear ring throat diameter.

1) For housings according to ISO 5597 for ISO6020/II-cylinders.

2) Standard sizes for housings according to ISO 5597/I.

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BD Profile
The BD profile is a non-symmetrical profile rod seal. The O-ring energizer functions as a spring to maintain sealing
contact under low pressure or vacuum applications. The knife trimmed, beveled lip does an excellent job wiping
fluid film. A stabilizing lip is located below the primary sealing lip, just above the base of the seal, to provide
enhanced sealing performance and ensure a tight, stable fit in the gland. The standard material for the BD profile is
Parker’s proprietary
4300 Resilon® polyurethane.

The BD profile is designed to be used as a stand alone rod seal or for use with the BR profile buffer seal for more
critical sealing applications.

RANGE OF APPLICATION
Standard Material

Elastomer Energizer
P4300A90 N, 70A Nitrile

Temperature Pressure* Speed

-65°F to +275°F 5000 psi < 1.6 ft/s
(-54°C to +135°C) (344 bar) (0.5 m/s)

*Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

BD Cross-Section

• Premium O-ring energized lip seal

• E
 xcellent sealing under low/zero
pressure conditions
• Beveled sealing lip
• Rectangular
 cross section and
secondary lip in heel ensure
stability in the gland
• L
 ong life, wear-resistant, extrusion
resistant polyurethane
• Low compression set
• S
 hock load resistant BD Installed in Rod Gland

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ROD SEALS

BD Profile
PART NUMBER NOMENCLATURE
BD Profile — Inch

4 3 0 0 BD 2 5 0 0 2 0 0 0 N 3 7 5

Seal Compound Profile Rod Diameter (x1000) or

4-Digit Material Code Seal Nominal I.D.
Example: 5 Digits. Include leading zeros
4300 = 90A Resilon® 4300 if needed.
Example: 2.000" x 1000 = 02000

Energizer Material Code

Example:
Gland Depth (x1000) or Seal N = 70A Nitrile O-ring
Nominal Radial Cross-Section
Example: .250" x 1000 = 250

Seal Nominal Axial Width

Example: .375" x 1000 = 375

GLAND DIMENSIONS — BD Profile

Please refer to the Engineering Section

for surface finish and additional hardware considerations.

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BD Profile
ROD GLAND DIMENSIONS — BD Profile — Inch
Hardware Dimensions

A B C D Part Number
Rod Diameter Groove Diameter Groove Width Throat Diameter*

Dia. Tol. Dia. Tol. +.015.-.000 Dia. Tol.

0.250 +.000/-.001 0.500 +.002/-.000 0.206 0.251 +.002/-.000 4300BD12500250N187
0.312 +.000/-.001 0.562 +.002/-.000 0.206 0.313 +.002/-.000 4300BD12500312N187
0.375 +.000/-.001 0.625 +.002/-.000 0.206 0.376 +.002/-.000 4300BD12500375N187
0.437 +.000/-.001 0.687 +.002/-.000 0.206 0.438 +.002/-.000 4300BD12500437N187
0.500 +.000/-.001 0.750 +.002/-.000 0.206 0.501 +.002/-.000 4300BD12500500N187
0.625 +.000/-.001 0.875 +.002/-.000 0.275 0.626 +.002/-.000 4300BD12500625N250
0.750 +.000/-.001 1.000 +.002/-.000 0.275 0.751 +.002/-.000 4300BD12500750N250
0.875 +.000/-.001 1.125 +.002/-.000 0.275 0.876 +.002/-.000 4300BD12500875N250
1.000 +.000/-.002 1.375 +.002/-.000 0.343 1.001 +.002/-.000 4300BD18701000N312
1.125 +.000/-.002 1.500 +.002/-.000 0.343 1.126 +.002/-.000 4300BD18701125N312
1.250 +.000/-.002 1.625 +.002/-.000 0.343 1.251 +.002/-.000 4300BD18701250N312
1.375 +.000/-.002 1.750 +.002/-.000 0.343 1.376 +.002/-.000 4300BD18701375N312
1.500 +.000/-.002 1.875 +.002/-.000 0.413 1.501 +.002/-.000 4300BD18701500N375
1.625 +.000/-.002 2.000 +.002/-.000 0.413 1.626 +.002/-.000 4300BD18701625N375
1.750 +.000/-.002 2.125 +.002/-.000 0.413 1.751 +.002/-.000 4300BD18701750N375
1.875 +.000/-.002 2.250 +.002/-.000 0.413 1.876 +.002/-.000 4300BD18701875N375
2.000 +.000/-.002 2.500 +.003/-.000 0.413 2.001 +.003/-.000 4300BD25002000N375
2.125 +.000/-.002 2.625 +.003/-.000 0.413 2.126 +.003/-.000 4300BD25002125N375
2.250 +.000/-.002 2.750 +.003/-.000 0.413 2.251 +.003/-.000 4300BD25002250N375
2.375 +.000/-.002 2.875 +.003/-.000 0.413 2.376 +.003/-.000 4300BD25002375N375
2.500 +.000/-.002 3.000 +.003/-.000 0.413 2.501 +.003/-.000 4300BD25002500N375
2.625 +.000/-.002 3.125 +.003/-.000 0.413 2.626 +.003/-.000 4300BD25002625N375
2.750 +.000/-.002 3.250 +.003/-.000 0.413 2.751 +.003/-.000 4300BD25002750N375
3.000 +.000/-.002 3.500 +.003/-.000 0.413 3.001 +.003/-.000 4300BD25003000N375
3.250 +.000/-.002 3.750 +.003/-.000 0.413 3.251 +.003/-.000 4300BD25003250N375
3.500 +.000/-.002 4.125 +.004/-.000 0.550 3.502 +.003/-.000 4300BD31203500N500
3.750 +.000/-.002 4.375 +.004/-.000 0.550 3.752 +.003/-.000 4300BD31203750N500
4.000 +.000/-.002 4.625 +.004/-.000 0.550 4.002 +.003/-.000 4300BD31204000N500
4.250 +.000/-.002 4.875 +.004/-.000 0.550 4.252 +.003/-.000 4300BD31204250N500
4.500 +.000/-.002 5.125 +.004/-.000 0.550 4.502 +.003/-.000 4300BD31204500N500
4.750 +.000/-.002 5.375 +.004/-.000 0.550 4.752 +.003/-.000 4300BD31204750N500
5.000 +.000/-.002 5.750 +.005/-.000 0.688 5.002 +.004/-.000 4300BD37505000N625

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be
considered. Consult your Parker representative for assistance.

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BD Profile
ROD GLAND DIMENSIONS — BD Profile — Inch (cont'd)
Hardware Dimensions

A B C D Part Number
Rod Diameter Groove Diameter Groove Width Throat Diameter*

Dia. Tol. Dia. Tol. +.015.-.000 Dia. Tol.

5.500 +.000/-.002 6.250 +.005/-.000 0.688 5.502 +.004/-.000 4300BD37505500N625
6.000 +.000/-.002 6.750 +.005/-.000 0.688 6.002 +.004/-.000 4300BD37506000N625
6.500 +.000/-.002 7.250 +.005/-.000 0.688 6.502 +.004/-.000 4300BD37506500N625
7.000 +.000/-.002 7.750 +.005/-.000 0.688 7.002 +.004/-.000 4300BD37507000N625
7.500 +.000/-.003 8.500 +.007/-.000 0.825 7.502 +.005/-.000 4300BD50007500N750
8.000 +.000/-.003 9.000 +.007/-.000 0.825 8.002 +.005/-.000 4300BD50008000N750
8.500 +.000/-.003 9.500 +.007/-.000 0.825 8.502 +.005/-.000 4300BD50008500N750
9.000 +.000/-.003 10.000 +.007/-.000 0.825 9.002 +.005/-.000 4300BD50009000N750
9.500 +.000/-.003 10.500 +.007/-.000 0.825 9.502 +.005/-.000 4300BD50009500N750
10.000 +.000/-.003 11.000 +.007/-.000 0.825 10.002 +.005/-.000 4300BD50010000N750

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be
considered. Consult your Parker representative for assistance.

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TION ALOG

BD with Back-up Profile

For enhanced extrusion protection, Parker offers the BD profile with a positively actuated back-up ring located in
the heel. The O-ring energizer functions as a spring to maintain sealing contact under low pressure or vacuum
applications. The knife trimmed, beveled lip does an excellent job wiping fluid film. A stabilizing lip is located below
the primary sealing lip, just above the base of the seal, to provide enhanced sealing performance and ensure a
tight, stable fit in the gland.
The standard material for the BD with back-up profile is Parker’s P5065 polyurethane and W4655 Moly filled Nylon
back-up ring.

The BD profile is designed to be used as a stand alone rod seal or for use with the BR profile buffer seal for more
critical sealing applications.

RANGE OF APPLICATION
Standard Material

Elastomer Back-up Energizer

P5065A88 W4655 Y, Low Temp Nitrile

Temperature Pressure* Speed

-65°F to +200°F 10000 psi < 1.6 ft/s
(-54°C to +93°C) (688 bar) (0.5 m/s)

*Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

BD with Back-up
Cross-Section

• O-ring energized lip seal

• E
 xcellent sealing under low/zero
pressure conditions
• Beveled sealing lip
• Rectangular
 cross section and
secondary lip in heel ensure
stability in the gland
• Positively
 actuated back-up ring
enhances extrusion resistance
• P5065 Low temp polyurethane BD Installed in Rod Gland

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BD with Back-up Profile

PART NUMBER NOMENCLATURE
BD with Back-up Profile — Inch

5 0 6 5 BD 2 5 0 0 2 0 0 0 R 1 Y 3 7 5

Seal Compound Profile Rod Diameter (x1000)

4-Digit Material Code or Seal Nominal I.D.
Example: 5 Digits. Include leading
5065 = 88A Polyurethane zeros if needed.
Example:
2.000" x 1000 = 02000

Gland Depth (x1000) or Seal Nominal Positively Actuated

Radial Cross-Section Back-up Ring Material,
Example: .250" x 1000 = 250 R1 = W4655

Energizer Material Code

Example: Y = Low-Temp Nitrile O-ring

Seal Nominal Axial Width

Example: .375" x 1000 = 375

GLAND DIMENSIONS — BD with Back-up Profile

Please refer to the Engineering Section

for surface finish and additional hardware considerations.

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BD with Back-up Profile

GLAND DIMENSIONS — BD with Back-up Profile — Inch
Hardware Dimensions

A B C D Part Number
Rod Diameter Groove Diameter Groove Width Throat Diameter*

Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

0.250 +.000/-.001 0.500 +.002/-.000 0.206 0.251 +.002/-.000 5065BD12500250R1Y187
0.312 +.000/-.001 0.562 +.002/-.000 0.206 0.313 +.002/-.000 5065BD12500312R1Y187
0.375 +.000/-.001 0.625 +.002/-.000 0.206 0.376 +.002/-.000 5065BD12500375R1Y187
0.437 +.000/-.001 0.687 +.002/-.000 0.206 0.438 +.002/-.000 5065BD12500437R1Y187
0.500 +.000/-.001 0.750 +.002/-.000 0.206 0.501 +.002/-.000 5065BD12500500R1Y187
0.625 +.000/-.001 0.875 +.002/-.000 0.275 0.626 +.002/-.000 5065BD12500625R1Y250
0.750 +.000/-.001 1.000 +.002/-.000 0.275 0.751 +.002/-.000 5065BD12500750R1Y250
0.875 +.000/-.001 1.125 +.002/-.000 0.275 0.876 +.002/-.000 5065BD12500875R1Y250
1.000 +.000/-.002 1.375 +.002/-.000 0.343 1.001 +.002/-.000 5065BD18701000R1Y312
1.125 +.000/-.002 1.500 +.002/-.000 0.343 1.126 +.002/-.000 5065BD18701125R1Y312
1.250 +.000/-.002 1.625 +.002/-.000 0.343 1.251 +.002/-.000 5065BD18701250R1Y312
1.375 +.000/-.002 1.750 +.002/-.000 0.343 1.376 +.002/-.000 5065BD18701375R1Y312
1.500 +.000/-.002 1.875 +.002/-.000 0.413 1.501 +.002/-.000 5065BD18701500R1Y375
1.625 +.000/-.002 2.000 +.002/-.000 0.413 1.626 +.002/-.000 5065BD18701625R1Y375
1.750 +.000/-.002 2.125 +.002/-.000 0.413 1.751 +.002/-.000 5065BD18701750R1Y375
1.875 +.000/-.002 2.250 +.002/-.000 0.413 1.876 +.002/-.000 5065BD18701875R1Y375
2.000 +.000/-.002 2.500 +.003/-.000 0.413 2.001 +.003/-.000 5065BD25002000R1Y375
2.125 +.000/-.002 2.625 +.003/-.000 0.413 2.126 +.003/-.000 5065BD25002125R1Y375
2.250 +.000/-.002 2.750 +.003/-.000 0.413 2.251 +.003/-.000 5065BD25002250R1Y375
2.375 +.000/-.002 2.875 +.003/-.000 0.413 2.376 +.003/-.000 5065BD25002375R1Y375
2.500 +.000/-.002 3.000 +.003/-.000 0.413 2.501 +.003/-.000 5065BD25002500R1Y375
2.625 +.000/-.002 3.125 +.003/-.000 0.413 2.626 +.003/-.000 5065BD25002625R1Y375
2.750 +.000/-.002 3.250 +.003/-.000 0.413 2.751 +.003/-.000 5065BD25002750R1Y375
3.000 +.000/-.002 3.500 +.003/-.000 0.413 3.001 +.003/-.000 5065BD25003000R1Y375
3.250 +.000/-.002 3.750 +.003/-.000 0.413 3.251 +.003/-.000 5065BD25003250R1Y375
3.500 +.000/-.002 4.125 +.004/-.000 0.550 3.502 +.003/-.000 5065BD31203500R1Y500
3.750 +.000/-.002 4.375 +.004/-.000 0.550 3.752 +.003/-.000 5065BD31203750R1Y500
4.000 +.000/-.002 4.625 +.004/-.000 0.550 4.002 +.003/-.000 5065BD31204000R1Y500
4.250 +.000/-.002 4.875 +.004/-.000 0.550 4.252 +.003/-.000 5065BD31204250R1Y500
4.500 +.000/-.002 5.125 +.004/-.000 0.550 4.502 +.003/-.000 5065BD31204500R1Y500
4.750 +.000/-.002 5.375 +.004/-.000 0.550 4.752 +.003/-.000 5065BD31204750R1Y500
5.000 +.000/-.002 5.750 +.005/-.000 0.688 5.002 +.004/-.000 5065BD37505000R1Y625

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance

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ALOG TION

BD with Back-up Profile

GLAND DIMENSIONS — BD with Back-up Profile — Inch (cont’d)
Hardware Dimensions

A B C D Part Number
Rod Diameter Groove Diameter Groove Width Throat Diameter*

Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

5.500 +.000/-.002 6.250 +.005/-.000 0.688 5.502 +.004/-.000 5065BD37505500R1Y625
6.000 +.000/-.002 6.750 +.005/-.000 0.688 6.002 +.004/-.000 5065BD37506000R1Y625
6.500 +.000/-.002 7.250 +.005/-.000 0.688 6.502 +.004/-.000 5065BD37506500R1Y625
7.000 +.000/-.002 7.750 +.005/-.000 0.688 7.002 +.004/-.000 5065BD37507000R1Y625
7.500 +.000/-.003 8.500 +.007/-.000 0.825 7.502 +.005/-.000 5065BD50007500R1Y750
8.000 +.000/-.003 9.000 +.007/-.000 0.825 8.002 +.005/-.000 5065BD50008000R1Y750
8.500 +.000/-.003 9.500 +.007/-.000 0.825 8.502 +.005/-.000 5065BD50008500R1Y750
9.000 +.000/-.003 10.000 +.007/-.000 0.825 9.002 +.005/-.000 5065BD50009000R1Y750
9.500 +.000/-.003 10.500 +.007/-.000 0.825 9.502 +.005/-.000 5065BD50009500R1Y750
10.000 +.000/-.003 11.000 +.007/-.000 0.825 10.002 +.005/-.000 5065BD50010000R1Y750

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance

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TION ALOG

BR Profile
The BR profile is a compact rod seal designed to act as a buffer seal for the primary rod seal. As a buffer seal,
the BR profile provides the majority of the rod sealing performance. Any fluid located between the BR profile and
the rod seal will relieve back into the cylinder by flowing past the BR profile’s flexible static side lip and slotted
pedestals. This relieving, or check valve function, allows the BR profile and primary rod seal to work as a sealing
system without danger of developing a pressure trap. As a sealing system, the BR profile and primary rod seal
provide optimal performance in the most difficult applications. The standard material for the BR profile is Parker’s
P4300 polyurethane and W4655 Moly-filled Nylon back-up ring.

RANGE OF APPLICATION
Standard Material
Positively Actuated
Elastomer Back-up
P4300A90 W4655

Temperature Pressure* Speed

-65°F to +275°F 10000 psi < 1.6 ft/s
(-54°C to +135°C) (688 bar) (0.5 m/s)

*Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

BR Profile Cross-Section

• L ong-wearing, buffer seal with

back-up
• Premium Resilon® polyurethane
• Extrusion resistant nylon back-up ring
• Flexible
 static side lip regulates
pressure between buffer ring and
rod seall
• Slotted
 pedestals allow checkvalve-
type fluid movement
• When used in combination with
primary rod seal, functions as
pressure spike suppressor BR Installed in Rod Gland

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ALOG TION

BR Profile
PART NUMBER NOMENCLATURE
BR Profile — Inch

4 3 0 0 BR 2 5 0 0 2 0 0 0 - 2 5 0 A

Seal Compound Profile Rod Diameter (x1000) or

4-Digit Material Code Seal Nominal I.D.
Example: 5 Digits. Include leading zeros
4300 = 90A Resilon® 4300 if needed.
Example: 2.000" x 1000 = 02000
Seal Nominal Axial Width
Example: .2500" x 1000 = 250

Gland Depth (x1000) or Seal

Nominal Radial Cross-Section
Example: .250" x 1000 = 250
Positively Actuated
Back-up Ring Material,
A = W4655

GLAND DIMENSIONS — BR Profile

Please refer to the Engineering Section for surface finish and

additional hardware considerations.

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TION ALOG

BR Profile
GLAND DIMENSIONS — BR Profile — Inch
Hardware Dimensions

A B C D
Rod Diameter Groove Diameter Groove Throat Diameter* Part Number
Width
Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

0.250 +.000/-.001 0.500 +.002/-.000 0.138 0.251 +.002/-.000 4300BR12500250-125A

0.312 +.000/-.001 0.562 +.002/-.000 0.138 0.313 +.002/-.000 4300BR12500312-125A

0.375 +.000/-.001 0.625 +.002/-.000 0.138 0.376 +.002/-.000 4300BR12500375-125A

0.437 +.000/-.001 0.687 +.002/-.000 0.138 0.438 +.002/-.000 4300BR12500437-125A

0.500 +.000/-.001 0.750 +.002/-.000 0.138 0.501 +.002/-.000 4300BR12500500-125A

0.625 +.000/-.001 0.875 +.002/-.000 0.138 0.626 +.002/-.000 4300BR12500625-125A

0.750 +.000/-.001 1.000 +.002/-.000 0.138 0.751 +.002/-.000 4300BR12500750-125A

0.875 +.000/-.001 1.125 +.002/-.000 0.138 0.876 +.002/-.000 4300BR12500875-125A

1.000 +.000/-.002 1.375 +.002/-.000 0.206 1.001 +.002/-.000 4300BR18701000-187A

1.125 +.000/-.002 1.500 +.002/-.000 0.206 1.126 +.002/-.000 4300BR18701125-187A

1.250 +.000/-.002 1.625 +.002/-.000 0.206 1.251 +.002/-.000 4300BR18701250-187A

1.375 +.000/-.002 1.750 +.002/-.000 0.206 1.376 +.002/-.000 4300BR18701375-187A

1.500 +.000/-.002 1.875 +.002/-.000 0.206 1.501 +.002/-.000 4300BR18701500-187A

1.625 +.000/-.002 2.000 +.002/-.000 0.206 1.626 +.002/-.000 4300BR18701625-187A

1.750 +.000/-.002 2.125 +.002/-.000 0.206 1.751 +.002/-.000 4300BR18701750-187A

1.875 +.000/-.002 2.250 +.002/-.000 0.206 1.876 +.002/-.000 4300BR18701875-187A

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance

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ALOG TION

BR Profile
GLAND DIMENSIONS — BR Profile — Inch (cont’d)
Hardware Dimensions

A B C D
Rod Diameter Groove Diameter Groove Throat Diameter* Part Number
Width
Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

2.000 +.000/-.002 2.500 +.003/-.000 0.275 2.001 +.003/-.000 4300BR25002000-250A

2.125 +.000/-.002 2.625 +.003/-.000 0.275 2.126 +.003/-.000 4300BR25002125-250A

2.250 +.000/-.002 2.750 +.003/-.000 0.275 2.251 +.003/-.000 4300BR25002250-250A

2.375 +.000/-.002 2.875 +.003/-.000 0.275 2.376 +.003/-.000 4300BR25002375-250A

2.500 +.000/-.002 3.000 +.003/-.000 0.275 2.501 +.003/-.000 4300BR25002500-250A

2.625 +.000/-.002 3.125 +.003/-.000 0.275 2.626 +.003/-.000 4300BR25002625-250A

2.750 +.000/-.002 3.250 +.003/-.000 0.275 2.751 +.003/-.000 4300BR25002750-250A

3.000 +.000/-.002 3.500 +.003/-.000 0.275 3.001 +.003/-.000 4300BR25003000-250A

3.250 +.000/-.002 3.750 +.003/-.000 0.275 3.251 +.003/-.000 4300BR25003250-250A

3.500 +.000/-.002 4.125 +.004/-.000 0.343 3.502 +.003/-.000 4300BR31203500-312A

3.750 +.000/-.002 4.375 +.004/-.000 0.343 3.752 +.003/-.000 4300BR31203750-312A

4.000 +.000/-.002 4.625 +.004/-.000 0.343 4.002 +.003/-.000 4300BR31204000-312A

4.250 +.000/-.002 4.875 +.004/-.000 0.343 4.252 +.003/-.000 4300BR31204250-312A

4.500 +.000/-.002 5.125 +.004/-.000 0.343 4.502 +.003/-.000 4300BR31204500-312A

4.750 +.000/-.002 5.375 +.004/-.000 0.343 4.752 +.003/-.000 4300BR31204750-312A

5.000 +.000/-.002 5.750 +.005/-.000 0.413 5.002 +.004/-.000 4300BR37505000-375A

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance

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BR Profile
GLAND DIMENSIONS — BR Profile — Inch (cont’d)
Hardware Dimensions

A B C D
Rod Diameter Groove Diameter Groove Throat Diameter* Part Number
Width
Dia. Tol. Dia. Tol. +.015/-.000 Dia. Tol.

5.500 +.000/-.002 6.250 +.005/-.000 0.413 5.502 +.004/-.000 4300BR37505500-375A

6.000 +.000/-.002 6.750 +.005/-.000 0.413 6.002 +.004/-.000 4300BR37506000-375A

6.500 +.000/-.002 7.250 +.005/-.000 0.413 6.502 +.004/-.000 4300BR37506500-375A

7.000 +.000/-.002 7.750 +.005/-.000 0.413 7.002 +.004/-.000 4300BR37507000-375A

7.500 +.000/-.003 8.500 +.007/-.000 0.550 7.502 +.005/-.000 4300BR50007500-500A

8.000 +.000/-.003 9.000 +.007/-.000 0.550 8.002 +.005/-.000 4300BR50008000-500A

8.500 +.000/-.003 9.500 +.007/-.000 0.550 8.502 +.005/-.000 4300BR50008500-500A

9.000 +.000/-.003 10.000 +.007/-.000 0.550 9.002 +.005/-.000 4300BR50009000-500A

9.500 +.000/-.003 10.500 +.007/-.000 0.550 9.502 +.005/-.000 4300BR50009500-500A

10.000 +.000/-.003 11.000 +.007/-.000 0.550 10.002 +.005/-.000 4300BR50010000-500A

*If used with wear rings, refer to wear ring throat diameter.
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance

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PISTON SEALS

Parker piston seal profiles represent the latest in advanced sealing technology
for today’s fluid power equipment. The combination of optimized geometry and high
performance material results in highly engineered designs that offer the best possible
solution for long life and improved performance.

PISTON SEAL PROFILES

Standard
Material
Pressure
Cross
Profile Description Max* Page

4304
Section

0401
psi

Piston Seal Decision Tree 34

Premium TPU
BP 7000 • 35
cap piston seal

Premium PTFE
cap piston seal
CT 10000 • 38
with Nylon
back-up rings

Compact PTFE
OE 5000 • 42
cap piston seal

*Max pressure without wear rings. See profile detail page for max pressure when using wear rings.

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Piston Seal Decision Tree

CT

SHOCK
LOADS

BI-DIRECTIONAL
PRESSURE

BP
O-RING
GROOVE?

OE

PTFE-EXTREME TEMPERATURE
OR FLUID

FBC

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BP Profile
Parker’s BP profile is a squeeze type, bi-directional piston seal for use in medium to heavy duty hydraulic applications.
This premium polyurethane cap seal is primarily designed for linear applications but has been successfully used as
a low speed rotary seal. The standard material for this profile is Resilon® 4304 polyurethane, offering higher wear
resistance, extrusion resistance, and extended temperature range. The Resilon® 4304 cap is energized using a
resilient nitrile elastomer offering low compression set. The BP profile’s geometry provides a fluid reservoir between
the two sealing lips which holds system fluid, resulting in reduced breakaway and running friction. Standard BP profile
is designed to retrofit industrial reciprocating O-ring grooves. The BP profile is easy to install and will resist rolling and
twisting in long stroke applications.

Sold only as an assembly (seal and energizer).

RANGE OF APPLICATION
Standard Material*

Cap Energizer
P4304D60 A, 70A Nitrile

Temperature Pressure* Speed

-65°F to +275°F 7000 psi < 1.6 ft/s
(-54°C to +135°C) (482 bar) (0.5 m/s)

*Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

BP Cross-Section

• Premium Resilon® 4304

polyurethane cap material
• Extended life, wear-resistant,
extrusion resistant polyurethane
• Positive sealing points with
lubrication pocket
• Non-drift seal performance with
lower friction than dual seals
• Low compression set
• Easy to Install
• Retrofits O-ring grooves BP Installed in Piston Gland
• Resists rolling and twisting over
long strokes

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BP Profile
PART NUMBER NOMENCLATURE
BP Profile — Inch

4 3 0 4 BP 3 3 4 A

Profile Bore Diameter

Identifier
(O-ring
Seal Compound
Dash Number*)
4-Digit Material Code
Example:
Example:
334 = 3.000"
4304 = 60D Resilon® 4304
Energizer
Material Code
A = 70A Nitrile

GLAND DIMENSIONS — BP Profile

Please refer to the Engineering Section

for surface finish and additional hardware considerations.

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PISTON SEALS

BP Profile
PISTON GLAND DIMENSIONS — BP Profile — Inch
Hardware Dimensions

A B C D Part Number
Bore Diameter Groove Diameter Groove Width Piston Diameter*

Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol.

1.500 +.002/-.000/ 1.258 +.000/-.002 0.187 1.497 +.000/-.001 4304BP218A
1.625 +.002/-.000/ 1.383 +.000/-.002 0.187 1.622 +.000/-.001 4304BP220A
1.750 +.002/-.000/ 1.508 +.000/-.002 0.187 1.747 +.000/-.001 4304BP222A
2.000 +.002/-.000/ 1.630 +.000/-.002 0.281 1.997 +.000/-.001 4304BP326A
2.250 +.002/-.000/ 1.880 +.000/-.002 0.281 2.247 +.000/-.001 4304BP328A
2.500 +.002/-.000/ 2.130 +.000/-.002 0.281 2.497 +.000/-.001 4304BP330A
2.750 +.002/-.000/ 2.380 +.000/-.002 0.281 2.747 +.000/-.001 4304BP332A
3.000 +.002/-.000/ 2.630 +.000/-.002 0.281 2.997 +.000/-.001 4304BP334A
3.250 +.002/-.000/ 2.880 +.000/-.002 0.281 3.247 +.000/-.001 4304BP336A
3.500 +.002/-.000/ 3.130 +.000/-.002 0.281 3.497 +.000/-.001 4304BP338A
3.750 +.002/-.000/ 3.380 +.000/-.002 0.281 3.747 +.000/-.001 4304BP340A
4.000 +.002/-.000/ 3.630 +.000/-.002 0.281 3.997 +.000/-.001 4304BP342A
4.250 +.002/-.000/ 3.880 +.000/-.002 0.281 4.247 +.000/-.001 4304BP344A
4.500 +.002/-.000/ 4.130 +.000/-.002 0.281 4.497 +.000/-.001 4304BP346A
4.750 +.002/-.000/ 4.380 +.000/-.002 0.281 4.747 +.000/-.001 4304BP348A
5.000 +.002/-.000/ 4.630 +.000/-.002 0.281 4.997 +.000/-.001 4304BP350A
5.252 +.002/-.000/ 4.778 +.000/-.002 0.375 5.248 +.000/-.001 4304BP427A
5.502 +.002/-.000/ 5.028 +.000/-.002 0.375 5.498 +.000/-.001 4304BP429A
5.752 +.002/-.000/ 5.278 +.000/-.002 0.375 5.748 +.000/-.001 4304BP431A
6.002 +.002/-.000/ 5.528 +.000/-.002 0.375 5.998 +.000/-.001 4304BP433A
6.502 +.002/-.000/ 6.028 +.000/-.002 0.375 6.498 +.000/-.001 4304BP437A
7.002 +.002/-.000/ 6.528 +.000/-.002 0.375 6.998 +.000/-.001 4304BP439A
7.502 +.002/-.000/ 7.028 +.000/-.002 0.375 7.498 +.000/-.001 4304BP441A
8.002 +.002/-.000/ 7.528 +.000/-.002 0.375 7.998 +.000/-.001 4304BP443A

*If used with wear rings, refer to wear ring piston diameter.
Above table reflects recommended cross-sections for bore diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 55

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TION ALOG

CT Profile
The Parker CT profile is a robust design for heavy duty hydraulic applications and is an excellent choice for sealing
mobile hydraulic applications that experience shock loads. This four piece profile is an assembly comprised of a
rubber energizer, PTFE cap and two back-up rings. In application, fluid pressure forces the rubber energizer to apply
increased load against the PTFE cap and back-up rings. This results in increased sealing force against the bore and
allows the back-up rings to close off the extrusion gap between the piston and the bore. Once activated by pressure,
the back-up rings protect the seal from extruding and keep internal contamination away from the PTFE cap. Parker’s
CT profile will retrofit non-Parker seals of similar design.

The CT Profile is sold only as an assembly.

RANGE OF APPLICATION
Standard Material

Cap Energizer Back-up Rings

0401 40% bronze- A, 70A Nitrile A, Moly-filled Nylon
filled PTFE

Temperature*
Pressure** Speed
-30°F to +250°F
10000 psi < 5 ft/s
(-34°C to +121°C)
(688 bar) (1.5 m/s)


*The temperature range of the CT profile is limited to the thermal capability of the energizer.
A wider temperature range can be achieved by using alternate energizer and back-up ring
compounds.

**Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section in Catalog EPS 5370.

CT Cross-Section

•  eals to 10000 psi (688 bar)

S
• Extrusion resistant
• Resists shock load failure
• Low breakaway force
• Dynamic, smooth motion
• No-drift seal performance

CT installed in Piston
Gland

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CT Profile
PART NUMBER NOMENCLATURE
CT Profile — Inch

0 4 0 1 CT 3 6 4 0 5 0 0 0 - 7 5 0 A A

Profile Gland Depth (x1000) Groove Width (x1000)

Example: Example:
.364" x 1000 = 364 .750" x 1000 = 750

Seal Compound Bore Diameter (x1000) Energizer Material

4-Digit Material Code 5 Digits. Include leading Code
Example: zeros if needed. A = 70A Nitrile
0401 = 40% Bronze-filled PTFE Example:
5.000" x 1000 = 05000
Back-up Ring Material
Example:
A = Moly-filled Nylon

GLAND DIMENSIONS — CT Profile

Please refer to the Engineering Section for surface finish and

additional hardware considerations.

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CT Profile
PISTON GLAND DIMENSIONS (Standard Style) — CT Profile — Inch
A B C D
Bore Diameter Groove Diameter Groove Width Piston Diameter* Part Number
(Standard Style)
Dia. Tol. Dia. Tol. +.010/-.000 Dia. Tol.
1.000 +.002/-.000 0.628 +.000/-.002 0.424 0.999 +.000/-.002 0401CT18601000-424AA
1.063 +.002/-.000 0.691 +.000/-.002 0.424 1.062 +.000/-.002 0401CT18601063-424AA
1.125 +.002/-.000 0.753 +.000/-.002 0.424 1.124 +.000/-.002 0401CT18601125-424AA
1.188 +.002/-.000 0.816 +.000/-.002 0.424 1.187 +.000/-.002 0401CT18601188-424AA
1.250 +.002/-.000 0.878 +.000/-.002 0.424 1.249 +.000/-.002 0401CT18601250-424AA
1.313 +.002/-.000 0.941 +.000/-.002 0.424 1.312 +.000/-.002 0401CT18601313-424AA
1.375 +.002/-.000 1.003 +.000/-.002 0.424 1.374 +.000/-.002 0401CT18601375-424AA
1.438 +.002/-.000 1.066 +.000/-.002 0.424 1.437 +.000/-.002 0401CT18601438-424AA
1.500 +.002/-.000 1.128 +.000/-.002 0.424 1.499 +.000/-.002 0401CT18601500-424AA
1.563 +.002/-.000 1.191 +.000/-.002 0.424 1.562 +.000/-.002 0401CT18601563-424AA
1.625 +.002/-.000 1.253 +.000/-.002 0.424 1.624 +.000/-.002 0401CT18601625-424AA
1.688 +.002/-.000 1.316 +.000/-.002 0.424 1.687 +.000/-.002 0401CT18601688-424AA
1.750 +.002/-.000 1.378 +.000/-.002 0.424 1.749 +.000/-.002 0401CT18601750-424AA
1.875 +.002/-.000 1.503 +.000/-.002 0.424 1.874 +.000/-.002 0401CT18601875-424AA
2.000 +.003/-.000 1.628 +.000/-.003 0.424 1.999 +.000/-.003 0401CT18602000-424AA
2.125 +.003/-.000 1.753 +.000/-.003 0.424 2.124 +.000/-.003 0401CT18602125-424AA
2.250 +.003/-.000 1.878 +.000/-.003 0.424 2.249 +.000/-.003 0401CT18602250-424AA
2.375 +.003/-.000 2.003 +.000/-.003 0.424 2.374 +.000/-.003 0401CT18602375-424AA
2.500 +.003/-.000 2.128 +.000/-.003 0.424 2.499 +.000/-.003 0401CT18602500-424AA
2.625 +.003/-.000 2.253 +.000/-.003 0.424 2.624 +.000/-.003 0401CT18602625-424AA
2.750 +.003/-.000 2.378 +.000/-.003 0.424 2.749 +.000/-.003 0401CT18602750-424AA
2.875 +.003/-.000 2.503 +.000/-.003 0.424 2.874 +.000/-.003 0401CT18602875-424AA
3.000 +.004/-.000 2.522 +.000/-.003 0.579 2.998 +.000/-.003 0401CT23903000-579AA
3.125 +.004/-.000 2.647 +.000/-.003 0.579 3.123 +.000/-.003 0401CT23903125-579AA
3.250 +.004/-.000 2.772 +.000/-.003 0.579 3.248 +.000/-.003 0401CT23903250-579AA
3.375 +.004/-.000 2.897 +.000/-.003 0.579 3.373 +.000/-.003 0401CT23903375-579AA
3.500 +.004/-.000 3.022 +.000/-.003 0.579 3.498 +.000/-.003 0401CT23903500-579AA
3.625 +.004/-.000 3.147 +.000/-.003 0.579 3.623 +.000/-.003 0401CT23903625-579AA
3.750 +.004/-.000 3.272 +.000/-.003 0.579 3.748 +.000/-.003 0401CT23903750-579AA
3.875 +.004/-.000 3.397 +.000/-.003 0.579 3.873 +.000/-.003 0401CT23903875-579AA
4.000 +.004/-.000 3.522 +.000/-.003 0.579 3.998 +.000/-.003 0401CT23904000-579AA
4.125 +.004/-.000 3.647 +.000/-.003 0.579 4.123 +.000/-.003 0401CT23904125-579AA
4.250 +.004/-.000 3.772 +.000/-.003 0.579 4.248 +.000/-.003 0401CT23904250-579AA
4.375 +.004/-.000 3.897 +.000/-.003 0.579 4.373 +.000/-.003 0401CT23904375-579AA
4.500 +.004/-.000 4.022 +.000/-.003 0.579 4.498 +.000/-.003 0401CT23904500-579AA
4.625 +.004/-.000 4.147 +.000/-.003 0.579 4.623 +.000/-.003 0401CT23904625-579AA
4.750 +.004/-.000 4.272 +.000/-.003 0.579 4.748 +.000/-.003 0401CT23904750-579AA
4.875 +.004/-.000 4.397 +.000/-.003 0.579 4.873 +.000/-.003 0401CT23904875-579AA
5.000 +.004/-.000 4.272 +.000/-.003 0.750 4.998 +.000/-.003 0401CT36405000-750AA
5.125 +.004/-.000 4.397 +.000/-.003 0.750 5.123 +.000/-.003 0401CT36405125-750AA
5.250 +.004/-.000 4.522 +.000/-.003 0.750 5.248 +.000/-.003 0401CT36405250-750AA
5.375 +.004/-.000 4.647 +.000/-.003 0.750 5.373 +.000/-.003 0401CT36405375-750AA
5.500 +.004/-.000 4.772 +.000/-.004 0.750 5.497 +.000/-.004 0401CT36405500-750AA
5.625 +.004/-.000 4.897 +.000/-.004 0.750 5.622 +.000/-.004 0401CT36405625-750AA

*If used with wear rings, refer to wear ring piston diameter.
Above table reflects recommended cross-sections for bore diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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CT Profile
PISTON GLAND DIMENSIONS (Standard Style) — CT Profile — Inch (cont’d)
A B C D
Bore Diameter Groove Diameter Groove Width PistonDiameter* Part Number
(Standard Style)
Dia. Tol. Dia. Tol. +.010/-.000 Dia. Tol.
5.750 +.004/-.000 5.022 +.000/-.004 0.750 5.747 +.000/-.004 0401CT36405750-750AA
5.875 +.004/-.000 5.147 +.000/-.004 0.750 5.872 +.000/-.004 0401CT36405875-750AA
6.000 +.004/-.000 5.272 +.000/-.004 0.750 5.997 +.000/-.004 0401CT36406000-750AA
6.125 +.004/-.000 5.397 +.000/-.004 0.750 6.122 +.000/-.004 0401CT36406125-750AA
6.250 +.004/-.000 5.522 +.000/-.004 0.750 6.247 +.000/-.004 0401CT36406250-750AA
6.375 +.004/-.000 5.647 +.000/-.004 0.750 6.372 +.000/-.004 0401CT36406375-750AA
6.500 +.004/-.000 5.772 +.000/-.004 0.750 6.497 +.000/-.004 0401CT36406500-750AA
6.750 +.004/-.000 6.022 +.000/-.004 0.750 6.747 +.000/-.004 0401CT36406750-750AA
7.000 +.004/-.000 6.272 +.000/-.004 0.750 6.997 +.000/-.004 0401CT36407000-750AA
7.250 +.005/-.000 6.522 +.000/-.004 0.750 7.247 +.000/-.004 0401CT36407250-750AA
7.500 +.005/-.000 6.772 +.000/-.004 0.750 7.497 +.000/-.004 0401CT36407500-750AA
7.750 +.005/-.000 7.022 +.000/-.004 0.750 7.747 +.000/-.004 0401CT36407750-750AA
8.000 +.005/-.000 7.272 +.000/-.005 0.750 7.996 +.000/-.005 0401CT36408000-750AA

*If used with wear rings, refer to wear ring piston diameter.
Above table reflects recommended cross-sections for bore diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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OE Profile
The Parker OE profile is a bi-directional piston seal for use in low to medium duty hydraulic applications. The two piece
design is comprised of a standard size Parker O-ring energizing a wear resistant PTFE cap. The OE profile offers long
wear, low friction and because of its short assembly length requires minimal gland space on the piston. The seal is
commonly used in applications such as mobile hydraulics, machine tools, injection molding machines and hydraulic
presses. Parker’s OE profile will retrofit non-Parker seals of similar design.

The OE profile may be ordered without the energizer by omitting the energizer code.

RANGE OF APPLICATION
Standard Material

Cap Energizer
0401 40% bronze- A, 70A Nitrile
filled PTFE

Temperature*
Pressure** Speed
-30°F to +250°F
5000 psi < 13 ft/s
(-34°C to +121°C)
(344 bar) (4 m/s)


*The temperature range of the OE profile is limited to the energizer. A wider temperature
range can be achieved by using alternate energizer compounds.

**Pressure Range without wear rings. If used with wear rings, refer to the Engineering
Section for surface finish and additional hardware considerations.

OPTIONAL (NON-STANDARD) NOTCHED SIDE WALLS:

OE Cross-Section
Adding an “N” to the end of the part number indicates that notches are to be
added to the side walls of the PTFE cap. Notches can help optimize the seal’s
response to fluid pressure by allowing fluid to fill the cavity between the side
face of the gland and the seal.
• Long wearing PTFE cap

• Low friction N = Notched walls
• Low breakaway force
• Easy to install
• Compact, short assembly length

OE installed in Piston Gland

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OE Profile
PART NUMBER NOMENCLATURE
OE Profile — Inch

0 4 0 1 OE 2 1 2 0 4 0 0 0 - 1 6 6 A

Profile Groove Width (x1000)

Example:
.166" x 1000 = 166
Seal Compound Gland Depth (x1000)
4-Digit Material Code Example:
Example: .212" x 1000 = 212
0401 = 40% Bronze-filled PTFE

Bore Diameter (x1000) Energizer Material Code

5 Digits. Include leading A = 70A Nitrile
zeros if needed. Omit = No Energizer
Example:
4.000" x 1000 = 04000

Option:
N = Notched Walls

GLAND DIMENSIONS — OE Profile

Gland Depth

Please refer to the Engineering Section for surface finish and

additional hardware considerations.

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OE Profile
GLAND DIMENSIONS — OE Profile — Inch
C
A B D O-ring
Groove
Bore Diameter Groove Diameter Piston Diameter* Dash Part Number
Width
Number
Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol.
0.500 +.001/-.000 0.326 +.000/-.001 0.081 0.499 +.000/-.002 011 0401OE08700500-081A
0.562 +.001/-.000 0.388 +.000/-.001 0.081 0.561 +.000/-.002 012 0401OE08700562-081A
0.625 +.001/-.000 0.451 +.000/-.001 0.081 0.624 +.000/-.002 013 0401OE08700625-081A
0.687 +.001/-.000 0.513 +.000/-.001 0.081 0.686 +.000/-.002 014 0401OE08700687-081A
0.750 +.001/-.000 0.576 +.000/-.001 0.081 0.749 +.000/-.002 015 0401OE08700750-081A
0.812 +.002/-.000 0.556 +.000/-.002 0.081 0.811 +.000/-.002 015 0401OE12800812-081A
0.875 +.002/-.000 0.619 +.000/-.002 0.081 0.874 +.000/-.002 016 0401OE12800875-081A
0.937 +.002/-.000 0.681 +.000/-.002 0.081 0.936 +.000/-.002 017 0401OE12800937-081A
1.000 +.002/-.000 0.744 +.000/-.002 0.081 0.999 +.000/-.002 018 0401OE12801000-081A
1.062 +.002/-.000 0.806 +.000/-.002 0.081 1.061 +.000/-.002 019 0401OE12801062-081A
1.125 +.002/-.000 0.869 +.000/-.002 0.081 1.124 +.000/-.002 020 0401OE12801125-081A
1.187 +.002/-.000 0.889 +.000/-.003 0.126 1.186 +.000/-.002 118 0401OE14901187-126A
1.250 +.002/-.000 0.952 +.000/-.003 0.126 1.249 +.000/-.002 119 0401OE14901250-126A
1.312 +.002/-.000 1.014 +.000/-.003 0.126 1.311 +.000/-.002 120 0401OE14901312-126A
1.375 +.002/-.000 1.077 +.000/-.003 0.126 1.374 +.000/-.002 121 0401OE14901375-126A
1.437 +.002/-.000 1.139 +.000/-.003 0.126 1.436 +.000/-.002 122 0401OE14901437-126A
1.500 +.002/-.000 1.202 +.000/-.003 0.126 1.499 +.000/-.002 123 0401OE14901500-126A
1.562 +.002/-.000 1.176 +.000/-.003 0.120 1.561 +.000/-.002 123 0401OE19301562-120A
1.625 +.002/-.000 1.239 +.000/-.003 0.120 1.624 +.000/-.002 124 0401OE19301625-120A
1.687 +.002/-.000 1.301 +.000/-.003 0.120 1.686 +.000/-.002 125 0401OE19301687-120A
1.750 +.002/-.000 1.364 +.000/-.003 0.120 1.749 +.000/-.002 126 0401OE19301750-120A
1.875 +.002/-.000 1.489 +.000/-.003 0.120 1.874 +.000/-.002 128 0401OE19301875-120A
2.000 +.002/-.000 1.614 +.000/-.003 0.127 1.999 +.000/-.002 130 0401OE19302000-127A
2.125 +.002/-.000 1.739 +.000/-.003 0.127 2.124 +.000/-.002 132 0401OE19302125-127A
2.250 +.002/-.000 1.864 +.000/-.003 0.127 2.249 +.000/-.002 134 0401OE19302250-127A
2.375 +.002/-.000 1.989 +.000/-.003 0.127 2.374 +.000/-.002 136 0401OE19302375-127A
2.500 +.002/-.000 2.114 +.000/-.003 0.127 2.499 +.000/-.002 138 0401OE19302500-127A
2.625 +.002/-.000 2.239 +.000/-.003 0.127 2.624 +.000/-.002 140 0401OE19302625-127A
2.750 +.002/-.000 2.364 +.000/-.003 0.127 2.749 +.000/-.002 142 0401OE19302750-127A
2.875 +.003/-.000 2.451 +.000/-.004 0.166 2.874 +.000/-.003 230 0401OE21202875-166A
3.000 +.003/-.000 2.576 +.000/-.004 0.166 2.999 +.000/-.003 231 0401OE21203000-166A
3.125 +.003/-.000 2.701 +.000/-.004 0.166 3.124 +.000/-.003 232 0401OE21203125-166A
3.250 +.003/-.000 2.826 +.000/-.004 0.166 3.249 +.000/-.003 233 0401OE21203250-166A
3.375 +.003/-.000 2.951 +.000/-.004 0.166 3.374 +.000/-.003 234 0401OE21203375-166A
3.500 +.003/-.000 3.076 +.000/-.004 0.166 3.499 +.000/-.003 235 0401OE21203500-166A
3.625 +.003/-.000 3.201 +.000/-.004 0.166 3.624 +.000/-.003 236 0401OE21203625-166A
3.750 +.003/-.000 3.326 +.000/-.004 0.166 3.749 +.000/-.003 237 0401OE21203750-166A
3.875 +.003/-.000 3.451 +.000/-.004 0.166 3.874 +.000/-.003 238 0401OE21203875-166A
4.000 +.003/-.000 3.576 +.000/-.004 0.166 3.999 +.000/-.003 239 0401OE21204000-166A
4.125 +.003/-.000 3.701 +.000/-.004 0.166 4.124 +.000/-.003 240 0401OE21204125-166A
4.250 +.003/-.000 3.826 +.000/-.004 0.166 4.249 +.000/-.003 241 0401OE21204250-166A
4.375 +.003/-.000 3.951 +.000/-.004 0.166 4.374 +.000/-.003 242 0401OE21204375-166A
4.500 +.003/-.000 4.076 +.000/-.004 0.166 4.499 +.000/-.003 243 0401OE21204500-166A

*If used with wear rings, refer to wear ring piston diameter.

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PISTON SEALS

OE Profile
GLAND DIMENSIONS — OE Profile — Inch (cont’d)
C
A B D
Groove O-ring
Bore Diameter Groove Diameter Piston Diameter*
Width Dash Part Number
Number
+.005/-
Dia. Tol. Dia. Tol. Dia. Tol.
.000
4.625 +.003/-.000 4.009 +.000/-.006 0.247 4.623 +.000/-.003 345 0401OE30804625-247A
4.750 +.003/-.000 4.134 +.000/-.006 0.247 4.748 +.000/-.003 346 0401OE30804750-247A
4.875 +.003/-.000 4.259 +.000/-.006 0.247 4.873 +.000/-.003 347 0401OE30804875-247A
5.000 +.003/-.000 4.384 +.000/-.006 0.247 4.998 +.000/-.003 348 0401OE30805000-247A
5.125 +.003/-.000 4.509 +.000/-.006 0.247 5.123 +.000/-.003 349 0401OE30805125-247A
5.250 +.003/-.000 4.634 +.000/-.006 0.247 5.248 +.000/-.003 350 0401OE30805250-247A
5.375 +.003/-.000 4.759 +.000/-.006 0.247 5.373 +.000/-.003 351 0401OE30805375-247A
5.500 +.003/-.000 4.884 +.000/-.006 0.247 5.498 +.000/-.003 352 0401OE30805500-247A
5.625 +.003/-.000 5.009 +.000/-.006 0.247 5.623 +.000/-.003 353 0401OE30805625-247A
5.750 +.003/-.000 5.134 +.000/-.006 0.247 5.748 +.000/-.003 354 0401OE30805750-247A
5.875 +.003/-.000 5.259 +.000/-.006 0.247 5.873 +.000/-.003 355 0401OE30805875-247A
6.000 +.003/-.000 5.384 +.000/-.006 0.247 5.998 +.000/-.003 356 0401OE30806000-247A
6.125 +.003/-.000 5.509 +.000/-.006 0.247 6.123 +.000/-.003 357 0401OE30806125-247A
6.250 +.003/-.000 5.634 +.000/-.006 0.247 6.248 +.000/-.003 358 0401OE30806250-247A
6.375 +.003/-.000 5.759 +.000/-.006 0.247 6.373 +.000/-.003 359 0401OE30806375-247A
6.500 +.003/-.000 5.884 +.000/-.006 0.247 6.498 +.000/-.003 360 0401OE30806500-247A
6.750 +.003/-.000 6.134 +.000/-.006 0.247 6.748 +.000/-.003 361 0401OE30806750-247A
7.000 +.003/-.000 6.384 +.000/-.006 0.247 6.998 +.000/-.003 362 0401OE30807000-247A
7.250 +.003/-.000 6.634 +.000/-.006 0.247 7.248 +.000/-.003 363 0401OE30807250-247A
7.500 +.003/-.000 6.884 +.000/-.006 0.247 7.498 +.000/-.003 364 0401OE30807500-247A
7.750 +.003/-.000 7.134 +.000/-.006 0.247 7.748 +.000/-.003 365 0401OE30807750-247A
8.000 +.003/-.000 7.384 +.000/-.006 0.247 7.998 +.000/-.003 366 0401OE30808000-247A
8.250 +.003/-.000 7.634 +.000/-.006 0.247 8.248 +.000/-.003 367 0401OE30808250-247A
8.500 +.003/-.000 7.884 +.000/-.006 0.247 8.498 +.000/-.003 368 0401OE30808500-247A
9.000 +.003/-.000 8.384 +.000/-.006 0.247 8.998 +.000/-.003 370 0401OE30809000-247A
9.500 +.003/-.000 8.884 +.000/-.006 0.247 9.498 +.000/-.003 372 0401OE30809500-247A
*If used with wear
10.000 rings, refer to
+.003/-.000 wear ring+.000/-.006
9.384 piston diameter.0.247 9.998 +.000/-.003 374 0401OE30810000-247A

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OE Profile
GLAND DIMENSIONS — OE Profile — Inch (cont’d)
C
A B D O-ring
Groove
Bore Diameter Groove Diameter Piston Diameter* Dash Part Number
Width
Number
Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol.
7.000 +.004/-.000 6.170 +.000/-.007 0.320 6.998 +.000/-.004 437 0401OE41507000-320A
7.250 +.004/-.000 6.420 +.000/-.007 0.320 7.248 +.000/-.004 438 0401OE41507250-320A
7.500 +.004/-.000 6.670 +.000/-.007 0.320 7.498 +.000/-.004 439 0401OE41507500-320A
7.750 +.004/-.000 6.920 +.000/-.007 0.320 7.748 +.000/-.004 440 0401OE41507750-320A
8.000 +.004/-.000 7.170 +.000/-.007 0.320 7.998 +.000/-.004 441 0401OE41508000-320A
8.250 +.004/-.000 7.420 +.000/-.007 0.320 8.248 +.000/-.004 442 0401OE41508250-320A
8.500 +.004/-.000 7.670 +.000/-.007 0.320 8.498 +.000/-.004 443 0401OE41508500-320A
9.000 +.004/-.000 8.170 +.000/-.007 0.320 8.998 +.000/-.004 445 0401OE41509000-320A
9.500 +.004/-.000 8.670 +.000/-.007 0.320 9.498 +.000/-.004 446 0401OE41509500-320A
10.000 +.004/-.000 9.170 +.000/-.007 0.320 9.998 +.000/-.004 447 0401OE41510000-320A
10.500 +.004/-.000 9.670 +.000/-.007 0.320 10.498 +.000/-.004 448 0401OE41510500-320A
11.000 +.004/-.000 10.170 +.000/-.007 0.320 10.998 +.000/-.004 449 0401OE41511000-320A
11.500 +.004/-.000 10.670 +.000/-.007 0.320 11.498 +.000/-.004 450 0401OE41511500-320A
12.000 +.004/-.000 11.170 +.000/-.007 0.320 11.998 +.000/-.004 451 0401OE41512000-320A
12.500 +.004/-.000 11.670 +.000/-.007 0.320 12.498 +.000/-.004 452 0401OE41512500-320A
13.000 +.004/-.000 12.170 +.000/-.007 0.320 12.998 +.000/-.004 453 0401OE41513000-320A
13.500 +.004/-.000 12.670 +.000/-.007 0.320 13.498 +.000/-.004 454 0401OE41513500-320A
14.000 +.004/-.000 13.170 +.000/-.007 0.320 13.998 +.000/-.004 455 0401OE41514000-320A
14.500 +.004/-.000 13.670 +.000/-.007 0.320 14.498 +.000/-.004 456 0401OE41514500-320A
15.000 +.004/-.000 14.170 +.000/-.007 0.320 14.998 +.000/-.004 457 0401OE41515000-320A
15.500 +.004/-.000 14.670 +.000/-.007 0.320 15.498 +.000/-.004 458 0401OE41515500-320A
16.000 +.004/-.000 15.170 +.000/-.007 0.320 15.998 +.000/-.004 459 0401OE41516000-320A
*If used with wear rings, refer to wear ring piston diameter.
NOTE: For sizes larger than those shown in the table, please contact your local Parker Seal representative.

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SYMMETRIC SEALS

Rod or Piston Applications

Parker symmetric profiles are designed to fit the center of the gland. They are categorized
as symmetric profiles because the shape of the outside diameter sealing lip matches the
shape of the inside diameter sealing lip. This symmetrical design, with its centered fit in the
gland, allows the profile to function either as a rod or piston seal.

ROD or PISTON PROFILES

Standard Materials
Cross
Profile Description Page
Section

0502

0627
0102
Symmetric Seals Decision Tree 48

PTFE jacket, cantilever

FBC spring energized lip seal • • • 49
FlexiSeal for medium hydraulics

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Symmetric Decision Tree

Symmetric seals may be used in either rod or piston applications.

ROD SEAL DECISION TREE

BR +
BR BT
Pressure
Spikes

TP U
PTFE
BT

+
BR BD
Pressure
TP U Spikes

BD BD with
Back-up

Piston Seal Decision Tree

CT

SHOCK
LOADS

BI-DIRECTIONAL
PRESSURE

BP
O-RING
GROOVE?

OE

PTFE-EXTREME TEMPERATURE
OR FLUID

FBC

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FlexiSeal® FBC Profile

Parker’s FBC Profile FlexiSeal is a symmetrical spring-energized PTFE lip seal for rod and piston featuring beveled
style lips, and cantilever spring for maximum ID and OD sealing. FlexiSeal profiles utilize a variety of PTFE jacket
profiles, spring types and materials. PTFE and other machinable high performance materials of construction are used
where elastomeric seals fail to meet an application’s temperature range, chemical resistance or friction requirements
and deliver advantages which include:
• Low friction
• Wide temperature range
• Ultra broad chemical compatibility
• Dry running ability in dynamic sealing applications
• Resistance to degradation, heat aging and physical property alteration during temperature cycling

RANGE OF APPLICATION
Standard Material* Temperature Pressure Speed
Jacket
0102 -320°F to +450°F <1,000 psi ≤13 ft/s
Pigmented PTFE (-196°C to +233°C) (69 bar) (4 m/s)

0502 -200°F to +550°F <3,000 psi ≤13 ft/s

Carbon fiber (-130°C to +290°C) (207 bar) (4 m/s)
filled PTFE

0627 -250°F to +550°F <3,000 psi ≤13 ft/s

PPS & Graphite (-121°C to +290°C) (207 bar) (4 m/s)
filled PTFE

Spring
Medium load, 301 stainless steel cantilever spring

*Alternate Materials: For applications that may require an alternate material, please
FBC Cross-Section contact your local Parker Seal representative.

• B
 eveled lip concentrates lip
sealing force for excellent film
breaking
• Medium load V-spring energizes
sealing lips
• Wide temperature range PTFE
• Ultra broad chemical compatilbility

FBC installed in Rod Gland FBC installed in Piston Gland

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FlexiSeal® FBC Profile

MATING SURFACE FINISH — Surface Roughness, Ra for PTFE FlexiSeal FBC
Symmetrical FlexiSeal® FBC Profile
Unlike elastomer contact seals, PTFE-based FlexiSeals
Media Being Dynamic Surfaces Static Surfaces
can run on very smooth surfaces with or without Sealed
lubrication. Due to the toughness and low coefficient m Inch mm m Inch mm
of friction of PTFE, FlexiSeals slip over the high points
Cryogenics 6 max. 0.15 max. 8 max. 0.2 max.
of the mating surface and resist abrasion. To maximize
seal performance, the recommendations for surface Helium Gas
Hydrogen Gas 8 max. 0.2 max. 12 max. 0.3 max.
roughness in the adjacent table should be followed. Freon
Air
Dynamic surfaces with relatively rough finishes will Nitrogen Gas
Argon
result in higher wear rates which decrease the seal Natural Gas
12 max. 0.3 max. 16 max. 0.4 max.

life and may compromise performance. For additional Fuel (Aircraft & Auto-
motive)
information on understanding and applying the benefits Water
of appropriate hardware surface finish specifications Hydraulic Oil
12 max. 0.3 max. 32 max. 0.8 max.
please consult the Engineering Section of Parker’s PTFE Crude Oil
Sealants
Lip Seal Design Guide (Catalog EPS 5340).

SEAL HEIGHT CALLOUTS, GROOVE WIDTH AND MAX RADIUS — FBC Profile — Inch
A B C
Nominal
Size / Gland Seal Range Groove Standard Heel Extended Heel
Depth
Dia. Tol. Dia. Tol. Callout Groove Width Callout Groove Width
062 0.125 - 2.500 +.000/-.001 Dia A + 0.125 +.001/-.000 083 0.094 / 0.104 140 0.149 / 0.159

093 0.187 - 4.000 +.000/-.002 Dia A + 0.187 +.002/-.000 130 0.141 / 0.151 173 0.183 / 0.193

125 0.375 - 6.000 +.000/-.002 Dia A + 0.250 +.002/-.000 170 0.188 / 0.198 220 0.235 / 0.245

187 0.875 - 8.000 +.000/-.002 Dia A + 0.375 +.002/-.000 260 0.281 / 0.291 310 0.334 / 0.344

250 1.625 - 12.000 +.000/-.003 Dia A + 0.500 +.003/-.000 355 0.375 / 0.385 450 0.475 / 0.485

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FlexiSeal® FBC Profile

PART NUMBER NOMENCLATURE — Symmetrical FlexiSeal® FBC

0 1 0 2 FB C 1 2 5 0 0 5 0 0 1 7 0 S V M

4-Digit Material Code Gland Cross-Section Shaft Diameter Seal Height

Examples: Examples: 5 Digits. Include leading Designation
0102 = Pigmented PTFE 062 = 0.062" zeros if needed. Examples:
0502 = Carbon Fiber 093 = 0.093" Examples: 083 = 0.083"
Filled PTFE 125 = 0.125" 00500 = 0.500" 130 = 0.130"
0627 = PPS + Graphite- 187 = 0.187" 02500 = 2.500" 170 = 0.170"
filled PTFE 250 = 0.250" 11000 = 11.000" 260 = 0.260"
355 = 0.355"
FlexiSeal Gland Type Spring Material
Classification S = Stainless Steel
FB = Inch/Fractional
Spring Design
V = Cantilever

Lip Style Designation Spring Load

C = Chamfered ID & OD M = Medium

GLAND DIMENSIONS — FBC PROFILE

Please refer to the Engineering

Section
for surface finish and additional
hardware considerations.

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FlexiSeal® FBC Profile

GLAND DIMENSIONS — FlexiSeal FBC — Inch

Nominal A B Part Number

Size / Gland Rod or Groove Diameter Bore or Groove Diameter xxxx = Material Code
Depth yyy = Heel Callout
Dia. Tol. Dia. Tol.
062 0.125 +.000/-.001 0.250 +.001/-.000 xxxxFBC06200125yyySVM
0.187 +.000/-.001 0.312 +.001/-.000 xxxxFBC06200187yyySVM
0.250 +.000/-.001 0.375 +.001/-.000 xxxxFBC06200250yyySVM
0.312 +.000/-.001 0.437 +.001/-.000 xxxxFBC06200312yyySVM
0.375 +.000/-.001 0.500 +.001/-.000 xxxxFBC06200375yyySVM
0.437 +.000/-.001 0.562 +.001/-.000 xxxxFBC06200437yyySVM
0.500 +.000/-.001 0.625 +.001/-.000 xxxxFBC06200500yyySVM
0.562 +.000/-.001 0.687 +.001/-.000 xxxxFBC06200562yyySVM
0.625 +.000/-.001 0.750 +.001/-.000 xxxxFBC06200625yyySVM
0.687 +.000/-.001 0.812 +.001/-.000 xxxxFBC06200687yyySVM
0.750 +.000/-.001 0.875 +.001/-.000 xxxxFBC06200750yyySVM
0.812 +.000/-.001 0.937 +.001/-.000 xxxxFBC06200812yyySVM
0.875 +.000/-.001 1.000 +.001/-.000 xxxxFBC06200875yyySVM
0.937 +.000/-.001 1.062 +.001/-.000 xxxxFBC06200937yyySVM
1.000 +.000/-.001 1.125 +.001/-.000 xxxxFBC06201000yyySVM
1.062 +.000/-.001 1.187 +.001/-.000 xxxxFBC06201062yyySVM
1.125 +.000/-.001 1.250 +.001/-.000 xxxxFBC06201125yyySVM
1.187 +.000/-.001 1.312 +.001/-.000 xxxxFBC06201187yyySVM
1.250 +.000/-.001 1.375 +.001/-.000 xxxxFBC06201250yyySVM
1.312 +.000/-.001 1.437 +.001/-.000 xxxxFBC06201312yyySVM
1.375 +.000/-.001 1.500 +.001/-.000 xxxxFBC06201375yyySVM
1.500 +.000/-.001 1.625 +.001/-.000 xxxxFBC06201500yyySVM
1.625 +.000/-.001 1.750 +.001/-.000 xxxxFBC06201625yyySVM
1.750 +.000/-.001 1.875 +.001/-.000 xxxxFBC06201750yyySVM
1.875 +.000/-.001 2.000 +.001/-.000 xxxxFBC06201875yyySVM
2.000 +.000/-.001 2.125 +.001/-.000 xxxxFBC06202000yyySVM
2.125 +.000/-.001 2.250 +.001/-.000 xxxxFBC06202125yyySVM
2.250 +.000/-.001 2.375 +.001/-.000 xxxxFBC06202250yyySVM
2.375 +.000/-.001 2.500 +.001/-.000 xxxxFBC06202375yyySVM
2.500 +.000/-.001 2.625 +.001/-.000 xxxxFBC06202500yyySVM

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SYMMETRIC SEALS

FlexiSeal® FBC Profile

GLAND DIMENSIONS — FlexiSeal FBC — Inch (cont’d)

Nominal A B Part Number

Size / Gland Rod or Groove Diameter Bore or Groove Diameter xxxx = Material Code
Depth yyy = Heel Callout
Dia. Tol. Dia. Tol.
093 0.187 +.000/-.002 0.375 +.002/-.000 xxxxFBC09300187yyySVM
0.250 +.000/-.002 0.437 +.002/-.000 xxxxFBC09300250yyySVM
0.312 +.000/-.002 0.500 +.002/-.000 xxxxFBC09300312yyySVM
0.375 +.000/-.002 0.562 +.002/-.000 xxxxFBC09300375yyySVM
0.437 +.000/-.002 0.625 +.002/-.000 xxxxFBC09300437yyySVM
0.500 +.000/-.002 0.687 +.002/-.000 xxxxFBC09300500yyySVM
0.562 +.000/-.002 0.750 +.002/-.000 xxxxFBC09300562yyySVM
0.625 +.000/-.002 0.812 +.002/-.000 xxxxFBC09300625yyySVM
0.687 +.000/-.002 0.875 +.002/-.000 xxxxFBC09300687yyySVM
0.750 +.000/-.002 0.937 +.002/-.000 xxxxFBC09300750yyySVM
0.812 +.000/-.002 1.000 +.002/-.000 xxxxFBC09300812yyySVM
0.875 +.000/-.002 1.062 +.002/-.000 xxxxFBC09300875yyySVM
0.937 +.000/-.002 1.125 +.002/-.000 xxxxFBC09300937yyySVM
1.000 +.000/-.002 1.187 +.002/-.000 xxxxFBC09301000yyySVM
1.062 +.000/-.002 1.250 +.002/-.000 xxxxFBC09301062yyySVM
1.250 +.000/-.002 1.437 +.002/-.000 xxxxFBC09301250yyySVM
1.312 +.000/-.002 1.500 +.002/-.000 xxxxFBC09301312yyySVM
1.500 +.000/-.002 1.687 +.002/-.000 xxxxFBC09301500yyySVM
1.562 +.000/-.002 1.750 +.002/-.000 xxxxFBC09301562yyySVM
1.750 +.000/-.002 1.937 +.002/-.000 xxxxFBC09301750yyySVM
1.812 +.000/-.002 2.000 +.002/-.000 xxxxFBC09301812yyySVM
2.000 +.000/-.002 2.187 +.002/-.000 xxxxFBC09302000yyySVM
2.312 +.000/-.002 2.500 +.002/-.000 xxxxFBC09302312yyySVM
2.500 +.000/-.002 2.687 +.002/-.000 xxxxFBC09302500yyySVM
2.812 +.000/-.002 3.000 +.002/-.000 xxxxFBC09302812yyySVM
3.000 +.000/-.002 3.187 +.002/-.000 xxxxFBC09303000yyySVM
3.312 +.000/-.002 3.500 +.002/-.000 xxxxFBC09303312yyySVM
3.500 +.000/-.002 3.687 +.002/-.000 xxxxFBC09303500yyySVM
3.812 +.000/-.002 4.000 +.002/-.000 xxxxFBC09303812yyySVM
4.000 +.000/-.002 4.187 +.002/-.000 xxxxFBC09304000yyySVM

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FlexiSeal® FBC Profile

GLAND DIMENSIONS — FlexiSeal FBC — Inch (cont’d)

Nominal A B Part Number

Size / Gland Rod or Groove Diameter Bore or Groove Diameter xxxx = Material Code
Depth yyy = Heel Callout
Dia. Tol. Dia. Tol.
125 0.375 +.000/-.002 0.625 +.002/-.000 xxxxFBC12500375yyySVM
0.500 +.000/-.002 0.750 +.002/-.000 xxxxFBC12500500yyySVM
0.625 +.000/-.002 0.875 +.002/-.000 xxxxFBC12500625yyySVM
0.750 +.000/-.002 1.000 +.002/-.000 xxxxFBC12500750yyySVM
0.875 +.000/-.002 1.125 +.002/-.000 xxxxFBC12500875yyySVM
1.000 +.000/-.002 1.250 +.002/-.000 xxxxFBC12501000yyySVM
1.125 +.000/-.002 1.375 +.002/-.000 xxxxFBC12501125yyySVM
1.250 +.000/-.002 1.500 +.002/-.000 xxxxFBC12501250yyySVM
1.375 +.000/-.002 1.625 +.002/-.000 xxxxFBC12501375yyySVM
1.500 +.000/-.002 1.750 +.002/-.000 xxxxFBC12501500yyySVM
1.625 +.000/-.002 1.875 +.002/-.000 xxxxFBC12501625yyySVM
1.750 +.000/-.002 2.000 +.002/-.000 xxxxFBC12501750yyySVM
1.875 +.000/-.002 2.125 +.002/-.000 xxxxFBC12501875yyySVM
2.000 +.000/-.002 2.250 +.002/-.000 xxxxFBC12502000yyySVM
2.250 +.000/-.002 2.500 +.002/-.000 xxxxFBC12502250yyySVM
2.500 +.000/-.002 2.750 +.002/-.000 xxxxFBC12502500yyySVM
2.750 +.000/-.002 3.000 +.002/-.000 xxxxFBC12502750yyySVM
3.000 +.000/-.002 3.250 +.002/-.000 xxxxFBC12503000yyySVM
3.250 +.000/-.002 3.500 +.002/-.000 xxxxFBC12503250yyySVM
3.500 +.000/-.002 3.750 +.002/-.000 xxxxFBC12503500yyySVM
3.750 +.000/-.002 4.000 +.002/-.000 xxxxFBC12503750yyySVM
4.000 +.000/-.002 4.250 +.002/-.000 xxxxFBC12504000yyySVM
4.250 +.000/-.002 4.500 +.002/-.000 xxxxFBC12504250yyySVM
4.500 +.000/-.002 4.750 +.002/-.000 xxxxFBC12504500yyySVM
4.750 +.000/-.002 5.000 +.002/-.000 xxxxFBC12504750yyySVM
5.000 +.000/-.002 5.250 +.002/-.000 xxxxFBC12505000yyySVM
5.250 +.000/-.002 5.500 +.002/-.000 xxxxFBC12505250yyySVM
5.500 +.000/-.002 5.750 +.002/-.000 xxxxFBC12505500yyySVM
5.750 +.000/-.002 6.000 +.002/-.000 xxxxFBC12505750yyySVM
6.000 +.000/-.002 6.250 +.002/-.000 xxxxFBC12506000yyySVM

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SYMMETRIC SEALS

FlexiSeal® FBC Profile

GLAND DIMENSIONS — FlexiSeal FBC — Inch (cont’d)

Nominal A B Part Number

Size / Gland Rod or Groove Diameter Bore or Groove Diameter xxxx = Material Code
Depth yyy = Heel Callout
Dia. Tol. Dia. Tol.
187 0.875 +.000/-.002 1.250 +.002/-.000 xxxxFBC18700875yyySVM
1.000 +.000/-.002 1.375 +.002/-.000 xxxxFBC18701000yyySVM
1.125 +.000/-.002 1.500 +.002/-.000 xxxxFBC18701125yyySVM
1.500 +.000/-.002 1.875 +.002/-.000 xxxxFBC18701500yyySVM
1.625 +.000/-.002 2.000 +.002/-.000 xxxxFBC18701625yyySVM
2.000 +.000/-.002 2.375 +.002/-.000 xxxxFBC18702000yyySVM
2.125 +.000/-.002 2.500 +.002/-.000 xxxxFBC18702125yyySVM
2.500 +.000/-.002 2.875 +.002/-.000 xxxxFBC18702500yyySVM
2.625 +.000/-.002 3.000 +.002/-.000 xxxxFBC18702625yyySVM
3.000 +.000/-.002 3.375 +.002/-.000 xxxxFBC18703000yyySVM
3.125 +.000/-.002 3.500 +.002/-.000 xxxxFBC18703125yyySVM
3.500 +.000/-.002 3.875 +.002/-.000 xxxxFBC18703500yyySVM
3.625 +.000/-.002 4.000 +.002/-.000 xxxxFBC18703625yyySVM
4.000 +.000/-.002 4.375 +.002/-.000 xxxxFBC18704000yyySVM
4.125 +.000/-.002 4.500 +.002/-.000 xxxxFBC18704125yyySVM
4.500 +.000/-.002 4.875 +.002/-.000 xxxxFBC18704500yyySVM
4.625 +.000/-.002 5.000 +.002/-.000 xxxxFBC18704625yyySVM
5.000 +.000/-.002 5.375 +.002/-.000 xxxxFBC18705000yyySVM
5.125 +.000/-.002 5.500 +.002/-.000 xxxxFBC18705125yyySVM
5.500 +.000/-.002 5.875 +.002/-.000 xxxxFBC18705500yyySVM
5.625 +.000/-.002 6.000 +.002/-.000 xxxxFBC18705625yyySVM
6.000 +.000/-.002 6.375 +.002/-.000 xxxxFBC18706000yyySVM
6.125 +.000/-.002 6.500 +.002/-.000 xxxxFBC18706125yyySVM
6.500 +.000/-.002 6.875 +.002/-.000 xxxxFBC18706500yyySVM
6.625 +.000/-.002 7.000 +.002/-.000 xxxxFBC18706625yyySVM
7.000 +.000/-.002 7.375 +.002/-.000 xxxxFBC18707000yyySVM
7.125 +.000/-.002 7.500 +.002/-.000 xxxxFBC18707125yyySVM
7.500 +.000/-.002 7.875 +.002/-.000 xxxxFBC18707500yyySVM
7.625 +.000/-.002 8.000 +.002/-.000 xxxxFBC18707625yyySVM
8.000 +.000/-.002 8.375 +.002/-.000 xxxxFBC18708000yyySVM

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TION ALOG

FlexiSeal® FBC Profile

GLAND DIMENSIONS — FlexiSeal FBC — Inch

Nominal A B Part Number

Size / Gland Rod or Groove Diameter Bore or Groove Diameter xxxx = Material Code
Depth yyy = Heel Callout
Dia. Tol. Dia. Tol.
250 1.625 +.000/-.003 2.125 +.003/-.000 xxxxFBC25001625yyySVM
2.000 +.000/-.003 2.500 +.003/-.000 xxxxFBC25002000yyySVM
2.250 +.000/-.003 2.750 +.003/-.000 xxxxFBC25002250yyySVM
2.500 +.000/-.003 3.000 +.003/-.000 xxxxFBC25002500yyySVM
2.750 +.000/-.003 3.250 +.003/-.000 xxxxFBC25002750yyySVM
3.000 +.000/-.003 3.500 +.003/-.000 xxxxFBC25003000yyySVM
3.250 +.000/-.003 3.750 +.003/-.000 xxxxFBC25003250yyySVM
3.500 +.000/-.003 4.000 +.003/-.000 xxxxFBC25003500yyySVM
3.750 +.000/-.003 4.250 +.003/-.000 xxxxFBC25003750yyySVM
4.000 +.000/-.003 4.500 +.003/-.000 xxxxFBC25004000yyySVM
4.250 +.000/-.003 4.750 +.003/-.000 xxxxFBC25004250yyySVM
4.500 +.000/-.003 5.000 +.003/-.000 xxxxFBC25004500yyySVM
4.750 +.000/-.003 5.250 +.003/-.000 xxxxFBC25004750yyySVM
5.000 +.000/-.003 5.500 +.003/-.000 xxxxFBC25005000yyySVM
5.250 +.000/-.003 5.750 +.003/-.000 xxxxFBC25005250yyySVM
5.500 +.000/-.003 6.000 +.003/-.000 xxxxFBC25005500yyySVM
5.750 +.000/-.003 6.250 +.003/-.000 xxxxFBC25005750yyySVM
6.000 +.000/-.003 6.500 +.003/-.000 xxxxFBC25006000yyySVM
6.500 +.000/-.003 7.000 +.003/-.000 xxxxFBC25006500yyySVM
7.000 +.000/-.003 7.500 +.003/-.000 xxxxFBC25007000yyySVM
7.500 +.000/-.003 8.000 +.003/-.000 xxxxFBC25007500yyySVM
8.000 +.000/-.003 8.500 +.003/-.000 xxxxFBC25008000yyySVM
8.500 +.000/-.003 9.000 +.003/-.000 xxxxFBC25008500yyySVM
9.000 +.000/-.003 9.500 +.003/-.000 xxxxFBC25009000yyySVM
9.500 +.000/-.003 10.000 +.003/-.000 xxxxFBC25009500yyySVM
10.000 +.000/-.003 10.500 +.003/-.000 xxxxFBC25010000yyySVM
10.500 +.000/-.003 11.000 +.003/-.000 xxxxFBC25010500yyySVM
11.000 +.000/-.003 11.500 +.003/-.000 xxxxFBC25011000yyySVM
11.500 +.000/-.003 12.000 +.003/-.000 xxxxFBC25011500yyySVM
12.000 +.000/-.003 12.500 +.003/-.000 xxxxFBC25012000yyySVM

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ROD WIPERS
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Parker rod wiper profiles represent the latest in advanced sealing technology for today's
fluid power equipment. The combination of optimized geometry and high performance ma-
terial results in highly engineered designs that offer the best possible solution for long life
and improved performance.

ROD WIPER PROFILES

Standard
Material
Cross
Profile Description Page
Section

4300

4700

0401
Rod Wiper Decision Tree 58

YD
Premium snap-in wiper with • 59
O.D. exclusion technology

Performance canned wiper for

J • 62
medium- to heavy-duty service

Premium double-lip wiper for

AY light-, medium- and heavy- • 65
duty hydraulic service

PTFE wiper for light- to

AD • 69
medium-duty hydraulic service

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Wiper Decision Tree

NOTE: Decision Tree is for profile geometry only. Please refer to profile for proper material selection.

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YD Profile
The YD profile wiper is the premier design among high performance, snap-in excluders. Featuring a secondary O.D.
lip which seals against the shoulder region of the gland, the YD profile wiper prevents water and other contaminants
from entering around the static side of the wiper. For ultimate performance, the YD profile also incorporates an
aggressive,
knife-trimmed wiping lip to ensure maximum exclusion along the rod. A true zero-radius lip provides the most
effective wiping action available.

RANGE OF APPLICATION
Standard Material* Temperature Speed
P4300A90 -65°F to +275°F < 1.6 ft/s
(-54°C to +135°C) (0.5 m/s)
Additional Material
P4301A90
-35°F to +225°F < 1.6 ft/s
(-37°C to +107°C) (0.5 m/s)

*Alternate Materials: For applications that may require an alternate material, please
contact your local Parker seal representative.

YD Cross-Section

• Premium Resilon® polyurethane

material
• S
 econdary O.D. lip seals out
contaminants
• A
 ggressive, knife-trimmed wiping lip
• Snap-in installation YD installed in Rod Gland

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TION ALOG

YD Profile
PART NUMBER NOMENCLATURE
YD Profile — Inch

4 3 0 0 YD 0 1 5 0 0

Seal Compound Profile Nominal Rod Diameter (x1000)

4-Digit Material Code 5 Digits. Include leading zeros
Example: if needed.
4300 = 90A Resilon® Example: 1.500" x 1000 = 01500
Polyurethane

GLAND DIMENSIONS —YD Profile

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

GLAND DIMENSIONS — YD Profile — Inch

Hardware Dimensions

C E
A B D Part Number
Groove Max Wiper
Rod Diameter Groove Diameter Shoulder Diameter
Width Axial Width

Dia. Tol. Dia. Tol. +.004/-.000 Dia. Tol.

0.250 +.000/-.001 0.497 +.006/-.000 0.124 0.410 +.005/-.000 0.215 4300YD00250
0.312 +.000/-.001 0.560 +.006/-.000 0.124 0.475 +.005/-.000 0.215 4300YD00312
0.375 +.000/-.001 0.622 +.006/-.000 0.124 0.535 +.005/-.000 0.215 4300YD00375
0.437 +.000/-.001 0.685 +.006/-.000 0.124 0.600 +.005/-.000 0.215 4300YD00437
0.500 +.000/-.001 0.747 +.006/-.000 0.124 0.660 +.005/-.000 0.215 4300YD00500
0.625 +.000/-.001 0.872 +.006/-.000 0.124 0.785 +.005/-.000 0.215 4300YD00625
0.750 +.000/-.001 1.122 +.006/-.000 0.187 0.995 +.005/-.000 0.315 4300YD00750

Above table reflects recommended cross-sections for rod diameters shown. For alternate cross-sections and additional sizes,
contact your Parker representative for assistance.

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YD Profile
GLAND DIMENSIONS — YD Profile — Inch (cont’d)
Hardware Dimensions

C E
A B D
Groove Max Wiper Part Number
Rod Diameter Groove Diameter Shoulder Diameter
Width Axial Width

Dia. Tol. Dia. Tol. +.004/-.000 Dia. Tol.

0.875 +.000/-.001 1.247 +.006/-.000 0.187 1.120 +.005/-.000 0.315 4300YD00875

1.000 +.000/-.002 1.372 +.006/-.000 0.187 1.245 +.005/-.000 0.315 4300YD01000

1.125 +.000/-.002 1.497 +.006/-.000 0.187 1.370 +.005/-.000 0.315 4300YD01125

1.250 +.000/-.002 1.622 +.006/-.000 0.187 1.495 +.005/-.000 0.315 4300YD01250

1.375 +.000/-.002 1.747 +.006/-.000 0.187 1.620 +.005/-.000 0.315 4300YD01375

1.500 +.000/-.002 1.872 +.006/-.000 0.187 1.745 +.005/-.000 0.315 4300YD01500

1.625 +.000/-.002 1.997 +.006/-.000 0.187 1.870 +.005/-.000 0.315 4300YD01625

1.750 +.000/-.002 2.122 +.006/-.000 0.187 1.995 +.005/-.000 0.315 4300YD01750

1.875 +.000/-.002 2.247 +.006/-.000 0.187 2.120 +.005/-.000 0.315 4300YD01875

2.000 +.000/-.002 2.497 +.006/-.000 0.249 2.327 +.005/-.000 0.415 4300YD02000

2.125 +.000/-.002 2.622 +.006/-.000 0.249 2.452 +.005/-.000 0.415 4300YD02125

2.250 +.000/-.002 2.747 +.006/-.000 0.249 2.577 +.005/-.000 0.415 4300YD02250

2.375 +.000/-.002 2.872 +.006/-.000 0.249 2.702 +.005/-.000 0.415 4300YD02375

2.500 +.000/-.002 2.997 +.006/-.000 0.249 2.827 +.005/-.000 0.415 4300YD02500

2.625 +.000/-.002 3.122 +.006/-.000 0.249 2.952 +.005/-.000 0.415 4300YD02625

2.750 +.000/-.002 3.247 +.006/-.000 0.249 3.077 +.005/-.000 0.415 4300YD02750

3.000 +.000/-.002 3.497 +.006/-.000 0.249 3.327 +.005/-.000 0.415 4300YD03000

3.250 +.000/-.002 3.747 +.006/-.000 0.249 3.577 +.005/-.000 0.415 4300YD03250

3.500 +.000/-.002 3.997 +.006/-.000 0.249 3.827 +.005/-.000 0.415 4300YD03500

3.750 +.000/-.002 4.247 +.006/-.000 0.249 4.077 +.005/-.000 0.415 4300YD03750

4.000 +.000/-.002 4.497 +.006/-.000 0.249 4.327 +.005/-.000 0.415 4300YD04000

4.250 +.000/-.002 4.747 +.006/-.000 0.249 4.577 +.005/-.000 0.415 4300YD04250

4.500 +.000/-.002 5.247 +.006/-.000 0.374 4.993 +.005/-.000 0.620 4300YD04500

4.750 +.000/-.002 5.497 +.006/-.000 0.374 5.243 +.005/-.000 0.620 4300YD04750

5.000 +.000/-.002 5.747 +.006/-.000 0.374 5.493 +.005/-.000 0.620 4300YD05000

5.500 +.000/-.002 6.247 +.006/-.000 0.374 5.993 +.005/-.000 0.620 4300YD05500

6.000 +.000/-.002 6.747 +.006/-.000 0.374 6.493 +.005/-.000 0.620 4300YD06000

6.500 +.000/-.002 7.247 +.006/-.000 0.374 6.993 +.005/-.000 0.620 4300YD06500

6.750 +.000/-.002 7.497 +.006/-.000 0.374 7.243 +.005/-.000 0.620 4300YD06750

7.000 +.000/-.002 7.747 +.006/-.000 0.374 7.493 +.005/-.000 0.620 4300YD07000

7.500 +.000/-.002 8.247 +.006/-.000 0.374 7.993 +.005/-.000 0.620 4300YD07500

8.000 +.000/-.003 8.747 +.006/-.000 0.374 8.493 +.005/-.000 0.620 4300YD08000

8.500 +.000/-.003 9.247 +.006/-.000 0.374 8.993 +.005/-.000 0.620 4300YD08500

9.000 +.000/-.003 9.747 +.006/-.000 0.374 9.493 +.005/-.000 0.620 4300YD09000

10.000 +.000/-.003 10.997 +.006/-.000 0.374 10.659 +.005/-.000 0.820 4300YD10000

Above table reflects recommended cross-sections for rod diameters shown. For alternate cross-sections and additional sizes,
contact your Parker representative for assistance.

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J Profile
The press-fit installation of Parker’s J profile wiper guards against O.D. contamination. The wiping lip on the J profile
wiper is very aggressive, eliminating the ingression of dust, mud and moisture from harsh work areas. J profile
wipers are ideal for medium and heavy duty hydraulic cylinders in the most demanding applications.

RANGE OF APPLICATION
Standard Material Temperature Speed
P4700A90 -65°F to +200°F < 1.6 ft/s
Carbon Steel (-54°C to +93°C) (0.5 m/s)

J Cross-Section

• Press-fit installation allows for

simplified hardware machining
• A
 ggressive, knife-trimmed wiping
lip excludes contaminants
• Ideal for medium- to heavy-duty-
service J installed in Rod Gland

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J Profile
PART NUMBER NOMENCLATURE
J Profile – Inch

4 7 0 0 J 0 3 0 0 0

Profile Nominal Rod Diameter (x1000)

5 Digits. Add leading zeros
Seal Compound if needed.
4-Digit Material Code Example: 3.00" x 1000 = 03000
Example:
4700 = 90A Polyurethane

GLAND DIMENSIONS — J Profile

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

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J Profile
GLAND DIMENSIONS — J Profile — Inch
Hardware Dimensions

A B C Part
Rod Diameter Groove Diameter Groove Width Number

Dia. Tol. Dia. Tol. +.015/-.000

0.750 +.000/-.002 1.250 +.001/-.001 0.312 4700J00750
0.875 +.000/-.002 1.375 +.001/-.001 0.312 4700J00875
1.000 +.000/-.002 1.500 +.001/-.001 0.312 4700J01000
1.125 +.000/-.002 1.625 +.001/-.001 0.312 4700J01125
1.250 +.000/-.002 1.750 +.001/-.001 0.312 4700J01250
1.375 +.000/-.002 1.875 +.001/-.001 0.312 4700J01375
1.500 +.000/-.002 2.000 +.001/-.001 0.312 4700J01500
1.750 +.000/-.002 2.250 +.001/-.001 0.312 4700J01750
2.000 +.000/-.002 2.500 +.001/-.001 0.312 4700J02000
2.125 +.000/-.002 2.625 +.001/-.001 0.312 4700J02125
2.250 +.000/-.002 2.750 +.001/-.001 0.312 4700J02250
2.375 +.000/-.002 2.875 +.001/-.001 0.312 4700J02375
2.500 +.000/-.002 3.000 +.001/-.001 0.312 4700J02500
2.625 +.000/-.002 3.125 +.001/-.001 0.312 4700J02625
2.750 +.000/-.002 3.250 +.001/-.001 0.312 4700J02750
3.000 +.000/-.002 3.500 +.001/-.001 0.312 4700J03000
3.250 +.000/-.002 3.875 +.001/-.001 0.312 4700J03250
3.500 +.000/-.002 4.125 +.001/-.001 0.312 4700J03500
3.750 +.000/-.002 4.375 +.001/-.001 0.312 4700J03750
4.000 +.000/-.002 4.625 +.001/-.001 0.312 4700J04000
4.250 +.000/-.002 4.875 +.001/-.001 0.312 4700J04250
4.500 +.000/-.002 5.125 +.001/-.001 0.312 4700J04500
5.000 +.000/-.002 5.625 +.001/-.001 0.312 4700J05000
5.500 +.000/-.002 6.125 +.001/-.001 0.312 4700J05500

Above table reflects recommended cross-sections for rod diameters shown. For alternate cross-sections and
additional sizes, contact your Parker representative for assistance.

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AY Profile
The AY profile can be used as a light to heavy duty wiper. When used in high pressure applications with the proper
Parker rod seals, the AY profile complements the sealing system by providing an additional beveled sealing lip,
yielding excellent film-breaking and the driest rod sealing available. Knife-trimmed sealing lips ensure the best
possible film breaking.

IMPORTANT: It is important to select a rod seal profile that enables pressure relief of fluid into the system, otherwise a
pressure trap may form between the wiper and rod seal. Suggested rod profile is BT U-cup.

RANGE OF APPLICATION
Standard Material* Temperature Speed
P4300A90 -65°F to +275°F < 1.6 ft/s
(-54°C to +135°C) (0.5 m/s)

Additional Material
P4301A90 -35°F to +225°F < 1.6 ft/s
(-37°C to +107°C) (0.5 m/s)

*Alternate Materials: For applications that may require an alternate material, please
contact your local Parker seal representative.

AY Cross-Section

• P  remium Resilon® polyurethane

• D  ouble-lip profile provides
redundant sealing for improved
leakage control
• Aggressive wiping
lip excludes contaminants
• Ideal for light- to heavy-duty AY installed in Rod Gland
service

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AY Profile
PART NUMBER NOMENCLATURE
AY Profile — Inch

4 3 0 0 AY 0 1 7 5 0

Seal Compound Profile Nominal Rod Diameter (x1000)

4-Digit Material Example: 1.75" x 1000 = 01750
Code 5 Digits. Add leading zeros
Example: if needed.
4300 = 90A Resilon®
Polyurethane

GLAND DIMENSIONS — AY Profile

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

GLAND DIMENSIONS — AY Profile — Inch

C E
A B D
Groove Max.
Rod Diameter Groove Diameter Shoulder Diameter
Width Wiper Axial Part Number
Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol. Width

0.250 +.000/-.001 0.552 +.002/-.000 0.203 0.370 +.002/-.000 0.245 4300AY00250

0.312 +.000/-.001 0.615 +.002/-.000 0.203 0.432 +.002/-.000 0.245 4300AY00312
0.375 +.000/-.001 0.677 +.002/-.000 0.203 0.495 +.002/-.000 0.245 4300AY00375
0.437 +.000/-.001 0.740 +.002/-.000 0.203 0.557 +.002/-.000 0.245 4300AY00437
0.500 +.000/-.001 0.802 +.002/-.000 0.203 0.620 +.002/-.000 0.245 4300AY00500
0.562 +.000/-.001 0.865 +.002/-.000 0.203 0.682 +.002/-.000 0.245 4300AY00562
0.750 +.000/-.001 1.052 +.002/-.000 0.203 0.870 +.002/-.000 0.245 4300AY00750
0.812 +.000/-.001 1.177 +.002/-.000 0.218 0.947 +.002/-.000 0.275 4300AY00812
0.875 +.000/-.001 1.240 +.002/-.000 0.218 1.010 +.002/-.000 0.275 4300AY00875

Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 84

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AY Profile
GLAND DIMENSIONS — AY Profile — Inch (cont’d)
C E
A B D
Groove Max.
Rod Diameter Groove Diameter Shoulder Diameter Part Number
Width Wiper Axial
Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol. Width

1.000 +.000/-.002 1.365 +.002/-.000 0.218 1.135 +.002/-.000 0.275 4300AY01000

1.125 +.000/-.002 1.490 +.002/-.000 0.218 1.260 +.002/-.000 0.275 4300AY01125
1.250 +.000/-.002 1.615 +.002/-.000 0.218 1.385 +.002/-.000 0.275 4300AY01250
1.375 +.000/-.002 1.740 +.002/-.000 0.218 1.510 +.002/-.000 0.275 4300AY01375
1.500 +.000/-.002 1.865 +.002/-.000 0.218 1.635 +.002/-.000 0.275 4300AY01500
1.625 +.000/-.002 1.990 +.002/-.000 0.218 1.760 +.002/-.000 0.275 4300AY01625
1.750 +.000/-.002 2.115 +.002/-.000 0.218 1.885 +.002/-.000 0.275 4300AY01750
1.812 +.000/-.002 2.177 +.002/-.000 0.218 1.947 +.002/-.000 0.275 4300AY01812
1.875 +.000/-.002 2.240 +.002/-.000 0.218 2.010 +.002/-.000 0.275 4300AY01875
2.000 +.000/-.002 2.365 +.002/-.000 0.218 2.135 +.002/-.000 0.275 4300AY02000
2.125 +.000/-.002 2.490 +.003/-.000 0.218 2.260 +.003/-.000 0.275 4300AY02125
2.250 +.000/-.002 2.745 +.003/-.000 0.281 2.385 +.003/-.000 0.351 4300AY02250
2.375 +.000/-.002 2.870 +.003/-.000 0.281 2.510 +.003/-.000 0.351 4300AY02375
2.500 +.000/-.002 2.995 +.003/-.000 0.281 2.635 +.003/-.000 0.351 4300AY02500
2.750 +.000/-.002 3.245 +.003/-.000 0.281 2.885 +.003/-.000 0.351 4300AY02750
3.000 +.000/-.002 3.495 +.003/-.000 0.281 3.135 +.003/-.000 0.351 4300AY03000
3.125 +.000/-.002 3.620 +.003/-.000 0.281 3.260 +.003/-.000 0.351 4300AY03125
3.500 +.000/-.002 3.995 +.003/-.000 0.281 3.635 +.003/-.000 0.351 4300AY03500
3.750 +.000/-.002 4.245 +.003/-.000 0.281 3.885 +.003/-.000 0.351 4300AY03750
4.000 +.000/-.002 4.495 +.003/-.000 0.281 4.135 +.003/-.000 0.351 4300AY04000
4.250 +.000/-.002 4.745 +.003/-.000 0.281 4.385 +.003/-.000 0.351 4300AY04250
4.500 +.000/-.002 4.995 +.003/-.000 0.281 4.635 +.003/-.000 0.351 4300AY04500
4.750 +.000/-.002 5.245 +.003/-.000 0.281 4.885 +.003/-.000 0.351 4300AY04750
5.000 +.000/-.002 5.495 +.003/-.000 0.281 5.135 +.003/-.000 0.351 4300AY05000
5.500 +.000/-.002 5.995 +.003/-.000 0.281 5.635 +.003/-.000 0.351 4300AY05500
5.750 +.000/-.002 6.245 +.003/-.000 0.281 5.885 +.003/-.000 0.351 4300AY05750
6.000 +.000/-.002 6.495 +.003/-.000 0.281 6.135 +.003/-.000 0.351 4300AY06000
6.250 +.000/-.002 6.745 +.003/-.000 0.281 6.385 +.003/-.000 0.351 4300AY06250
6.500 +.000/-.002 6.995 +.003/-.000 0.281 6.635 +.003/-.000 0.351 4300AY06500
7.000 +.000/-.002 7.495 +.003/-.000 0.281 7.135 +.003/-.000 0.351 4300AY07000
7.500 +.000/-.003 7.995 +.003/-.000 0.281 7.635 +.003/-.000 0.351 4300AY07500
8.000 +.000/-.003 8.495 +.003/-.000 0.281 8.135 +.003/-.000 0.351 4300AY08000
8.500 +.000/-.003 8.995 +.003/-.000 0.281 8.635 +.003/-.000 0.351 4300AY08500
9.000 +.000/-.003 9.495 +.003/-.000 0.281 9.135 +.003/-.000 0.351 4300AY09000
9.500 +.000/-.003 9.995 +.003/-.000 0.281 9.635 +.003/-.000 0.351 4300AY09500
10.000 +.000/-.003 10.495 +.003/-.000 0.281 10.135 +.003/-.000 0.351 4300AY10000

Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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AY Metric Profile
PART NUMBER NOMENCLATURE
AY Profile — Metric

M 3 0 0 AY 0 4 . 0 0 4 5 - 4 . 5

Seal Compound Profile Gland Depth (mm) or Seal Seal Nom. ID Seal Nom. Width
4-Digit Material Code Nom. Radial Cross-section (mm) Example: (mm) Example:
(First digit “4” of 4300 Example: 04.0 = 4.0 mm 035 = 35 mm 035 = 35 mm
replaced with “M” for metric)

GLAND DIMENSIONS — AY Metric Profile

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

GLAND DIMENSIONS and PART NUMBER — AY Profile — Metric

A B C D E
Rod Diameter Groove Diameter Groove Width Shoulder Diameter Wiper Axial ISO* Part Number
Width
Dia. Tol. (f7) Dia. Tol. (H9) +.13/-.00 Dia. Tol. (H9)

20 -.02/-.04 26 +.05/-.00 4.0 22.5 +.05/-.00 4.8 • M300AY03.0020-3.6

25 -.02/-.04 31 +.06/-.00 4.0 27.5 +.05/-.00 4.8 • M300AY03.0025-3.6
28 -.02/-.04 36 +.06/-.00 5.0 31.0 +.06/-.00 5.8 • M300AY04.0028-4.5
32 -.03/-.05 40 +.06/-.00 5.0 35.0 +.06/-.00 5.8 • M300AY04.0032-4.5
36 -.03/-.05 44 +.06/-.00 5.0 39.0 +.06/-.00 5.8 • M300AY04.0036-4.5
40 -.03/-.05 48 +.06/-.00 5.0 43.0 +.06/-.00 5.8 • M300AY04.0040-4.5
45 -.03/-.05 53 +.07/-.00 5.0 48.0 +.06/-.00 5.8 • M300AY04.0045-4.5
50 -.03/-.05 58 +.07/-.00 5.0 53.0 +.07/-.00 5.8 M300AY04.0050-5.0
55 -.03/-.06 65 +.07/-.00 5.0 58.0 +.07/-.00 5.8 M300AY05.0055-4.5
55 -.03/-.06 65 +.07/-.00 6.0 58.0 +.07/-.00 6.8 M300AY05.0055-5.3
56 -.03/-.06 66 +.07/-.00 6.0 59.0 +.07/-.00 6.8 • M300AY05.0056-5.3
63 -.03/-.06 73 +.07/-.00 6.0 66.0 +.07/-.00 6.8 • M300AY05.0063-5.3
64 -.03/-.06 74 +.07/-.00 6.0 67.0 +.07/-.00 6.8 M300AY05.0064-5.3
70 -.03/-.06 80 +.07/-.00 6.0 73.0 +.07/-.00 6.8 • M300AY05.0070-5.3
75 -.03/-.06 85 +.09/-.00 6.0 78.0 +.07/-.00 6.8 M300AY05.0075-5.3
80 -.03/-.06 90 +.09/-.00 6.0 83.0 +.09/-.00 6.8 • M300AY05.0080-5.3
90 -.03/-.07 100 +.09/-.00 6.0 93.0 +.09/-.00 6.8 • M300AY05.0090-5.3
100 -.03/-.07 110 +.09/-.00 6.0 103.0 +.09/-.00 6.8 • M300AY05.0100-5.3
110 -.03/-.07 125 +.10/-.00 8.5 114.0 +.09/-.00 9.5 • M300AY07.5110-7.5
120 -.03/-.07 135 +.10/-.00 8.5 124.0 +.10/-.00 9.5 • M300AY07.5120-7.5
125 -.04/-.08 140 +.10/-.00 8.5 129.0 +.10/-.00 9.5 • M300AY07.5125-7.5
140 -.04/-.08 155 +.10/-.00 8.5 144.0 +.10/-.00 9.5 • M300AY07.5140-7.5
160 -.04/-.08 175 +.10/-.00 8.5 164.0 +.10/-.00 9.5 • M300AY07.5160-7.5

*DIN ISO 6195, Type C, for ISO 6020-2 cylinders

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AD Profile
The Parker AD profile is a double acting wiper for use in low to medium duty hydraulic cylinders. It is a two-piece
design comprised of a filled PTFE cap that is energized by a standard size O-ring. The wiping and sealing design of the
AD profile assists the primary rod seal in preventing leakage by helping seal fluid in the cylinder when the rod extends.
When the cylinder rod retracts, the outside sealing edge prevents contamination from entering the system. Parker’s
AD profile will retrofit non-Parker wipers of similar design.

The AD profile may be ordered without the energizer by omitting the energizer code.

RANGE OF APPLICATION
Standard Material

Cap Energizer
0401 A, 70A Nitrile
40% bronze-filled PTFE

Temperature* Speed
-30°F to +250°F < 13 ft/s
(-34°C to +121°C) (4 m/s)

*The temperature range of the AD profile is limited by the elastomer energizer.

A wider temperature range can be achieved by using alternate energizer compounds.

Standard AD Cross-Section

• Double acting
• Low- to medium-duty hydraulics
• Low friction PTFE
• Retrofits non-Parker wipers of
similar design

AD installed in Rod Gland

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AD Profile
PART NUMBER NOMENCLATURE
AD Profile — Inch

0 4 0 1 AD 1 3 5 0 2 0 0 0 - 1 9 6 A

Seal Compound Profile Nominal Rod Diameter (x1000)

4-Digit Material Code 5 Digits. Include leading zeros if
Example: needed.
0401 = 40% bronze- Example: 2.000" x 1000 = 02000
Groove Width
filled PTFE
(x1000)
Example:
Gland Depth (x1000) .196 x 1000 = 196
Example:
.135 x 1000 = 135
Energizer Compound Code
Example: A = 70A Nitrile
Omit = No Energizer

GLAND DIMENSIONS — AD Profile

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

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AD Profile
GLAND DIMENSIONS — AD Profile — Inch
Hardware Dimensions

A C D O-Ring
B
Rod Groove Shoulder Dash Part Number
Groove Diameter
Diameter Width Diameter Number

Dia. Tol. Dia. Tol. +.008/-.000 Dia. Tol.

+.000/- +.002/- +.004/-
0.250 0.440 0.146 0.310 011 0401AD09500250-146A
.002 .000 .000
+.000/- +.002/- +.004/-
0.312 0.502 0.146 0.372 012 0401AD09500312-146A
.002 .000 .000
+.000/- +.002/- +.004/-
0.375 0.565 0.146 0.435 013 0401AD09500375-146A
.002 .000 .000
+.000/- +.002/- +.004/-
0.437 0.627 0.146 0.497 014 0401AD09500437-146A
.002 .000 .000
+.000/- +.002/- +.004/-
0.500 0.690 0.146 0.560 015 0401AD09500500-146A
.002 .000 .000
+.000/- +.003/- +.006/-
0.625 0.895 0.196 0.685 115 0401AD13500625-196A
.003 .000 .000
+.000/- +.003/- +.006/-
0.750 1.020 0.196 0.810 117 0401AD13500750-196A
.003 .000 .000
+.000/- +.003/- +.006/-
0.875 1.145 0.196 0.935 119 0401AD13500875-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.000 1.270 0.196 1.060 121 0401AD13501000-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.125 1.395 0.196 1.185 123 0401AD13501125-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.250 1.520 0.196 1.310 125 0401AD13501250-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.375 1.645 0.196 1.435 127 0401AD13501375-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.500 1.770 0.196 1.560 129 0401AD13501500-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.625 1.895 0.196 1.685 131 0401AD13501625-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.750 2.020 0.196 1.810 133 0401AD13501750-196A
.003 .000 .000
+.000/- +.003/- +.006/-
1.875 2.145 0.196 1.935 135 0401AD13501875-196A
.003 .000 .000
+.000/- +.003/- +.006/-
2.000 2.270 0.196 2.060 137 0401AD13502000-196A
.003 .000 .000
+.000/- +.003/- +.006/-
2.125 2.395 0.196 2.185 139 0401AD13502125-196A
.003 .000 .000
+.000/- +.003/- +.006/-
2.250 2.520 0.196 2.310 141 0401AD13502250-196A
.003 .000 .000
+.000/- +.003/- +.006/-
2.375 2.645 0.196 2.435 143 0401AD13502375-196A
.003 .000 .000
+.000/- +.003/- +.006/-
2.500 2.770 0.196 2.560 145 0401AD13502500-196A
.003 .000 .000
Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be
considered.
Consult your Parker representative for assistance.

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AD Profile
GLAND DIMENSIONS — AD Profile — Inch (cont’d)
Hardware Dimensions

C D O-Ring
A B
Groove Shoulder Dash Part Number
Rod Diameter Groove Diameter
Width Diameter Number

Dia. Tol. Dia. Tol. +.008/-.000 Dia. Tol.

2.625 +.000/-.004 2.969 +.004/-.000 0.236 2.685 +.008/-.000 232 0401AD17202625-236A

2.750 +.000/-.004 3.094 +.004/-.000 0.236 2.810 +.008/-.000 233 0401AD17202750-236A

2.875 +.000/-.004 3.219 +.004/-.000 0.236 2.935 +.008/-.000 234 0401AD17202875-236A

3.000 +.000/-.004 3.344 +.004/-.000 0.236 3.060 +.008/-.000 235 0401AD17203000-236A

3.125 +.000/-.004 3.469 +.004/-.000 0.236 3.185 +.008/-.000 236 0401AD17203125-236A

3.250 +.000/-.004 3.594 +.004/-.000 0.236 3.310 +.008/-.000 237 0401AD17203250-236A

3.375 +.000/-.004 3.719 +.004/-.000 0.236 3.435 +.008/-.000 238 0401AD17203375-236A

3.500 +.000/-.004 3.844 +.004/-.000 0.236 3.560 +.008/-.000 239 0401AD17203500-236A

3.625 +.000/-.004 3.969 +.004/-.000 0.236 3.685 +.008/-.000 240 0401AD17203625-236A

3.750 +.000/-.004 4.094 +.004/-.000 0.236 3.810 +.008/-.000 241 0401AD17203750-236A

3.875 +.000/-.004 4.219 +.004/-.000 0.236 3.935 +.008/-.000 242 0401AD17203875-236A

4.000 +.000/-.004 4.344 +.004/-.000 0.236 4.060 +.008/-.000 243 0401AD17204000-236A

4.250 +.000/-.004 4.594 +.004/-.000 0.236 4.310 +.008/-.000 245 0401AD17204250-236A

4.500 +.000/-.004 4.844 +.004/-.000 0.236 4.560 +.008/-.000 247 0401AD17204500-236A

4.750 +.000/-.004 5.094 +.004/-.000 0.236 4.810 +.008/-.000 249 0401AD17204750-236A

5.000 +.000/-.004 5.344 +.004/-.000 0.236 5.060 +.008/-.000 251 0401AD17205000-236A

5.250 +.000/-.004 5.594 +.004/-.000 0.236 5.310 +.008/-.000 253 0401AD17205250-236A

5.500 +.000/-.004 5.844 +.004/-.000 0.236 5.560 +.008/-.000 255 0401AD17205500-236A

5.750 +.000/-.04 6.094 +.004/-.000 0.236 5.810 +.008/-.000 257 0401AD17205750-236A

6.000 +.000/-.004 6.344 +.004/-.000 0.236 6.060 +.008/-.000 258 0401AD17206000-236A

6.250 +.000/-.004 6.594 +.004/-.000 0.236 6.310 +.008/-.000 259 0401AD17206250-236A

6.500 +.000/-.004 6.844 +.004/-.000 0.236 6.560 +.008/-.000 260 0401AD17206500-236A

6.750 +.000/-.004 7.094 +.004/-.000 0.236 6.810 +.008/-.000 261 0401AD17206750-236A

7.000 +.000/-.004 7.344 +.004/-.000 0.236 7.060 +.008/-.000 262 0401AD17207000-236A

7.250 +.000/-.004 7.594 +.004/-.000 0.236 7.310 +.008/-.000 263 0401AD17207250-236A

7.500 +.000/-.004 7.844 +.004/-.000 0.236 7.560 +.008/-.000 264 0401AD17207500-236A

7.750 +.000/-.004 8.094 +.004/-.000 0.236 7.810 +.008/-.000 265 0401AD17207750-236A

8.000 +.000/-.004 8.344 +.004/-.000 0.236 8.060 +.008/-.000 266 0401AD17208000-236A

8.250 +.000/-.004 8.594 +.004/-.000 0.236 8.310 +.008/-.000 267 0401AD17208250-236A

8.500 +.000/-.004 8.844 +.004/-.000 0.236 8.560 +.008/-.000 268 0401AD17208500-236A

8.750 +.000/-.004 9.094 +.004/-.000 0.236 8.810 +.008/-.000 269 0401AD17208750-236A

9.000 +.000/-.004 9.344 +.004/-.000 0.236 9.060 +.008/-.000 270 0401AD17209000-236A

Above table reflects recommended cross-sections for rod diameters shown. Alternate cross-sections and additional sizes may be considered.
Consult your Parker representative for assistance.

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WPT, WRT and PDW profiles are installed to prevent damage caused by metal-to-
metal contact between components, especially in cases where the cylinder is oriented
horizontally or the rod is eccentrically loaded.

Wear bands require larger clearances between metal components to function properly,
reducing the pressure rating of seals. Tight-tolerance WPT and WRT profiles are precision
molded, which allows for smaller extrusion gaps, thus protecting the seals under high
pressure.

WEAR RING PROFILES

Standard Material

Cross
Profile Description Page
Section

0307
4778
WPT Tight tolerance piston wear ring • 77

WRT Tight tolerance rod wear ring • 80

Machined PTFE wear rings for

PDW • 83
rod and piston

FEATURES, ADVANTAGES and BENEFITS

Feature Advantage Benefit

Dynamic bearing Eliminates metal-to-metal contact Prevents rod, piston and seal damage due to
surface contact between components scoring and reduces warranty costs

Enables tighter hardware clearances Increases seal life by reducing extrusion gaps
Precision manufactured cross-section
than conventional wear rings associated with conventional wear rings

Lowers operating temperature and increases

Low-friction, premium materials Reduces frictional heat build-up
seal life

Maximizes bearing contact area and

compressive strength, eliminating the Prolongs cylinder life through uniform
Precise flatness on bearing surface
“dog bone” effect of conventional net- sideload resistance
molded wear rings.

Metal particulates and other

Advanced, high performance,
contaminants can be imbedded in the Protects seals from contamination
polymeric materials
wear ring material

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FAQs
There are many factors to consider when designing a system. Following are the frequently asked questions regarding
bearing design and choosing the right wear ring.

WHAT IS THE PERFORMANCE DIFFERENCE the increased extrusion gaps. See the chart below for more
BETWEEN STANDARD-TOLERANCE AND information.
TIGHT-TOLERANCE WEAR RINGS?
Standard-tolerance wear rings have a radial wall HOW IS A PROPER BEARING WIDTH SELECT-
tolerance that is held to ±.0025", while Parker WPT ED?
and WRT tight-tolerance wear rings are held to ±.001" When selecting the width of your wear ring, it is crucial
(under 6" diameter). Tight-tolerance wear rings allow to evaluate the side loads that the rings will have to
for a more precise fit of components, resulting in less withstand. Figure 1 shows the total pressure area, AP,
dimensional “play.” This allows the extrusion gap to be that a radial force from a side load will affect. Area, AP is
smaller for tight-tolerance wear rings, thus increasing the calculated as follows:
seal’s pressure rating beyond that of standard-tolerance
wear rings. This becomes especially important at
high temperatures, where the pressure rating of seal Ap = ØD x W
materials is further reduced.
where D is the bearing O.D. for pistons or the bearing I.D.
WEAR RING GROOVES CALL FOR LARGER for rods, and W is the bearing width.
EXTRUSION GAPS. HOW DOES THIS AFFECT
THE SEALS’ PRESSURE RATING?
Since wear rings compress under heavy loading, the F
hardware clearances must increase to prevent metal-
to-metal contact. This creates a larger extrusion gap,
and as a result, the seals’ pressure ratings will decrease.
Pre-established gland dimensions outlined in this catalog
always result in a maximum 0.005" radial clearance for
W
metal components. As such, standard-tolerance wear
rings can reduce a seal’s pressure capability by 50%.
Using tight-tolerance wear rings enables the extrusion
gaps to be held closer, and the seal’s pressure ratings
are only reduced by 30%. In either case, it is important to
select proper seal and back-up materials to accommodate

Figure 1: Total affected pressure area, AP

Figure 2: Typical Pressure Ratings for Standard Seal Compounds in Reciprocating Applications at +160°F (see Note)

0.005" (0.13mm) Maximum radial gap

(typical gland dimensions without wear rings)
WPT and WRT tight tolerance wear rings, 0.010" (0.25mm)
PDW and other standard tolerance wear
rings, 0.013" (0.33mm)
Pressure (psi)

Note: Pressure ratings are based

upon a test temperature of +160°F
(+70°C). Lower temperatures will
increase a material’s pressure rating.
Higher temperatures will decrease
pressure ratings. Maximum radial
gap is equal to the diametrical gap
when wear rings are not used. Wear
rings keep hardware concentric,
but increase extrusion gaps to
Urethane

thane

PTFE

PTFE
Rubber

Rubber

Rubber

(Plastic)

(Plastic)
Low Temp

A Polyure-

Nylon

Virgin PTFE

Glass-filled

Bronze-filled
70 Shore A

80 Shore A

90 Shore A

60 Shore D

65 Shore D
P5065A88

90 Shore

15%

40%

keep metal-to-metal contact from

occurring, thereby decreasing
pressure ratings when used.
Compounds

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FAQs
It is important to note that the pressure distribution will Compressive Strength, q, can be found in the material
not be equally dispersed across this area. Instead, the properties tables on the next page. This value is
pressure profile takes the form shown in Figure 3. The based upon known material deflection at 73°F and at a
assumed load-bearing area, AL, can be calculated as specified load. Parker recommends a factor of safety,
follows: FS, of at least 3 to account for changes in physical
properties due to increases in system temperature. If
additional assistance is required, please contact Parker
Ap ØD x W
AL = = or your authorized distributor.
5 5
WHERE SHOULD THE WEAR RING BE
To calculate the allowable radial force, F, simply INSTALLED RELATIVE TO THE SEALS?
multiply the load-bearing area, AL, by the permissible Wear rings should always be installed on the lubrication
compressive load (compressive strength) of the (wet) side of the seal for best performance. For rod
material, q, and divide by the desired factor of safety, glands, the wear ring should be on the pressure side of
FS. the rod seal. For pistons, if only one bearing is to be
used, it should be on the side of the piston opposite the
To calculate the proper bearing width, W, based on a rod. This arrangement keeps the piston wear ring further
known radial force: away from the rod wear ring. This becomes critical when
the rod is at full extension and provides better leveraging
5xF of the two bearing surfaces.
W= x FS
ØD x q
WHICH END CUT SHOULD BE USED?
There are two types of end cuts available: butt cut and
Once W is calculated, round up to the next nominal width
angle cut (skive cut). The butt cut is the most common
(1/8" increments).
and most economical cut. Angle cuts provide added
performance by ensuring bearing area overlap at the
To calculate the allowable radial force, F, based on a
wear ring’s gap. Figure 4 illustrates these options.
known bearing width:

AL x q ØD x W x q
F= =
FS 5 x FS

F
Butt Cut Angle (Skive) Cut
Figure 4: End cuts

5 5
W

Figure 3: Load distribution of radial

force, F, and effective load area, AL

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TION ALOG

Materials
Parker offers wear ring and bearing materials that are anchored by our more than 50 years of manufacturing and
materials science expertise.

ENGINEERED PLASTICS: 4778

Our glass loaded 4778 material with internal lubrication for low friction, delivers best-in-class compressive modulus
in a wear ring configuration. WPT and WRT Series wear rings in 4778 material withstand deflection, reduce tolerance
stack-up, and maximize resistance to side load.

PTFE: CARBON-GRAPHITE FILLED 0307

Carbon reduces creep, increases hardness and elevates the thermal conductivity of PTFE. This 23% Carbon, 2%
Graphite-filled PTFE compound delivers good wear resistance and performs well in non-lubricated applications.

TYPICAL PHYSICAL PROPERTIES OF W4778 ENGINEERED PLASTIC

Property Unit 4778 Test Method

Compressive Strength, q psi 28500 ASTM D695, 73°F

Tensile Strength psi 29750 ASTM D638, 73°F

Flexural Strength psi 41550 ASTM D790, 73°F

Flexural Modulus Kpsi 1900 ASTM D790, 73°F

24 hour immersion,
Water Absorption % 0.2 ASTM D570, 73°F

Temperature Range °F -65 to +275 —

PHYSICAL AND MECHANICAL PROPERTIES OF 0307 PTFE

0307

Property Unit 23% Carbon-, Test Method

2% Graphite-
Filled PTFE

Compressive Strength, q psi 3600 ASTM D1457-81A

Tensile Strength psi 2250 ASTM D1457-81A

Elongation % 100 ASTM D4894

ASTM D621, 24 hrs

Deformation Under Load % 2.5 @ 2000 psi, 70°F

Coefficient of Friction — 0.08 - 0.11 ASTM D3702

Temperature Range °F -250 to +575 —

Shore D Hardness — 64 ASTM D2240-75

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WPT Profile
TIGHT-TOLERANCE PISTON WEAR RING
WPT profile tight-tolerance piston wear rings are the premier bearings for light- to heavy-duty hydraulic applications.
WPT profile wear rings are available in standard sizes from 1" up to 12" bore diameters (larger sizes upon request).
WPT profile wear rings feature chamfered corners on the I.D. and are designed to snap closed during assembly to
hold tight against the piston, eliminating bore interference and simplifying installation.

TECHNICAL DATA
Standard Material Radial Cross-Section End Cuts
Tolerance
4778 Glass-loaded +.000"/-.002" (up to 6" O.D.); Butt Cut (Standard)
Nylon +.000"/-.003" (6" to 12" O.D.)

Additional End Cut Option: Temperature Speed

Angle Cut (Skive Cut) - 65 to +275° F < 3 ft/s
(-54 to +135°C) (1 m/s)

Butt Cut Angle Cut

WPT Cross-Section

• Precision
 radial wall tolerance
reduces misalignment and
prevents binding up
• T
 ight tolerance reduces extrusion
gap for increased seal pressure
capability
• C
 hamfers eliminate interference
with groove radii
• Accommodates simplified
housing design

Piston sealing system

comprised of WPT wear rings and BP bi-directional piston seal

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WPT Profile
PART NUMBER NOMENCLATURE
WPT Profile — Inch

4 7 7 8 WPT 1 2 5 – 0 4 0 0 0 – 0 5 0 0

Material Max. Cross-Section Nominal Width (W) (x1000)

4 Digit Material Code Example: 125 = 1/8" Example: 0.500" x 1000 = 0500
Example: (0125 to 2000 or larger)
4778 = Glass-loaded Nylon

Profile Nominal Bore Diameter End Cut

(A) (x1000) Example:
5 Digits. Include leading Blank = Butt Cut
zeros if needed. SKIV = Skive Cut
Example: Skive cut minimum
4.000" x 1000 = 04000 diameter 1.500"
I.D., maximum width
0.750"

GLAND DIMENSIONS — WPT Profile

0.015 Max. Radius

(Typ. 2 Places)
D

Please refer to the Engineering Section for surface finish and

W A B additional hardware considerations.
C

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WPT Profile
GLAND DIMENSIONS — WPT Profile — Inch
Hardware Dimensions
Part Number
A B C D (Alternate part widths are
Bore Diameter Groove Diameter Piston Diameter Groove Width available—see previous page
for part numbering)
Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000

.062 Cross Section

1.125 +.002/-.000 1.000 +.000/-.002 1.108 +.000/-.002 0.260 4778WPT062-01125-0250
1.250 +.002/-.000 1.125 +.000/-.002 1.233 +.000/-.002 0.260 4778WPT062-01250-0250
1.375 +.002/-.000 1.250 +.000/-.002 1.358 +.000/-.002 0.260 4778WPT062-01375-0250
1.500 +.002/-.000 1.375 +.000/-.002 1.483 +.000/-.002 0.385 4778WPT062-01500-0375
1.625 +.002/-.000 1.374 +.000/-.002 1.608 +.000/-.002 0.385 4778WPT062-01625-0375
1.750 +.002/-.000 1.499 +.000/-.002 1.733 +.000/-.002 0.385 4778WPT062-01750-0375
1.875 +.002/-.000 1.624 +.000/-.002 1.858 +.000/-.002 0.385 4778WPT062-01875-0375
.125 Cross Section
2.000 +.002/-.000 1.749 +.000/-.002 1.983 +.000/-.002 0.510 4778WPT125-02000-0500
2.250 +.002/-.000 1.999 +.000/-.002 2.233 +.000/-.002 0.510 4778WPT125-02250-0500
2.500 +.002/-.000 2.249 +.000/-.002 2.483 +.000/-.002 0.510 4778WPT125-02500-0500
2.750 +.002/-.000 2.499 +.000/-.002 2.733 +.000/-.002 0.510 4778WPT125-02750-0500
3.000 +.002/-.000 2.749 +.000/-.002 2.983 +.000/-.002 0.510 4778WPT125-03000-0500
3.250 +.002/-.000 2.999 +.000/-.002 3.233 +.000/-.002 0.510 4778WPT125-03250-0500
3.500 +.002/-.000 3.249 +.000/-.002 3.483 +.000/-.002 0.510 4778WPT125-03500-0500
3.750 +.002/-.000 3.499 +.000/-.002 3.733 +.000/-.002 0.510 4778WPT125-03750-0500
4.000 +.002/-.000 3.749 +.000/-.002 3.983 +.000/-.002 0.510 4778WPT125-04000-0500
4.250 +.002/-.000 3.999 +.000/-.002 4.233 +.000/-.002 0.510 4778WPT125-04250-0500
4.500 +.002/-.000 4.249 +.000/-.002 4.483 +.000/-.002 0.510 4778WPT125-04500-0500
4.750 +.002/-.000 4.499 +.000/-.002 4.733 +.000/-.002 0.510 4778WPT125-04750-0500
5.000 +.004/-.000 4.749 +.000/-.003 4.982 +.000/-.003 0.510 4778WPT125-05000-0500
5.250 +.004/-.000 4.999 +.000/-.003 5.232 +.000/-.003 0.510 4778WPT125-05250-0500
5.500 +.004/-.000 5.249 +.000/-.003 5.482 +.000/-.003 0.510 4778WPT125-05500-0500
5.750 +.004/-.000 5.499 +.000/-.003 5.732 +.000/-.003 0.510 4778WPT125-05750-0500
6.000 +.004/-.000 5.749 +.000/-.003 5.982 +.000/-.003 0.760 4778WPT125-06000-0750
6.250 +.004/-.000 5.999 +.000/-.003 6.232 +.000/-.003 0.760 4778WPT125-06250-0750
6.500 +.004/-.000 6.249 +.000/-.003 6.482 +.000/-.003 0.760 4778WPT125-06500-0750
6.750 +.004/-.000 6.499 +.000/-.003 6.732 +.000/-.003 0.760 4778WPT125-06750-0750
7.000 +.004/-.000 6.749 +.000/-.003 6.082 +.000/-.003 0.760 4778WPT125-07000-0750
7.500 +.004/-.000 7.249 +.000/-.003 7.482 +.000/-.003 0.760 4778WPT125-07500-0750

Above table reflects recommended cross-sections for bore diameters shown. For alternate cross-sections and additional sizes,
contact your Parker representative for assistance.

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WRT Profile
WRT profile tight-tolerance rod wear rings, when combined with the WPT profile, complete the premier cylinder
bearing system. Recommended for light- to heavy-duty hydraulic applications, they are available in standard
sizes from
7/8" up to 7" rod diameters (larger sizes upon request). WRT profile wear rings feature chamfered corners on the O.D.
and are designed to snap open during assembly to hold tight against the head gland, eliminating rod interference and
simplifying installation.

TECHNICAL DATA
Standard Material Radial Cross-Section End Cuts
Tolerance
4778 Glass-loaded +.000"/-.002" (up to 5-3/4" I.D.); Butt Cut (Standard)
Nylon +.000"/-.003" (5-3/4" to 7" I.D.)

Additional End Cut Option: Temperature Speed
Angle Cut (Skive Cut) - 65 to +275° F < 3 ft/s
(-54 to +135°C) (1 m/s)

Butt Cut Angle Cut

WRT Cross-Section

• Precision
 radial wall tolerance
reduces misalignment and
prevents binding up
• T
 ight tolerance reduces extrusion
gap for increased seal pressure
capability
• C
 hamfers eliminate interference
with groove radii
• Accommodates simplified Rod sealing system comprised of WRT wear ring,
housing design BR buffer ring assembly, BT u-cup and J canned wiper

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WRT Profile
PART NUMBER NOMENCLATURE
WRT Profile — Inch

4 7 7 8 WRT 1 2 5 – 0 2 0 0 0 – 0 7 5 0

Material Max. Cross- Nominal Width (x1000) (W)

4 Digit Material Code Section Example: 0.750" x 1000 =
Example: Example: 125 = 0750
4778 = Glass-loaded 1/8" (0125 to 2000 or larger)
Nylon

Profile Nominal Rod Diameter End Cut

(x1000) (A1) Example:
5 Digits. Include Blank = Butt Cut
leading zeros if SKIV = Skive Cut
needed. Skive cut minimum
Example: diameter 1.500" I.D.,
2.000" x 1000 = 02000 maximum width 0.750"

GLAND DIMENSIONS — WRT Profile

Please refer to the Engineering Section for surface finish

and additional hardware considerations.

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WRT Profile
GLAND DIMENSIONS — WRT Profile — Inch
Hardware Dimensions
Part Number
D
A1 B1 C1 (Alternate part widths are
Groove
Rod Diameter Groove Diameter Throat Diameter available—see previous page
Width
for part numbering)
Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000
.062 Cross Section
1.000 +.000/-.002 1.125 +.002/-.000 1.017 +.002/-.000 0.260 4778WRT062-01000-0250
1.125 +.000/-.002 1.250 +.002/-.000 1.142 +.002/-.000 0.260 4778WRT062-01125-0250
1.250 +.000/-.002 1.375 +.002/-.000 1.267 +.002/-.000 0.385 4778WRT062-01250-0375
1.375 +.000/-.002 1.500 +.002/-.000 1.392 +.002/-.000 0.385 4778WRT062-01375-0375
1.500 +.000/-.002 1.625 +.002/-.000 1.517 +.002/-.000 0.385 4778WRT062-01500-0375
1.625 +.000/-.002 1.750 +.002/-.000 1.642 +.002/-.000 0.385 4778WRT062-01625-0375
1.750 +.000/-.002 1.875 +.002/-.000 1.767 +.002/-.000 0.385 4778WRT062-01750-0375
1.875 +.000/-.002 2.000 +.002/-.000 1.892 +.002/-.000 0.385 4778WRT062-01875-0375
.125 Cross Section
2.000 +.000/-.002 2.251 +.002/-.000 2.017 +.002/-.000 0.510 4778WRT125-02000-0500
2.250 +.000/-.002 2.501 +.002/-.000 2.267 +.002/-.000 0.510 4778WRT125-02250-0500
2.500 +.000/-.002 2.751 +.002/-.000 2.517 +.002/-.000 0.510 4778WRT125-02500-0500
2.750 +.000/-.002 3.001 +.002/-.000 2.767 +.002/-.000 0.510 4778WRT125-02750-0500
3.000 +.000/-.002 3.251 +.002/-.000 3.017 +.002/-.000 0.510 4778WRT125-03000-0500
3.250 +.000/-.002 3.501 +.002/-.000 3.267 +.002/-.000 0.510 4778WRT125-03250-0500
3.500 +.000/-.002 3.751 +.002/-.000 3.517 +.002/-.000 0.510 4778WRT125-03500-0500
3.750 +.000/-.002 4.001 +.002/-.000 3.767 +.002/-.000 0.510 4778WRT125-03750-0500
4.000 +.000/-.002 4.251 +.002/-.000 4.017 +.002/-.000 0.760 4778WRT125-04000-0750
4.250 +.000/-.002 4.501 +.002/-.000 4.267 +.002/-.000 0.760 4778WRT125-04250-0750
4.500 +.000/-.002 4.751 +.002/-.000 4.517 +.002/-.000 0.760 4778WRT125-04500-0750
4.750 +.000/-.002 5.001 +.002/-.000 4.767 +.002/-.000 0.760 4778WRT125-04750-0750
5.000 +.000/-.002 5.251 +.002/-.000 5.017 +.002/-.000 0.760 4778WRT125-05000-0750
5.250 +.000/-.002 5.501 +.002/-.000 5.267 +.002/-.000 0.760 4778WRT125-05250-0750
5.500 +.000/-.002 5.751 +.002/-.000 5.517 +.002/-.000 0.760 4778WRT125-05500-0750
5.750 +.000/-.004 6.001 +.003/-.000 5.770 +.003/-.000 0.760 4778WRT125-05750-0750
6.000 +.000/-.004 6.251 +.003/-.000 6.020 +.003/-.000 0.760 4778WRT125-06000-0750
6.250 +.000/-.004 6.501 +.003/-.000 6.270 +.003/-.000 0.760 4778WRT125-06250-0750
6.500 +.000/-.004 6.751 +.003/-.000 6.520 +.003/-.000 0.760 4778WRT125-06500-0750
6.750 +.000/-.004 7.001 +.003/-.000 6.770 +.003/-.000 0.760 4778WRT125-06750-0750
7.000 +.000/-.004 7.251 +.003/-.000 7.020 +.003/-.000 0.760 4778WRT125-07000-0750

Above table reflects recommended cross-sections for rod diameters shown. For alternate cross-sections and additional sizes,
contact your Parker representative for assistance.

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PDW Profile
PDW profile wear rings are precision machined PTFE bearings, lathecut to exact size and shape. PDW profile
wear rings offer precise fitting and easy installation. Filled PTFE material gives these machined wear rings
versatility to accommodate any light-duty hydraulic application requiring low friction and high temperature
capabilities.

TECHNICAL DATA
Standard Material Radial Cross- Section End Cuts
Tolerance
0307 – 23% Carbon, +.000"/-.004" Butt Cut (Standard),
2% Graphite- Angle Cut (Skive Cut)
Filled PTFE

Additional materials Temperature Speed

available upon request. -250 to +575°F < 13 ft/s
(-157 to +302°C) (4 m/s)

Butt Cut Angle Cut

WRT Cross-Section

• Precision machined fit

• Easy to install
• L
 ow friction PTFE material

Piston sealing system utilizing Rod sealing system utilizing

PDW machined wear ring PDW machined wear ring

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PDW Profile
PART NUMBER NOMENCLATURE
PDW Profile — Inch

0 3 0 7 PDW C 0 4 5 0 0 B 0 5 0 0

Material Profile Cut Type

4-Digit Material Code Examples:
Example: Wear Ring Radial A = Angle Cut
0307 = Carbon- Cross-Section Style B = Butt Cut
Graphite filled PTFE Examples:
A = Piston; 0.062" thick Wear Ring Nominal
B = Piston; 0.093" thick Width (W) (x1000)
C = Piston; 0.125" thick Example:
D = Rod; 0.062" thick 0.500" x 1000 = 0500
E = Rod; 0.093" thick (0125 to 2000 or
F = Rod; 0.125" thick larger)

Nominal Diameter (x1000)

5 digits. Use leading zeros if required
Example: “C” Style, 04500 = 4.500" Bore
(Bore Dia. for Styles A, B, C)
(Rod Dia. for Styles D, E, F)

GLAND DIMENSIONS — PDW Profile, Piston

0.015 Max. Radius

(Typ. 2 Places)
D

W Please refer to the Engineering Section for surface finish and

A B C additional hardware considerations.

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PDW Profile
GLAND DIMENSIONS — PDW Profile, Piston — Inch

A B C D
Part Number
Bore Diameter Groove Diameter Piston Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWA

0.687 +.002/-.000 0.562 +.000/-.002 0.666 +.000/-.002 D = W + 0.010" 0307 PDWA 00687 X XXXX
0.750 +.002/-.000 0.625 +.000/-.002 0.729 +.000/-.002 D = W + 0.010" 0307 PDWA 00750 X XXXX
0.812 +.002/-.000 0.687 +.000/-.002 0.791 +.000/-.002 D = W + 0.010" 0307 PDWA 00812 X XXXX
0.875 +.002/-.000 0.750 +.000/-.002 0.854 +.000/-.002 D = W + 0.010" 0307 PDWA 00875 X XXXX
0.937 +.002/-.000 0.812 +.000/-.002 0.916 +.000/-.002 D = W + 0.010" 0307 PDWA 00937 X XXXX
1.000 +.002/-.000 0.875 +.000/-.002 0.979 +.000/-.002 D = W + 0.010" 0307 PDWA 01000 X XXXX
1.062 +.002/-.000 0.937 +.000/-.002 1.041 +.000/-.002 D = W + 0.010" 0307 PDWA 01062 X XXXX
1.125 +.002/-.000 1.000 +.000/-.002 1.104 +.000/-.002 D = W + 0.010" 0307 PDWA 01125 X XXXX
1.187 +.002/-.000 1.062 +.000/-.002 1.166 +.000/-.002 D = W + 0.010" 0307 PDWA 01187 X XXXX
1.250 +.002/-.000 1.125 +.000/-.002 1.229 +.000/-.002 D = W + 0.010" 0307 PDWA 01250 X XXXX
1.312 +.002/-.000 1.187 +.000/-.002 1.291 +.000/-.002 D = W + 0.010" 0307 PDWA 01312 X XXXX
1.375 +.002/-.000 1.250 +.000/-.002 1.354 +.000/-.002 D = W + 0.010" 0307 PDWA 01375 X XXXX
1.437 +.002/-.000 1.312 +.000/-.002 1.416 +.000/-.002 D = W + 0.010" 0307 PDWA 01437 X XXXX
1.500 +.002/-.000 1.375 +.000/-.002 1.479 +.000/-.002 D = W + 0.010" 0307 PDWA 01500 X XXXX
1.562 +.002/-.000 1.437 +.000/-.002 1.541 +.000/-.002 D = W + 0.010" 0307 PDWA 01562 X XXXX
1.625 +.002/-.000 1.500 +.000/-.002 1.604 +.000/-.002 D = W + 0.010" 0307 PDWA 01625 X XXXX
1.687 +.002/-.000 1.562 +.000/-.002 1.666 +.000/-.002 D = W + 0.010" 0307 PDWA 01687 X XXXX
1.750 +.002/-.000 1.625 +.000/-.002 1.729 +.000/-.002 D = W + 0.010" 0307 PDWA 01750 X XXXX
1.875 +.002/-.000 1.750 +.000/-.002 1.854 +.000/-.002 D = W + 0.010" 0307 PDWA 01875 X XXXX
2.000 +.002/-.000 1.875 +.000/-.002 1.979 +.000/-.002 D = W + 0.010" 0307 PDWA 02000 X XXXX
Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWB
1.500 +.002/-.000 1.313 +.000/-.002 1.479 +.000/-.002 D = W + 0.010" 0307 PDWB 01500 X XXXX
1.562 +.002/-.000 1.375 +.000/-.002 1.541 +.000/-.002 D = W + 0.010" 0307 PDWB 01562 X XXXX
1.625 +.002/-.000 1.438 +.000/-.002 1.604 +.000/-.002 D = W + 0.010" 0307 PDWB 01625 X XXXX
1.687 +.002/-.000 1.500 +.000/-.002 1.666 +.000/-.002 D = W + 0.010" 0307 PDWB 01687 X XXXX
1.750 +.002/-.000 1.563 +.000/-.002 1.729 +.000/-.002 D = W + 0.010" 0307 PDWB 01750 X XXXX
1.875 +.002/-.000 1.688 +.000/-.002 1.854 +.000/-.002 D = W + 0.010" 0307 PDWB 01875 X XXXX
2.000 +.002/-.000 1.813 +.000/-.002 1.979 +.000/-.002 D = W + 0.010" 0307 PDWB 02000 X XXXX
2.125 +.002/-.000 1.938 +.000/-.002 2.104 +.000/-.002 D = W + 0.010" 0307 PDWB 02125 X XXXX
2.250 +.002/-.000 2.063 +.000/-.002 2.229 +.000/-.002 D = W + 0.010" 0307 PDWB 02250 X XXXX
2.375 +.002/-.000 2.188 +.000/-.002 2.354 +.000/-.002 D = W + 0.010" 0307 PDWB 02375 X XXXX
2.500 +.002/-.000 2.313 +.000/-.002 2.479 +.000/-.002 D = W + 0.010" 0307 PDWB 02500 X XXXX
2.625 +.002/-.000 2.438 +.000/-.002 2.604 +.000/-.002 D = W + 0.010" 0307 PDWB 02625 X XXXX
2.750 +.002/-.000 2.563 +.000/-.002 2.729 +.000/-.002 D = W + 0.010" 0307 PDWB 02750 X XXXX
2.875 +.002/-.000 2.688 +.000/-.002 2.854 +.000/-.002 D = W + 0.010" 0307 PDWB 02875 X XXXX
3.000 +.002/-.000 2.813 +.000/-.002 2.979 +.000/-.002 D = W + 0.010" 0307 PDWB 03000 X XXXX
3.125 +.002/-.000 2.938 +.000/-.002 3.104 +.000/-.002 D = W + 0.010" 0307 PDWB 03125 X XXXX

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PDW Profile
GLAND DIMENSIONS — PDW Profile, Piston — Inch (cont’d)
A B C D
Part Number
Bore Diameter Groove Diameter Piston Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWB

3.250 +.002/-.000 3.063 +.000/-.002 3.229 +.000/-.002 D = W + 0.010" 0307 PDWB 03250 X XXXX
3.375 +.002/-.000 3.188 +.000/-.002 3.354 +.000/-.002 D = W + 0.010" 0307 PDWB 03375 X XXXX
3.500 +.002/-.000 3.313 +.000/-.002 3.479 +.000/-.002 D = W + 0.010" 0307 PDWB 03500 X XXXX
3.625 +.002/-.000 3.438 +.000/-.002 3.604 +.000/-.002 D = W + 0.010" 0307 PDWB 03625 X XXXX
3.750 +.002/-.000 3.563 +.000/-.002 3.729 +.000/-.002 D = W + 0.010" 0307 PDWB 03750 X XXXX
3.875 +.002/-.000 3.688 +.000/-.002 3.854 +.000/-.002 D = W + 0.010" 0307 PDWB 03875 X XXXX
4.000 +.002/-.000 3.813 +.000/-.002 3.979 +.000/-.002 D = W + 0.010" 0307 PDWB 04000 X XXXX
4.125 +.002/-.000 3.938 +.000/-.002 4.104 +.000/-.002 D = W + 0.010" 0307 PDWB 04125 X XXXX
4.250 +.002/-.000 4.063 +.000/-.002 4.229 +.000/-.002 D = W + 0.010" 0307 PDWB 04250 X XXXX
4.375 +.002/-.000 4.188 +.000/-.002 4.354 +.000/-.002 D = W + 0.010" 0307 PDWB 04375 X XXXX
4.500 +.002/-.000 4.313 +.000/-.002 4.479 +.000/-.002 D = W + 0.010" 0307 PDWB 04500 X XXXX
4.625 +.002/-.000 4.438 +.000/-.002 4.604 +.000/-.002 D = W + 0.010" 0307 PDWB 04625 X XXXX
4.750 +.002/-.000 4.563 +.000/-.002 4.729 +.000/-.002 D = W + 0.010" 0307 PDWB 04750 X XXXX
4.875 +.002/-.000 4.688 +.000/-.002 4.854 +.000/-.002 D = W + 0.010" 0307 PDWB 04875 X XXXX
5.000 +.002/-.000 4.813 +.000/-.002 4.978 +.000/-.002 D = W + 0.010" 0307 PDWB 05000 X XXXX
5.125 +.002/-.000 4.938 +.000/-.002 5.103 +.000/-.002 D = W + 0.010" 0307 PDWB 05125 X XXXX
5.250 +.002/-.000 5.063 +.000/-.002 5.228 +.000/-.002 D = W + 0.010" 0307 PDWB 05250 X XXXX
5.375 +.002/-.000 5.188 +.000/-.002 5.353 +.000/-.002 D = W + 0.010" 0307 PDWB 05375 X XXXX
5.500 +.002/-.000 5.313 +.000/-.002 5.478 +.000/-.002 D = W + 0.010" 0307 PDWB 05500 X XXXX
5.625 +.002/-.000 5.438 +.000/-.002 5.603 +.000/-.002 D = W + 0.010" 0307 PDWB 05625 X XXXX
5.750 +.002/-.000 5.563 +.000/-.002 5.728 +.000/-.002 D = W + 0.010" 0307 PDWB 05750 X XXXX
5.875 +.002/-.000 5.688 +.000/-.002 5.853 +.000/-.002 D = W + 0.010" 0307 PDWB 05875 X XXXX
6.000 +.002/-.000 5.813 +.000/-.002 5.978 +.000/-.002 D = W + 0.010" 0307 PDWB 06000 X XXXX
6.125 +.002/-.000 5.938 +.000/-.002 6.103 +.000/-.002 D = W + 0.010" 0307 PDWB 06125 X XXXX
6.250 +.002/-.000 6.063 +.000/-.002 6.228 +.000/-.002 D = W + 0.010" 0307 PDWB 06250 X XXXX
6.375 +.002/-.000 6.188 +.000/-.002 6.353 +.000/-.002 D = W + 0.010" 0307 PDWB 06375 X XXXX
6.500 +.002/-.000 6.313 +.000/-.002 6.478 +.000/-.002 D = W + 0.010" 0307 PDWB 06500 X XXXX
6.750 +.002/-.000 6.563 +.000/-.002 6.728 +.000/-.002 D = W + 0.010" 0307 PDWB 06750 X XXXX
7.000 +.002/-.000 6.813 +.000/-.002 6.978 +.000/-.002 D = W + 0.010" 0307 PDWB 07000 X XXXX
7.250 +.002/-.000 7.063 +.000/-.002 7.228 +.000/-.002 D = W + 0.010" 0307 PDWB 07250 X XXXX
7.500 +.002/-.000 7.313 +.000/-.002 7.478 +.000/-.002 D = W + 0.010" 0307 PDWB 07500 X XXXX
7.750 +.002/-.000 7.563 +.000/-.002 7.728 +.000/-.002 D = W + 0.010" 0307 PDWB 07750 X XXXX
8.000 +.006/-.000 7.813 +.000/-.004 7.977 +.000/-.004 D = W + 0.010" 0307 PDWB 08000 X XXXX
8.250 +.006/-.000 8.063 +.000/-.004 8.227 +.000/-.004 D = W + 0.010" 0307 PDWB 08250 X XXXX
8.500 +.006/-.000 8.313 +.000/-.004 8.477 +.000/-.004 D = W + 0.010" 0307 PDWB 08500 X XXXX
9.000 +.006/-.000 8.813 +.000/-.004 8.977 +.000/-.004 D = W + 0.010" 0307 PDWB 09000 X XXXX
9.500 +.006/-.000 9.313 +.000/-.004 9.477 +.000/-.004 D = W + 0.010" 0307 PDWB 09500 X XXXX
10.000 +.006/-.000 9.813 +.000/-.004 9.977 +.000/-.004 D = W + 0.010" 0307 PDWB 10000 X XXXX

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 104

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ALOG TION

PDW Profile
GLAND DIMENSIONS — PDW Profile, Piston — Inch (cont’d)
A B C D
Part Number
Bore Diameter Groove Diameter Piston Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWC

2.000 +.002/-.000 1.749 +.000/-.002 1.979 +.000/-.002 D = W + 0.010" 0307 PDWC 02000 X XXXX
2.125 +.002/-.000 1.874 +.000/-.002 2.104 +.000/-.002 D = W + 0.010" 0307 PDWC 02125 X XXXX
2.250 +.002/-.000 1.999 +.000/-.002 2.229 +.000/-.002 D = W + 0.010" 0307 PDWC 02250 X XXXX
2.375 +.002/-.000 2.124 +.000/-.002 2.354 +.000/-.002 D = W + 0.010" 0307 PDWC 02375 X XXXX
2.500 +.002/-.000 2.249 +.000/-.002 2.479 +.000/-.002 D = W + 0.010" 0307 PDWC 02500 X XXXX
2.625 +.002/-.000 2.374 +.000/-.002 2.604 +.000/-.002 D = W + 0.010" 0307 PDWC 02625 X XXXX
2.750 +.002/-.000 2.499 +.000/-.002 2.729 +.000/-.002 D = W + 0.010" 0307 PDWC 02750 X XXXX
2.875 +.002/-.000 2.624 +.000/-.002 2.854 +.000/-.002 D = W + 0.010" 0307 PDWC 02875 X XXXX
3.000 +.002/-.000 2.749 +.000/-.002 2.979 +.000/-.002 D = W + 0.010" 0307 PDWC 03000 X XXXX
3.125 +.002/-.000 2.874 +.000/-.002 3.104 +.000/-.002 D = W + 0.010" 0307 PDWC 03125 X XXXX
3.250 +.002/-.000 2.999 +.000/-.002 3.229 +.000/-.002 D = W + 0.010" 0307 PDWC 03250 X XXXX
3.375 +.002/-.000 3.124 +.000/-.002 3.354 +.000/-.002 D = W + 0.010" 0307 PDWC 03375 X XXXX
3.500 +.002/-.000 3.249 +.000/-.002 3.479 +.000/-.002 D = W + 0.010" 0307 PDWC 03500 X XXXX
3.625 +.002/-.000 3.374 +.000/-.002 3.604 +.000/-.002 D = W + 0.010" 0307 PDWC 03625 X XXXX
3.750 +.002/-.000 3.499 +.000/-.002 3.729 +.000/-.002 D = W + 0.010" 0307 PDWC 03750 X XXXX
3.875 +.002/-.000 3.624 +.000/-.002 3.854 +.000/-.002 D = W + 0.010" 0307 PDWC 03875 X XXXX
4.000 +.002/-.000 3.749 +.000/-.002 3.979 +.000/-.002 D = W + 0.010" 0307 PDWC 04000 X XXXX
4.125 +.002/-.000 3.874 +.000/-.002 4.104 +.000/-.002 D = W + 0.010" 0307 PDWC 04125 X XXXX
4.250 +.002/-.000 3.999 +.000/-.002 4.229 +.000/-.002 D = W + 0.010" 0307 PDWC 04250 X XXXX
4.375 +.002/-.000 4.124 +.000/-.002 4.354 +.000/-.002 D = W + 0.010" 0307 PDWC 04375 X XXXX
4.500 +.002/-.000 4.249 +.000/-.002 4.479 +.000/-.002 D = W + 0.010" 0307 PDWC 04500 X XXXX
4.625 +.002/-.000 4.374 +.000/-.002 4.604 +.000/-.002 D = W + 0.010" 0307 PDWC 04625 X XXXX
4.750 +.002/-.000 4.499 +.000/-.002 4.729 +.000/-.002 D = W + 0.010" 0307 PDWC 04750 X XXXX
4.875 +.002/-.000 4.624 +.000/-.002 4.854 +.000/-.002 D = W + 0.010" 0307 PDWC 04875 X XXXX
5.000 +.002/-.000 4.749 +.000/-.002 4.978 +.000/-.002 D = W + 0.010" 0307 PDWC 05000 X XXXX
5.125 +.002/-.000 4.874 +.000/-.002 5.103 +.000/-.002 D = W + 0.010" 0307 PDWC 05125 X XXXX
5.250 +.004/-.000 4.999 +.000/-.003 5.228 +.000/-.003 D = W + 0.010" 0307 PDWC 05250 X XXXX
5.375 +.004/-.000 5.124 +.000/-.003 5.353 +.000/-.003 D = W + 0.010" 0307 PDWC 05375 X XXXX
5.500 +.004/-.000 5.249 +.000/-.003 5.478 +.000/-.003 D = W + 0.010" 0307 PDWC 05500 X XXXX
5.625 +.004/-.000 5.374 +.000/-.003 5.603 +.000/-.003 D = W + 0.010" 0307 PDWC 05625 X XXXX
5.750 +.004/-.000 5.499 +.000/-.003 5.728 +.000/-.003 D = W + 0.010" 0307 PDWC 05750 X XXXX
5.875 +.004/-.000 5.624 +.000/-.003 5.853 +.000/-.003 D = W + 0.010" 0307 PDWC 05875 X XXXX
6.000 +.004/-.000 5.749 +.000/-.003 5.978 +.000/-.003 D = W + 0.010" 0307 PDWC 06000 X XXXX
6.125 +.004/-.000 5.874 +.000/-.003 6.103 +.000/-.003 D = W + 0.010" 0307 PDWC 06125 X XXXX
6.250 +.004/-.000 5.999 +.000/-.003 6.228 +.000/-.003 D = W + 0.010" 0307 PDWC 06250 X XXXX
6.375 +.004/-.000 6.124 +.000/-.003 6.353 +.000/-.003 D = W + 0.010" 0307 PDWC 06375 X XXXX
6.500 +.004/-.000 6.249 +.000/-.003 6.478 +.000/-.003 D = W + 0.010" 0307 PDWC 06500 X XXXX
6.750 +.004/-.000 6.499 +.000/-.003 6.728 +.000/-.003 D = W + 0.010" 0307 PDWC 06750 X XXXX

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 105

WEAR RINGS / BEARINGS GO TO SEC- GOTable
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TION ALOG

PDW Profile
GLAND DIMENSIONS — PDW Profile, Piston — Inch (cont’d)

A B C D
Part Number
Bore Diameter Groove Diameter Piston Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWC

2.000 +.004/-.000 1.749 +.000/-.003 1.979 +.000/-.003 D = W + 0.010" 0307 PDWC 02000 X XXXX
2.125 +.004/-.000 1.874 +.000/-.003 2.104 +.000/-.003 D = W + 0.010" 0307 PDWC 02125 X XXXX
2.250 +.004/-.000 1.999 +.000/-.003 2.229 +.000/-.003 D = W + 0.010" 0307 PDWC 02250 X XXXX
2.375 +.004/-.000 2.124 +.000/-.003 2.354 +.000/-.003 D = W + 0.010" 0307 PDWC 02375 X XXXX
2.500 +.004/-.000 2.249 +.000/-.003 2.479 +.000/-.003 D = W + 0.010" 0307 PDWC 02500 X XXXX
2.625 +.004/-.000 2.374 +.000/-.003 2.604 +.000/-.003 D = W + 0.010" 0307 PDWC 02625 X XXXX
2.750 +.004/-.000 2.499 +.000/-.003 2.729 +.000/-.003 D = W + 0.010" 0307 PDWC 02750 X XXXX
2.875 +.004/-.000 2.624 +.000/-.003 2.854 +.000/-.003 D = W + 0.010" 0307 PDWC 02875 X XXXX
3.000 +.004/-.000 2.749 +.000/-.003 2.979 +.000/-.003 D = W + 0.010" 0307 PDWC 03000 X XXXX
3.125 +.004/-.000 2.874 +.000/-.003 3.104 +.000/-.003 D = W + 0.010" 0307 PDWC 03125 X XXXX
3.250 +.004/-.000 2.999 +.000/-.003 3.229 +.000/-.003 D = W + 0.010" 0307 PDWC 03250 X XXXX
3.375 +.004/-.000 3.124 +.000/-.003 3.354 +.000/-.003 D = W + 0.010" 0307 PDWC 03375 X XXXX
3.500 +.004/-.000 3.249 +.000/-.003 3.479 +.000/-.003 D = W + 0.010" 0307 PDWC 03500 X XXXX
3.625 +.004/-.000 3.374 +.000/-.003 3.604 +.000/-.003 D = W + 0.010" 0307 PDWC 03625 X XXXX
3.750 +.004/-.000 3.499 +.000/-.003 3.729 +.000/-.003 D = W + 0.010" 0307 PDWC 03750 X XXXX
3.875 +.004/-.000 3.624 +.000/-.003 3.854 +.000/-.003 D = W + 0.010" 0307 PDWC 03875 X XXXX
4.000 +.004/-.000 3.749 +.000/-.003 3.979 +.000/-.003 D = W + 0.010" 0307 PDWC 04000 X XXXX
4.125 +.004/-.000 3.874 +.000/-.003 4.104 +.000/-.003 D = W + 0.010" 0307 PDWC 04125 X XXXX
4.250 +.004/-.000 3.999 +.000/-.003 4.229 +.000/-.003 D = W + 0.010" 0307 PDWC 04250 X XXXX
4.375 +.004/-.000 4.124 +.000/-.003 4.354 +.000/-.003 D = W + 0.010" 0307 PDWC 04375 X XXXX
4.500 +.004/-.000 4.249 +.000/-.003 4.479 +.000/-.003 D = W + 0.010" 0307 PDWC 04500 X XXXX
4.625 +.004/-.000 4.374 +.000/-.003 4.604 +.000/-.003 D = W + 0.010" 0307 PDWC 04625 X XXXX
4.750 4.499 4.729 +.000/-.003 D = W + 0.010" 0307 PDWC 04750 X XXXX
4.875 +.002/-.000 4.624 +.000/-.002 4.854 +.000/-.002 D = W + 0.010" 0307 PDWC 04875 X XXXX
5.000 +.002/-.000 4.749 +.000/-.002 4.978 +.000/-.002 D = W + 0.010" 0307 PDWC 05000 X XXXX
5.125 +.002/-.000 4.874 +.000/-.002 5.103 +.000/-.002 D = W + 0.010" 0307 PDWC 05125 X XXXX
5.250 +.004/-.000 4.999 +.000/-.003 5.228 +.000/-.003 D = W + 0.010" 0307 PDWC 05250 X XXXX
5.375 +.004/-.000 5.124 +.000/-.003 5.353 +.000/-.003 D = W + 0.010" 0307 PDWC 05375 X XXXX
5.500 +.004/-.000 5.249 +.000/-.003 5.478 +.000/-.003 D = W + 0.010" 0307 PDWC 05500 X XXXX
5.625 +.004/-.000 5.374 +.000/-.003 5.603 +.000/-.003 D = W + 0.010" 0307 PDWC 05625 X XXXX
5.750 +.004/-.000 5.499 +.000/-.003 5.728 +.000/-.003 D = W + 0.010" 0307 PDWC 05750 X XXXX
5.875 +.004/-.000 5.624 +.000/-.003 5.853 +.000/-.003 D = W + 0.010" 0307 PDWC 05875 X XXXX
6.000 +.004/-.000 5.749 +.000/-.003 5.978 +.000/-.003 D = W + 0.010" 0307 PDWC 06000 X XXXX

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 106

GOTable
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GO TO CATALOG
of Contents
ALOG TION

PDW Profile
GLAND DIMENSIONS — PDW Profile, Rod

0.015 Max. Radius

(Typ. 2 Places)
D

Please refer to the Engineering Section for surface finish and

W additional hardware considerations.
A1 B1 C1

GLAND DIMENSIONS — PDW Profile, Rod — Inch

A B C D
Part Number
Rod Diameter Groove Diameter Throat Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWD

0.312 +.000/-.002 0.437 +.002/-.000 0.333 +.002/-.000 D = W + 0.010" 0307 PDWD 00875 X XXXX

0.375 +.000/-.002 0.500 +.002/-.000 0.396 +.002/-.000 D = W + 0.010" 0307 PDWD 00375 X XXXX

0.437 +.000/-.002 0.562 +.002/-.000 0.458 +.002/-.000 D = W + 0.010" 0307 PDWD 00437 X XXXX

0.500 +.000/-.002 0.625 +.002/-.000 0.521 +.002/-.000 D = W + 0.010" 0307 PDWD 00500 X XXXX

0.562 +.000/-.002 0.687 +.002/-.000 0.583 +.002/-.000 D = W + 0.010" 0307 PDWD 00562 X XXXX

0.625 +.000/-.002 0.750 +.002/-.000 0.646 +.002/-.000 D = W + 0.010" 0307 PDWD 00625 X XXXX

0.687 +.000/-.002 0.812 +.002/-.000 0.708 +.002/-.000 D = W + 0.010" 0307 PDWD 00687 X XXXX

0.750 +.000/-.002 0.875 +.002/-.000 0.771 +.002/-.000 D = W + 0.010" 0307 PDWD 00750 X XXXX

0.812 +.000/-.002 0.937 +.002/-.000 0.833 +.002/-.000 D = W + 0.010" 0307 PDWD 00812 X XXXX

0.875 +.000/-.002 1.000 +.002/-.000 0.896 +.002/-.000 D = W + 0.010" 0307 PDWD 00875 X XXXX

0.937 +.000/-.002 1.062 +.002/-.000 0.958 +.002/-.000 D = W + 0.010" 0307 PDWD 00937 X XXXX

1.000 +.000/-.002 1.125 +.002/-.000 1.021 +.002/-.000 D = W + 0.010" 0307 PDWD 01000 X XXXX

1.062 +.000/-.002 1.187 +.002/-.000 1.083 +.002/-.000 D = W + 0.010" 0307 PDWD 01062 X XXXX

1.125 +.000/-.002 1.250 +.002/-.000 1.146 +.002/-.000 D = W + 0.010" 0307 PDWD 01125 X XXXX

1.187 +.000/-.002 1.312 +.002/-.000 1.208 +.002/-.000 D = W + 0.010" 0307 PDWD 01187 X XXXX

1.250 +.000/-.002 1.375 +.002/-.000 1.271 +.002/-.000 D = W + 0.010" 0307 PDWD 01250 X XXXX

1.312 +.000/-.002 1.437 +.002/-.000 1.333 +.002/-.000 D = W + 0.010" 0307 PDWD 01312 X XXXX

1.375 +.000/-.002 1.500 +.002/-.000 1.396 +.002/-.000 D = W + 0.010" 0307 PDWD 01375 X XXXX

1.437 +.000/-.002 1.562 +.002/-.000 1.458 +.002/-.000 D = W + 0.010" 0307 PDWD 01437 X XXXX

1.500 +.000/-.002 1.625 +.002/-.000 1.521 +.002/-.000 D = W + 0.010" 0307 PDWD 01500 X XXXX

1.625 +.000/-.002 1.750 +.002/-.000 1.646 +.002/-.000 D = W + 0.010" 0307 PDWD 01625 X XXXX

1.750 +.000/-.002 1.875 +.002/-.000 1.771 +.002/-.000 D = W + 0.010" 0307 PDWD 01750 X XXXX

1.875 +.000/-.002 2.000 +.002/-.000 1.896 +.002/-.000 D = W + 0.010" 0307 PDWD 01875 X XXXX

2.000 +.000/-.002 2.125 +.002/-.000 2.021 +.002/-.000 D = W + 0.010" 0307 PDWD 02000 X XXXX

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 107

WEAR RINGS / BEARINGS GO TO SEC- GOTable
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GO TO CATALOG
of Contents
TION ALOG

PDW Profile
GLAND DIMENSIONS — PDW Profile, Rod — Inch (cont'd)
A B C D
Part Number
Rod Diameter Groove Diameter Throat Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWE

1.500 +.000/-.002 1.687 +.002/-.000 1.521 +.002/-.000 D = W + 0.010" 0307 PDWE 01500 X XXXX

1.625 +.000/-.002 1.812 +.002/-.000 1.646 +.002/-.000 D = W + 0.010" 0307 PDWE 01625 X XXXX

1.750 +.000/-.002 1.937 +.002/-.000 1.771 +.002/-.000 D = W + 0.010" 0307 PDWE 01750 X XXXX

1.875 +.000/-.002 2.062 +.002/-.000 1.896 +.002/-.000 D = W + 0.010" 0307 PDWE 01875 X XXXX

2.000 +.000/-.002 2.187 +.002/-.000 2.021 +.002/-.000 D = W + 0.010" 0307 PDWE 02000 X XXXX

2.125 +.000/-.002 2.312 +.002/-.000 2.146 +.002/-.000 D = W + 0.010" 0307 PDWE 02125 X XXXX

2.250 +.000/-.002 2.437 +.002/-.000 2.271 +.002/-.000 D = W + 0.010" 0307 PDWE 02250 X XXXX

2.375 +.000/-.002 2.562 +.002/-.000 2.396 +.002/-.000 D = W + 0.010" 0307 PDWE 02375 X XXXX

2.500 +.000/-.002 2.687 +.002/-.000 2.521 +.002/-.000 D = W + 0.010" 0307 PDWE 02500 X XXXX

2.625 +.000/-.002 2.812 +.002/-.000 2.646 +.002/-.000 D = W + 0.010" 0307 PDWE 02625 X XXXX

2.750 +.000/-.002 2.937 +.002/-.000 2.771 +.002/-.000 D = W + 0.010" 0307 PDWE 02750 X XXXX

2.875 +.000/-.002 3.062 +.002/-.000 2.896 +.002/-.000 D = W + 0.010" 0307 PDWE 02875 X XXXX

3.000 +.000/-.002 3.187 +.002/-.000 3.021 +.002/-.000 D = W + 0.010" 0307 PDWE 03000 X XXXX

3.125 +.000/-.002 3.312 +.002/-.000 3.146 +.002/-.000 D = W + 0.010" 0307 PDWE 03125 X XXXX

3.250 +.000/-.002 3.437 +.002/-.000 3.271 +.002/-.000 D = W + 0.010" 0307 PDWE 03250 X XXXX

3.375 +.000/-.002 3.562 +.002/-.000 3.396 +.002/-.000 D = W + 0.010" 0307 PDWE 03375 X XXXX

3.500 +.000/-.002 3.687 +.002/-.000 3.521 +.002/-.000 D = W + 0.010" 0307 PDWE 03500 X XXXX

3.625 +.000/-.002 3.812 +.002/-.000 3.646 +.002/-.000 D = W + 0.010" 0307 PDWE 03625 X XXXX

3.750 +.000/-.002 3.937 +.002/-.000 3.771 +.002/-.000 D = W + 0.010" 0307 PDWE 03750 X XXXX

3.875 +.000/-.002 4.062 +.002/-.000 3.896 +.002/-.000 D = W + 0.010" 0307 PDWE 03875 X XXXX

4.000 +.000/-.002 4.187 +.002/-.000 4.021 +.002/-.000 D = W + 0.010" 0307 PDWE 04000 X XXXX

4.125 +.000/-.002 4.312 +.002/-.000 4.146 +.002/-.000 D = W + 0.010" 0307 PDWE 04125 X XXXX

4.250 +.000/-.002 4.437 +.002/-.000 4.271 +.002/-.000 D = W + 0.010" 0307 PDWE 04250 X XXXX

4.375 +.000/-.002 4.562 +.002/-.000 4.396 +.002/-.000 D = W + 0.010" 0307 PDWE 04375 X XXXX

4.500 +.000/-.002 4.687 +.002/-.000 4.521 +.002/-.000 D = W + 0.010" 0307 PDWE 04500 X XXXX

4.625 +.000/-.002 4.812 +.002/-.000 4.646 +.002/-.000 D = W + 0.010" 0307 PDWE 04625 X XXXX

4.750 +.000/-.002 4.937 +.002/-.000 4.771 +.002/-.000 D = W + 0.010" 0307 PDWE 04750 X XXXX

4.875 +.000/-.002 5.062 +.002/-.000 4.896 +.002/-.000 D = W + 0.010" 0307 PDWE 04875 X XXXX

5.000 +.000/-.002 5.187 +.002/-.000 5.021 +.002/-.000 D = W + 0.010" 0307 PDWE 05000 X XXXX

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PDW Profile
GLAND DIMENSIONS — PDW Profile, Rod — Inch (cont'd)

A B C D
Part Number
Rod Diameter Groove Diameter Throat Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWF

+.000/- +.002/- +.002/-

1.500 1.751 1.521 D = W + 0.010" 0307 PDWF 01500 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
1.625 1.876 1.646 D = W + 0.010" 0307 PDWF 01625 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
1.750 2.001 1.771 D = W + 0.010" 0307 PDWF 01750 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
1.875 2.126 1.896 D = W + 0.010" 0307 PDWF 01875 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.000 2.251 2.021 D = W + 0.010" 0307 PDWF 02000 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.125 2.376 2.146 D = W + 0.010" 0307 PDWF 02125 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.250 2.501 2.271 D = W + 0.010" 0307 PDWF 02250 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.375 2.626 2.396 D = W + 0.010" 0307 PDWF 02375 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.500 2.751 2.521 D = W + 0.010" 0307 PDWF 02500 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.625 2.876 2.646 D = W + 0.010" 0307 PDWF 02625 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.750 3.001 2.771 D = W + 0.010" 0307 PDWF 02750 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
2.875 3.126 2.896 D = W + 0.010" 0307 PDWF 02875 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.000 3.251 3.021 D = W + 0.010" 0307 PDWF 03000 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.125 3.376 3.146 D = W + 0.010" 0307 PDWF 03125 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.250 3.501 3.271 D = W + 0.010" 0307 PDWF 03250 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.375 3.626 3.396 D = W + 0.010" 0307 PDWF 03375 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.500 3.751 3.521 D = W + 0.010" 0307 PDWF 03500 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.625 3.876 3.646 D = W + 0.010" 0307 PDWF 03625 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.750 4.001 3.771 D = W + 0.010" 0307 PDWF 03750 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
3.875 4.126 3.896 D = W + 0.010" 0307 PDWF 03875 X XXXX
.002 .000 .000
+.000/- +.002/- +.002/-
4.000 4.251 4.021 D = W + 0.010" 0307 PDWF 04000 X XXXX
.002 .000 .000

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ALOG

PDW Profile
GLAND DIMENSIONS — PDW Profile, Rod — Inch (cont'd)

A B C D
Part Number
Rod Diameter Groove Diameter Throat Diameter Groove Width

Dia. Tol. Dia. Tol. Dia. Tol. +.010/-.000 PDWF

+.000/- +.003/- +.003/-

5.125 5.376 5.147 D = W + 0.010" 0307 PDWF 05125 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.250 5.501 5.272 D = W + 0.010" 0307 PDWF 05250 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.375 5.626 5.397 D = W + 0.010" 0307 PDWF 05375 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.500 5.751 5.522 D = W + 0.010" 0307 PDWF 05500 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.625 5.876 5.647 D = W + 0.010" 0307 PDWF 05625 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.750 6.001 5.772 D = W + 0.010" 0307 PDWF 05750 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
5.875 6.126 5.897 D = W + 0.010" 0307 PDWF 05875 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
6.000 6.251 6.022 D = W + 0.010" 0307 PDWF 06000 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
6.250 6.501 6.272 D = W + 0.010" 0307 PDWF 06250 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
6.500 6.751 6.522 D = W + 0.010" 0307 PDWF 06500 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
6.750 7.001 6.772 D = W + 0.010" 0307 PDWF 06750 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
7.000 7.251 7.022 D = W + 0.010" 0307 PDWF 07000 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
7.250 7.501 7.272 D = W + 0.010" 0307 PDWF 07250 X XXXX
.004 .000 .000
+.000/- +.003/- +.003/-
7.500 7.751 7.522 D = W + 0.010" 0307 PDWF 07500 X XXXX
.004 .000 .000

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POLYURETHANE O-RINGS and D-RINGS

Parker proprietary Resilon® 4300 and Resilon® 4301 materials have unique
advantages in comparison to materials for fluid power applications. The physical
characteristics and mechanical properties of these polyurethane-based compounds
deliver performance advantages over traditional elastomers with low compression set and
excellent extrusion resistance.
POLYURETHANE O-RINGS
Parker polyurethane O-rings offer the material advantages exclusive to the Resilon® family of compounds in
standard and custom O-ring sizes. High temperature Resilon® O-rings eliminate the need for back-ups, simplifying
installation and reducing damage due to spiral failure.

POLYURETHANE D-RINGS
Parker’s Resilon® polyurethane D-ring is a one-piece hydraulic valve sealing solution which delivers longer life and
reduced warranty costs over traditional multiple-component seals.

POLYURETHANE PROFILES
Standard
Material
Cross
Profile Description Page
Section

4300
Rugged Resilon® polyurethane O-ring
568 that fits standard dynamic and static • 94
industrial O-ring grooves

One piece, easy-to-install, D-ring for

DG • 104
hydraulic valves

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568 Profile, Resilon® O-ring

Parker’s 568 Profile, Resilon® O-ring delivers longer life and increased performance over traditional rubber O-rings.
Superior mechanical and physical properties of Resilon® 4300 polyurethane deliver performance benefits that include:
• Advanced polyurethane compression set resistance and resilience
• Unmatched polyurethane high temperature capability and wear resistance
• S
 uperior extrusion resistance which eliminates need for back-ups — easing installation and minimizing
damage during installation
• Greater resistance to spiral failure
• Compound Resilon® 4301 offers excellent compatibility in water based fluids.
568 Profile Resilon® polyurethane O-rings match the diameter and cross section of AS568B O-rings and are used
in the same grooves.

RANGE OF APPLICATION
Standard Material Temperature Pressure Speed
P4300A90 -65°F to +275°F 5000 psi < 1.6 ft/s
(-54°C to +135°C) (344 bar) (0.5 m/s)

Additional Material
P4301A90 -35°F to +225°F 5000 psi < 1.6 ft/s
(-37°C to +107°C) (344 bar) (0.5 m/s)

568 Cross Section

• Premium Resilon® material

• Compression set resistant
• Wear-resistant, extrusion resistant
• Eliminates need for back-ups
• Easy, damage-free installation
• Resists spiral failure
• D
 iameter and cross section match
AS568B grooves 568 installed on Cartridge Valve

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568 Profile
PART NUMBER NOMENCLATURE
568 Profile — Inch

4 3 0 0 568 2 - 1 2 8

4 Digit Material Code Profile AS568 O-ring Dash Number

Example: Example:
4300 = Resilon® 4300 2-128 = 1.487" I.D. x 0.103" CS

GLAND DIMENSIONS — 568 Profile — Dynamic

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

DIMENSIONAL DATA — Dynamic O-ring — Inch

Dynamic
Cross Section Squeeze G-Groove Width
H
O-ring L R Max.
Diametral 0 1 2
2-Size Gland Groove Eccentricity
Nominal Actual Actual % Clearance Back-up Back-up Back-up
AS568A Depth Radius (b)
(a) Ring Ring Ring
006 .055 .010 15 .002 .093 .138 .205 .005
.070
through 1/16 to to to to to to to to .002
±.003
012 .057 .018 25 .005 .098 .143 .210 .015
104 .088 .01 10 .002 .140 .171 .238 .005
.103
through 3/32 to to to to to to to to .002
±.003
1116 .090 .018 17 .005 .145 .176 .243 .015
201 .121 .012 9 .003 .187 .208 .275 .010
.139
through 1/8 to to to to to to to to .003
±.004
222 .123 .022 16 .006 .192 .213 .280 .025
309 .185 .017 8 .003 .281 .311 .410 .020
.210
through 3/16 to to to to to to to to .004
±.005
349 .188 .030 14 .006 .286 .316 .415 .035
425 .237 .029 11 .004 .375 .408 .538 .020
.275
through 1/4 to to to to to to to to .005
±.006
460 .240 .044 16 .007 .380 .413 .543 .035

(a) Clearance (extrusion gap) must be held to a minimum consistent with design requirements for temperature range variation.
(b) Total indicator reading between groove and adjacent bearing surface.
NOTE: For sizes larger than those shown in the table, please contact your local Parker seal representative.

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568 Profile
GLAND DIMENSIONS — Dynamic O-ring — Inch
Seal Dimensions Hardware Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Bore Groove Piston Rod Groove Throat
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.002/- +.000/- +.000/- +.000/- +.002/- +.001/-
.000 .002 .001 .002 .000 .000
010 0.239 0.005 0.070 0.003 0.379 0.374 0.264 0.372 0.249 0.359 0.251 43005682-010

011 0.301 0.005 0.070 0.003 0.441 0.436 0.326 0.434 0.311 0.421 0.313 43005682-011

012 0.364 0.005 0.070 0.003 0.504 0.499 0.389 0.497 0.374 0.484 0.376 43005682-012

107 0.206 0.005 0.103 0.003 0.412 0.406 0.230 0.404 0.218 0.394 0.220 43005682-107

109 0.299 0.005 0.103 0.003 0.505 0.499 0.323 0.497 0.311 0.487 0.313 43005682-109

110 0.362 0.005 0.103 0.003 0.568 0.562 0.386 0.560 0.374 0.550 0.376 43005682-110

111 0.424 0.005 0.103 0.003 0.630 0.624 0.448 0.622 0.436 0.612 0.438 43005682-111

112 0.487 0.005 0.103 0.003 0.693 0.687 0.511 0.685 0.499 0.675 0.501 43005682-112

113 0.549 0.007 0.103 0.003 0.755 0.749 0.573 0.747 0.561 0.737 0.563 43005682-113

114 0.612 0.009 0.103 0.003 0.818 0.812 0.636 0.810 0.624 0.800 0.626 43005682-114

115 0.674 0.009 0.103 0.003 0.880 0.874 0.698 0.872 0.686 0.862 0.688 43005682-115

116 0.737 0.009 0.103 0.003 0.943 0.937 0.761 0.935 0.749 0.925 0.751 43005682-116

203 0.296 0.005 0.103 0.004 0.574 0.562 0.320 0.559 0.310 0.552 0.313 43005682-203

206 0.484 0.005 0.103 0.004 0.762 0.750 0.508 0.747 0.498 0.740 0.501 43005682-206

208 0.609 0.009 0.103 0.004 0.887 0.875 0.633 0.872 0.623 0.865 0.626 43005682-208

210 0.734 0.010 0.103 0.004 1.012 1.000 0.758 0.997 0.748 0.990 0.751 43005682-210

211 0.796 0.010 0.139 0.004 1.074 1.062 0.820 1.059 0.810 1.052 0.813 43005682-211

212 0.859 0.010 0.139 0.004 1.137 1.125 0.883 1.122 0.873 1.115 0.876 43005682-212

214 0.984 0.010 0.139 0.004 1.262 1.250 1.008 1.247 0.998 1.240 1.001 43005682-214

215 1.046 0.010 0.139 0.004 1.324 1.312 1.070 1.309 1.060 1.302 1.063 43005682-215

216 1.109 0.012 0.139 0.004 1.387 1.375 1.133 1.372 1.123 1.365 1.126 43005682-216

217 1.171 0.012 0.139 0.004 1.449 1.437 1.195 1.434 1.185 1.427 1.188 43005682-217

218 1.234 0.012 0.139 0.004 1.512 1.500 1.258 1.497 1.248 1.490 1.251 43005682-218

219 1.296 0.012 0.139 0.004 1.574 1.562 1.320 1.559 1.310 1.552 1.313 43005682-219

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece
piston.
NOTE: For sizes larger than those shown in the table, please contact your local Parker seal representative.

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568 Profile
GLAND DIMENSIONS — Dynamic O-ring — Inch (cont’d)
Seal Dimensions Hardware Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Bore Groove Piston Rod Groove Throat
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.002/- +.000/- +.000/- +.000/- +.002/- +.001/-
.000 .002 .001 .002 .000 .000
220 1.359 0.012 0.139 0.004 1.637 1.625 1.383 1.622 1.373 1.615 1.376 43005682-220

221 1.421 0.012 0.139 0.004 1.699 1.687 1.445 1.684 1.435 1.677 1.438 43005682-221
1.762
222 1.484 0.015 0.139 0.004 1.750 1.508 1.747 1.498 1.740 1.501 43005682-222
1.27
316 0.850 0.010 0.210 0.005 1.270 1.250 0.880 1.247 0.873 1.243 0.876 43005682-316

321 1.162 0.012 0.210 0.005 1.582 1.562 1.192 1.559 1.185 1.555 1.188 43005682-321

323 1.287 0.012 0.210 0.005 1.707 1.687 1.317 1.684 1.310 1.680 1.313 43005682-323

324 1.350 0.012 0.210 0.005 1.770 1.750 1.380 1.747 1.373 1.743 1.376 43005682-324

325 1.475 0.015 0.210 0.005 1.895 1.875 1.505 1.872 1.498 1.868 1.501 43005682-325

326 1.600 0.015 0.210 0.005 2.020 2.000 1.630 1.997 1.623 1.993 1.626 43005682-325

327 1.725 0.015 0.210 0.005 2.145 2.125 1.755 2.122 1.748 2.118 1.751 43005682-327

328 1.850 0.015 0.210 0.005 2.270 2.250 1.880 2.247 1.873 2.243 1.876 43005682-327

329 1.975 0.018 0.210 0.005 2.395 2.375 2.005 2.372 1.998 2.368 2.001 43005682-329

337 2.975 0.024 0.210 0.005 3.395 2.375 3.005 3.372 2.998 3.368 3.001 43005682-337

425 4.475 0.033 0.275 0.006 5.025 5.002 4.528 4.998 4.497 4.971 4.501 43005682-425

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece
piston.
NOTE: For sizes larger than those shown in the table, please contact your local Parker seal representative.

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568 Profile
GLAND DIMENSIONS — 568 Profile — Static

Please refer to the Engineering Section

for surface finish and additional hardware
considerations.

DIMENSIONAL DATA — Static O-ring — Inch

Static
Cross Section Squeeze G-Groove Width
H
O-ring L R Max.
Diametral 0 1 2
2-Size Gland Groove Eccentricity
Nominal Actual Actual % Clearance Back-up Back-up Back-up
AS568 Depth Radius (b)
(a) Ring Ring Ring
004 0.050 0.015 22 0.002 0.093 0.138 0.205 0.005
0.070
through 1/16 to to to to to to to to 0.002
±0.003
050 0.052 0.023 32 0.005 0.098 0.143 0.210 0.015
102 0.081 0.017 17 0.002 0.140 0.171 0.238 0.005
.103
through 3/32 to to to to to to to to 0.002
±0.003
178 0.083 0.025 24 0.005 0.145 0.176 0.243 0.015
201 0.111 0.022 16 0.003 0.187 0.208 0.275 0.010
.139
through 1/8 to to to to to to to to 0.003
±0.004
284 0.113 0.032 23 0.006 0.192 0.213 0.280 0.025
309 0.170 0.032 15 0.003 0.281 0.311 0.410 0.020
.210
through 3/16 to to to to to to to to 0.004
±0.005
395 0.173 0.045 21 0.006 0.286 0.316 0.415 0.035
425 0.226 0.040 15 0.004 0.375 0.408 0.538 0.020
.275
through 1/4 to to to to to to to to 0.005
±0.006
475 0.229 0.055 20 0.007 0.380 0.413 0.543 0.035

(a) Clearance (extrusion gap) must be held to a minimum consistent with design requirements for temperature range variation.
(b) Total indicator reading between groove and adjacent bearing surface.
NOTE: For sizes larger than those shown in the table, please contact your local Parker seal representative.

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ALOG TION

568 Profile
GLAND DIMENSIONS — 568 Static O-ring — Inch
Seal Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Piston Bore Groove Rod Throat Groove
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.000/- +.000/- +.001/- +.002/-
0 0
.002 .002 .000 .000
010 0.239 0.005 0.070 0.003 0.379 0.373 0.375 0.275 0.250 0.252 0.350 43005682-010
011 0.301 0.005 0.070 0.003 0.441 0.435 0.437 0.337 0.312 0.314 0.412 43005682-011
012 0.364 0.005 0.070 0.003 0.504 0.498 0.500 0.400 0.375 0.377 0.475 43005682-012
013 0.426 0.005 0.070 0.003 0.566 0.560 0.562 0.462 0.437 0.439 0.537 43005682-013
014 0.489 0.005 0.070 0.003 0.629 0.623 0.625 0.525 0.500 0.502 0.600 43005682-014
015 0.551 0.007 0.070 0.003 0.691 0.685 0.687 0.587 0.562 0.564 0.662 43005682-015
016 0.614 0.009 0.070 0.003 0.754 0.748 0.750 0.650 0.625 0.627 0.725 43005682-016
017 0.676 0.009 0.070 0.003 0.816 0.810 0.812 0.712 0.687 0.689 0.787 43005682-017
018 0.739 0.009 0.070 0.003 0.879 0.873 0.875 0.775 0.750 0.752 0.850 43005682-018
019 0.801 0.009 0.070 0.003 0.941 0.935 0.937 0.837 0.812 0.812 0.912 43005682-019
020 0.864 0.009 0.070 0.003 1.004 0.998 1.000 0.900 0.875 0.877 0.975 43005682-020
021 0.926 0.009 0.070 0.003 1.066 1.060 1.062 0.962 0.937 0.939 1.037 43005682-021
022 0.989 0.010 0.070 0.003 1.129 1.123 1.125 1.025 1.000 1.002 1.100 43005682-022
023 1.051 0.010 0.070 0.003 1.191 1.185 1.187 1.087 1.062 1.064 1.162 43005682-023
024 1.114 0.010 0.070 0.003 1.254 1.248 1.250 1.150 1.125 1.127 1.225 43005682-024
025 1.176 0.011 0.070 0.003 1.316 1.310 1.312 1.212 1.187 1.189 1.287 43005682-025
026 1.239 0.011 0.070 0.003 1.379 1.373 1.375 1.275 1.250 1.252 1.350 43005682-026
027 1.301 0.011 0.070 0.003 1.441 1.435 1.437 1.337 1.312 1.314 1.412 43005682-027
028 1.364 0.013 0.070 0.003 1.504 1.498 1.500 1.400 1.375 1.377 1.475 43005682-028
030 1.614 0.013 0.070 0.003 1.754 1.748 1.750 1.650 1.625 1.627 1.725 43005682-030
031 1.739 0.015 0.070 0.003 1.879 1.873 1.875 1.775 1.750 1.752 1.850 43005682-031
032 1.864 0.015 0.070 0.003 2.004 1.998 2.000 1.900 1.875 1.877 1.975 43005682-032

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece piston.

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Table
Table
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Contents
Contents
TION ALOG

568 Profile
GLAND DIMENSIONS — 568 Static O-ring — Inch (Cont’d)
Seal Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Piston Bore Groove Rod Throat Groove
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.000/- +.002/- +.000/- +.000/- +.001/- +.002/-
.001 .000 .002 .002 .000 .000
040 2.864 0.020 0.070 0.003 3.004 2.998 3.000 2.900 2.875 2.877 2.975 43005682-040
105 0.143 0.005 0.103 0.003 0.349 0.340 0.342 0.180 0.156 0.158 0.318 43005682-105
107 0.206 0.005 0.103 0.003 0.412 0.403 0.405 0.243 0.219 0.221 0.381 43005682-107
109 0.299 0.005 0.103 0.003 0.505 0.498 0.500 0.338 0.312 0.314 0.474 43005682-109
110 0.362 0.005 0.103 0.003 0.568 0.560 0.562 0.400 0.375 0.377 0.537 43005682-110
111 0.424 0.005 0.103 0.003 0.630 0.623 0.625 0.463 0.437 0.439 0.599 43005682-111
112 0.487 0.005 0.103 0.003 0.693 0.685 0.687 0.525 0.500 0.502 0.662 43005682-112
113 0.549 0.007 0.103 0.003 0.755 0.748 0.750 0.588 0.562 0.564 0.724 43005682-113
114 0.612 0.009 0.103 0.003 0.818 0.810 0.812 0.650 0.625 0.627 0.787 43005682-114
115 0.674 0.009 0.103 0.003 0.880 0.873 0.875 0.713 0.687 0.689 0.849 43005682-115
116 0.737 0.009 0.103 0.003 0.943 0.935 0.937 0.775 0.750 0.752 0.912 43005682-116
117 0.799 0.010 0.103 0.003 1.005 .998 1.000 0.838 0.812 0.814 0.974 43005682-117
118 0.862 0.010 0.103 0.003 1.068 1.060 1.062 0.900 0.875 0.877 1.037 43005682-118
119 0.924 0.010 0.103 0.003 1.130 1.123 1.125 0.963 0.937 0.939 1.099 43005682-119
120 0.987 0.010 0.103 0.003 1.193 1.185 1.187 1.025 1.000 1.002 1.162 43005682-120
121 1.049 0.010 0.103 0.003 1.255 1.248 1.250 1.088 1.062 1.064 1.224 43005682-121
122 1.112 0.010 0.103 0.003 1.318 1.310 1.312 1.150 1.125 1.127 1.287 43005682-122
123 1.174 0.012 0.103 0.003 1.380 1.373 1.375 1.213 1.187 1.189 1.349 43005682-123
124 1.237 0.012 0.103 0.003 1.443 1.435 1.437 1.275 1.250 1.252 1.412 43005682-124
125 1.299 0.012 0.103 0.003 1.505 1.498 1.500 1.338 1.312 1.314 1.474 43005682-125
127 1.424 0.012 0.103 0.003 1.630 1.623 1.625 1.463 1.437 1.439 1.599 43005682-127
128 1.487 0.012 0.103 0.003 1.693 1.685 1.687 1.525 1.500 1.502 1.662 43005682-128
129 1.549 0.015 0.103 0.003 1.755 1.748 1.750 1.588 1.562 1.564 1.724 43005682-129
130 1.612 0.015 0.103 0.003 1.818 1.810 1.812 1.650 1.625 1.627 1.787 43005682-130
131 1.674 0.015 0.103 0.003 1.880 1.873 1.875 1.713 1.687 1.689 1.849 43005682-131
132 1.737 0.015 0.103 0.003 1.943 1.935 1.937 1.775 1.750 1.752 1.912 43005682-132
133 1.799 0.015 0.103 0.003 2.005 1.998 2.000 1.838 1.812 1.814 1.974 43005682-133
134 1.862 0.015 0.103 0.003 2.068 2.060 2.062 1.900 1.875 1.877 2.037 43005682-134

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece piston.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 118

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568 Profile
GLAND DIMENSIONS — 568 Static O-ring — Inch (Cont’d)
Seal Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Piston Bore Groove Rod Throat Groove
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.000/- +.002/- +.000/- +.000/- +.001/- +.002/-
.001 .000 .002 .002 .000 .000
135 1.925 0.017 0.103 0.003 2.131 2.123 2.125 1.963 1.997 1.939 2.099 43005682-135
136 1.987 0.017 0.103 0.003 2.193 2.185 2.187 2.025 2.000 2.002 2.162 43005682-136
137 2.050 0.017 0.103 0.003 2.256 2.248 2.250 2.088 2.062 2.064 2.224 43005682-137
139 2.175 0.017 0.103 0.003 2.381 2.373 2.375 2.213 2.187 2.189 2.349 43005682-139
140 2.237 0.017 0.103 0.003 2.443 2.435 2.437 2.275 2.250 2.252 2.412 43005682-140
142 2.362 0.020 0.103 0.003 2.568 2.560 2.562 2.400 2.375 2.377 2.537 43005682-142
143 2.425 0.020 0.103 0.003 2.631 2.623 2.625 2.463 2.437 2.439 2.599 43005682-143
144 2.487 0.020 0.103 0.003 2.693 2.685 2.687 2.525 2.500 2.502 2.662 43005682-144
147 2.675 0.022 0.103 0.003 2.881 2.873 2.875 2.713 2.687 2.689 2.849 43005682-147
148 2.737 0.022 0.103 0.003 2.943 2.935 2.937 2.775 2.750 2.752 2.912 43005682-148
150 2.862 0.022 0.103 0.003 3.068 3.060 3.062 2.900 2.875 2.877 3.037 43005682-150
151 2.987 0.024 0.103 0.003 3.193 3.185 3.187 3.025 3.000 3.002 3.162 43005682-151
152 3.237 0.024 0.103 0.003 3.443 3.435 3.437 3.275 3.250 3.252 3.412 43005682-152
153 3.487 0.024 0.103 0.003 3.693 3.685 3.687 3.525 3.500 3.502 3.662 43005682-153
154 3.737 0.028 0.103 0.003 3.943 3.935 3.937 3.775 3.750 3.752 3.912 43005682-154
155 3.987 0.028 0.103 0.003 4.193 4.185 4.187 4.025 4.000 4.002 4.162 43005682-155
156 4.237 0.030 0.103 0.003 4.443 4.435 4.437 4.275 4.250 4.252 4.412 43005682-156
203 0.296 0.005 0.139 0.004 0.574 0.559 0.562 0.340 0.312 0.315 0.534 43005682-203
206 0.484 0.005 0.139 0.004 0.762 0.747 0.750 0.528 0.500 0.503 0.722 43005682-206
208 0.609 0.009 0.139 0.004 0.887 0.872 0.875 0.653 0.625 0.628 0.847 43005682-208
210 0.734 0.010 0.139 0.004 1.012 0.997 1.000 0.778 0.750 0.753 0.972 43005682-210
211 0.796 0.010 0.139 0.004 1.074 1.059 1.062 0.840 0.812 0.815 1.034 43005682-211
212 0.859 0.010 0.139 0.004 1.137 1.122 1.125 0.903 0.875 0.878 1.097 43005682-212
214 0.984 0.010 0.139 0.004 1.262 1.247 1.250 1.028 1.000 1.003 1.222 43005682-214
215 1.046 0.010 0.139 0.004 1.324 1.309 1.312 1.090 1.062 1.065 1.284 43005682-215
216 1.109 0.012 0.139 0.004 1.387 1.372 1.375 1.153 1.125 1.128 1.347 43005682-216
217 1.171 0.012 0.139 0.004 1.449 1.434 1.437 1.215 1.187 1.190 1.409 43005682-217
218 1.234 0.012 0.139 0.004 1.512 1.497 1.500 1.278 1.250 1.253 1.472 43005682-218

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece piston.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 119

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568 Profile
GLAND DIMENSIONS — 568 Static O-ring — Inch (Cont’d)

Seal Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Piston Bore Groove Rod Throat Groove
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.000/- +.002/- +.000/- +.000/- +.001/- +.002/-
.001 .000 .002 .002 .000 .000
219 1.296 0.012 0.139 0.004 1.574 1.559 1.562 1.340 1.312 1.315 1.534 43005682-219

220 1.359 0.012 0.139 0.004 1.637 1.622 1.625 1.403 1.375 1.378 1.597 43005682-220

43005682-221
221 1.421 0.012 0.139 0.004 1.699 1.684 1.687 1.465 1.437 1.440 1.659
43005682-222

222 1.484 0.015 0.139 0.004 1.762 1.747 1.750 1.528 1.500 1.503 1.722 43005682-222

223 1.609 0.015 0.139 0.004 1.887 1.872 1.875 1.653 1.625 1.628 1.847 43005682-223

224 1.734 0.015 0.139 0.004 2.012 1.997 2.000 1.778 1.750 1.753 1.972 43005682-224

225 1.859 0.015 0.139 0.004 2.137 2.122 2.125 1.903 1.875 1.878 2.097 43005682-225

226 1.984 0.018 0.139 0.004 2.262 2.247 2.250 2.028 2.000 2.003 2.222 43005682-226

227 2.109 0.018 0.139 0.004 2.387 2.372 2.375 2.153 2.125 2.128 2.347 43005682-227

228 2.234 0.020 0.139 0.004 2.512 2.497 2.500 2.278 2.250 2.253 2.472 43005682-228

229 2.359 0.020 0.139 0.004 2.637 2.622 2.625 2.403 2.375 2.378 2.597 43005682-229

230 2.484 0.020 0.139 0.004 2.762 2.747 2.750 2.528 2.500 2.503 2.722 43005682-230

231 2.609 0.020 0.139 0.004 2.887 2.872 2.875 2.653 2.625 2.628 2.847 43005682-231

232 2.734 0.024 0.139 0.004 3.012 2.997 3.000 2.778 2.75 2.753 2.972 43005682-232

233 2.859 0.024 0.139 0.004 3.137 3.122 3.125 2.903 2.875 2.878 3.097 43005682-233

234 2.984 0.024 0.139 0.004 3.262 3.247 3.250 3.028 3.000 3.003 3.222 43005682-234

235 3.109 0.024 0.139 0.004 3.387 3.372 3.375 3.153 3.125 3.128 3.253 3.347 43005682-235

236 3.234 0.024 0.139 0.004 3.512 3.497 3.500 3.278 3.250 3.253 3.472 43005682-236

237 3.359 0.024 0.139 0.004 3.637 3.622 3.625 3.403 3.375 3.378 3.597 43005682-237

238 3.484 0.024 0.139 0.004 3.762 3.747 3.750 3.528 3.500 3.503 3.722 43005682-238

239 3.609 0.028 0.139 0.004 3.887 3.872 3.875 3.653 3.625 3.628 3.847 43005682-239

240 3.734 0.028 0.139 0.004 4.012 3.997 4.000 3.778 3.750 3.753 3.972 43005682-240

242 3.984 0.028 0.139 0.004 4.262 4.247 4.250 4.028 4.000 4.003 4.222 43005682-242

243 4.109 0.028 0.139 0.004 4.387 4.372 4.375 4.153 4.125 4.128 4.347 43005682-243

244 4.234 0.030 0.139 0.004 4.512 4.497 4.500 4.278 4.250 4.253 4.472 43005682-244

245 4.359 0.030 0.139 0.004 4.637 4.622 4.625 4.403 4.375 4.378 4.597 43005682-245

246 4.484 0.030 0.139 0.004 4.762 4.747 4.750 4.528 4.500 4.503 4.722 43005682-246

247 4.609 0.030 0.139 0.004 4.887 4.872 4.875 4.653 4.625 4.628 4.847 43005682-247

248 4.734 0.030 0.139 0.004 5.012 4.997 5.000 4.778 4.750 4.753 4.972 43005682-248

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece piston.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 120

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POLYURETHANE O-RINGS and D-RINGS

568 Profile
GLAND DIMENSIONS — 568 Static O-ring — Inch (Cont’d)

Seal Dimensions

Piston Rod
O-ring Part
2-Size Mean A B C D E F Number
AS568 Inside
± Width ± O.D. Piston Bore Groove Rod Throat Groove
Dia.
(Ref) Dia. Dia. Dia. Dia. Dia. Dia.
+.000/- +.002/- +.000/- +.000/- +.001/- +.004/-
.001 .000 .004 .002 .000 .000
250 4.984 0.035 0.139 0.004 5.262 5.247 5.250 5.028 5.000 5.003 5.222 43005682-250
251 5.109 0.035 0.139 0.004 5.387 5.372 5.375 5.153 5.125 5.128 5.347 43005682-251
254 5.484 0.035 0.139 0.004 5.762 5.747 5.750 5.528 5.500 5.503 5.722 43005682-254
255 5.609 0.035 0.139 0.004 5.887 5.872 5.875 5.653 5.625 5.628 5.847 43005682-255
258 5.984 0.035 0.139 0.004 6.262 6.247 6.250 6.028 6.000 6.003 6.222 43005682-258
259 6.234 0.040 0.139 0.004 6.512 6.497 6.500 6.278 6.250 6.253 6.472 43005682-259
260 6.484 0.040 0.139 0.004 6.762 6.747 6.750 6.528 6.500 6.503 6.722 43005682-260
264 7.484 0.045 0.139 0.004 7.762 7.747 7.750 7.528 7.500 7.503 7.722 43005682-264
316 0.850 0.010 0.210 0.005 1.270 1.247 1.250 0.910 0.875 0.878 1.215 43005682-316
321 1.162 0.012 0.210 0.005 1.582 1.559 1.562 1.222 1.187 1.190 1.527 43005682-321
323 1.287 0.012 0.210 0.005 1.707 1.684 1.687 1.347 1.312 1.315 1.652 43005682-323
324 1.350 0.012 0.210 0.005 1.770 1.747 1.750 1.410 1.375 1.378 1.715 43005682-324
325 1.475 0.015 0.210 0.005 1.895 1.872 1.875 1.535 1.500 1.503 1.840 43005682-325
326 1.600 0.015 0.210 0.005 2.020 1.997 2.000 1.660 1.625 1.628 1.965 43005682-326
327 1.725 0.015 0.210 0.005 2.145 2.122 2.125 1.785 1.750 1.753 2.090 43005682-327
328 1.850 0.015 0.210 0.005 2.270 2.247 2.250 1.910 1.875 1.878 2.215 43005682-328
329 1.975 0.018 0.210 0.005 2.395 2.372 2.375 2.035 2.000 2.003 2.340 43005682-329
337 1.975 0.024 0.210 0.005 3.395 3.372 3.375 3.035 3.000 3.003 3.340 43005682-337
358 5.60 0.037 0.210 0.005 6.020 5.997 6.000 5.660 5.625 5.628 5.965 43005682-358
425 4.475 0.033 0.275 0.006 5.025 4.996 5.000 4.548 4.500 4.504 4.952 43005682-425

O-ring Seal Dimensions

2-Size
AS5202
& Mean Piston / Rod Hardware Dimensions Part
Inside
J1926 ± Width ± O.D. Number
Dia.
Bosses (Ref)

904 0.351 0.005 0.072 0.003 0.495 43005683-904

905 0.414 0.005 0.072 0.003 0.558 43005683-905
906 0.468 0.005 0.078 0.003 0.624 43005683-906
Refer to external specs
908 0.644 0.009 0.087 0.003 0.818 AS5202 & SAE J1926 43005683-908
for boss seal hardware dimensions
910 0.755 0.009 0.097 0.003 0.949 43005683-910
912 0.924 0.009 0.116 0.004 1.156 43005683-912
916 1.171 0.010 0.119 0.004 1.409 43005683-916

Piston O.D.s shown in the darker-shaded areas may over stretch the O-ring. If so, select a material with greater elongation or use a two-piece piston.

Engineered Polymer Systems Division | 1-800-233-3900 | www.parker.com/eps 121

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TION ALOG

DG Profile, Resilon® Polyurethane D-ring

Parker’s DG Profile Resilon® polyurethane D-ring is a problem solver featuring a variety of design advantages.
The molded “D” shape, which is higher in the middle and lower on the ends, provides sealing in critical areas
while reducing the chance of a seal being cut during installation. Its sealing lip contact footprint is minimized, thus
reducing the amount of friction between seal and bore while providing expected sealing performance. The “D” shape
is symmetrical so there is no performance degradation as the valve cycles in the reverse direction nor concern of
backward installation of the seal. The design also incorporates “pressure pedestals” to eliminate the potential for
“blow-by,” common in reverse cycling.

RANGE OF APPLICATION
Standard Material Temperature Pressure Speed
P4300A90 -65°F to +275°F 5000 psi < 1.6 ft/s
(-54°C to +135°C) (344 bar) (0.5 m/s)

Additional Material
P4301A90 -35°F to +225°F 5000 psi < 1.6 ft/s
(-37°C to +107°C) (344 bar) (0.5 m/s)

DG Profile Cross Section

• Premium, compression-set
resistant Resilon® material
• Minimized contact footprint
• Excellent sealing performance
• Extrusion resistant material
• Eliminates need for back-ups
• E
 asy, mistake-proof/damage-free
installation
• P
 ressure pedestals eliminate “blow-
by” DG installed in Gland
• Fit industrial O-ring grooves
• Eliminates spiral failure

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ALOG TION

DG Profile
PART NUMBER NOMENCLATURE
DG Profile — Inch

4 3 0 0 DG 1 2 – 0 1 4

4 Digit Material Code Profile Groove Width

Example: (0, 1, or 2
4300 = Resilon® 4300 back-up rings)

O-ring Dash Number

Example: 2-014 = .514" I.D. x .070" CS

GLAND DIMENSIONS —DG Profile

Please refer to the Engineering Section for surface finish and

additional hardware considerations.

GLAND DIMENSIONS — DG Profile — Inch

C1
O-ring A B D
Groove Width
2-Size Bore Diameter Groove Diameter Piston Diameter Part Number
One Back-up
AS568A

Dia. Tol. Dia. Tol. +.005/-.000 Dia. Tol.

010 0.374 +.002/- 0.264 +.000/- 0.138 0.372 +.000/- 4300DG12-010
.000 .002 .001
011 0.436 +.002/- 0.326 +.000/- 0.138 0.434 +.000/- 4300DG12-011
.000 .002 .001
012 0.499 +.002/- 0.389 +.000/- 0.138 0.497 +.000/- 4300DG12-012
.000 .002 .001
013 0.561 +.002/- 0.451 +.000/- 0.138 0.559 +.000/- 4300DG12-013
.000 .002 .001
014 0.624 +.002/- 0.514 +.000/- 0.138 0.622 +.000/- 4300DG12-014
.000 .002 .001
015 0.686 +.002/- 0.576 +.000/- 0.138 0.684 +.000/- 4300DG12-015
.000 .002 .001
016 0.749 +.002/- 0.639 +.000/- 0.138 0.747 +.000/- 4300DG12-016
.000 .002 .001

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The items described in this document are hereby offered for sale by Parker Hannifin
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8. CONFIDENTIAL INFORMATION. Buyer acknowledges and agrees instructions, guides or specifications, or Buyer otherwise fails to
that any technical, commercial, or other confidential comply with Seller’s instructions, guides and specifications, Buyer
information of Seller, including, without limitation, pricing, acknowledges that any such use, resale, or non-compliance is at
technical drawings or prints and/or part lists, which has been Buyer’s sole risk. Further, Buyer shall indemnify, defend, and hold
or will be disclosed, delivered or made available, whether Seller harmless from any losses, claims, liabilities, damages, lawsuits,
directly or indirectly, to Buyer (“Confidential Information”), has judgments and costs (including attorney fees and defense costs),
been and will be received in confidence and will remain the whether for personal injury, property damage, intellectual property
property of Seller. Buyer further agrees that it will not use Seller’s infringement or any other claim, arising out of or in connection with:
Confidential Information for any purpose other than for the benefit (a) improper selection, design, specification, application, or any
of Seller. misuse of Products; (b) any act or omission, negligent or otherwise, of
Buyer; (c) Seller’s use of patterns, tools, equipment, plans, drawings,
9. LOSS TO BUYER’S PROPERTY. Any tools, patterns, materials, designs, specifications or other information or things furnished by
equipment or information furnished by Buyer or which are or become Buyer; (d) damage to the Products from an external cause, repair
Buyer’s property (“Buyer’s Property”), will be considered obsolete or attempted repair by anyone other than Seller, failure to follow
and may be destroyed by Seller after two (2) consecutive years have instructions, guides and specifications provided by Seller, use with
elapsed without Buyer ordering the Products manufactured using goods not provided by Seller, or opening, modifying, deconstructing,
Buyer’s Property. Furthermore, Seller shall not be responsible for any tampering with or repackaging the Products; or (e) Buyer’s failure to
loss or damage to Buyer’s Property while it is in Seller’s possession comply with these Terms. Seller shall not indemnify Buyer under any
or control. circumstance except as otherwise provided in these Terms.

10. SPECIAL TOOLING. “Special Tooling” includes but is not limited 14. CANCELLATIONS AND CHANGES. Buyer may not cancel or
to tools, jigs, fixtures and associated manufacturing equipment modify, including but not limited to movement of delivery dates for
acquired or necessary to manufacture Goods. Seller may impose a the Products, any order for any reason except with Seller’s written
tooling charge for any Special Tooling. Such Special Tooling shall be consent and upon terms that will indemnify, defend and hold Seller
and remain Seller’s property notwithstanding payment of any charges harmless against all direct, incidental and consequential loss or
by Buyer. In no event will Buyer acquire any interest in the Special damage and any additional expense. Seller, at any time, may change
Tooling, even if such Special Tooling has been specially converted or features, specifications, designs and availability of Products.
adapted for manufacture of Goods for Buyer and notwithstanding any
charges paid by Buyer. Unless otherwise agreed, Seller has the right 15. LIMITATION ON ASSIGNMENT. Buyer may not assign its
to alter, discard or otherwise dispose of any Special Tooling or other rights or obligations without the prior written consent of Seller.
property owned by Seller in its sole discretion at any time.
16. FORCE MAJEURE. Seller is not liable for delay or failure to
11. SECURITY INTEREST. To secure payment of all sums due perform any of its obligations by reason of events or circumstances
from Buyer, Seller retains a security interest in all Products delivered beyond its reasonable control. Such circumstances include without
to Buyer and, Buyer’s acceptance of these Terms is deemed to be limitation: accidents, labor disputes or stoppages, government acts
a Security Agreement under the Uniform Commercial Code. Buyer or orders, acts of nature, pandemics, epidemics, other widespread
authorizes Seller as its attorney to execute and file on Buyer’s behalf illness, or public health emergency, delays or failures in delivery
all documents Seller deems necessary to perfect Seller’s security from carriers or suppliers, shortages of materials, war (whether
interest. declared or not) or the serious threat of same, riots, rebellions, acts
of terrorism, fire or any reason whether similar to the foregoing or
12. USER RESPONSIBILITY. Buyer, through its own analysis otherwise. Seller will resume performance as soon as practicable
and testing, is solely responsible for making the final selection after the event of force majeure has been removed. All delivery dates
of the Products and assuring that all performance, endurance, affected by force majeure shall be tolled for the duration of such
maintenance, safety and warning requirements of the application of force majeure and rescheduled for mutually agreed dates as soon as
the Products are met. Buyer must analyze all aspects of the application practicable after the force majeure condition ceases to exist. Force
and follow applicable industry standards, specifications, and any majeure shall not include financial distress, insolvency, bankruptcy,
technical information provided with the Quote or the Products, such or other similar conditions affecting one of the parties, affiliates and/
as Seller’s instructions, guides and specifications. If Seller provides or sub-contractors.
options of or for Products based upon data or specifications provided
by Buyer, Buyer is responsible for determining that such data and 17. WAIVER AND SEVERABILITY. Failure to enforce any provision
specifications are suitable and sufficient for all applications and of these Terms will not invalidate that provision; nor will any such
reasonably foreseeable uses of the Products. In the event Buyer is failure prejudice either party’s right to enforce that provision in the
not the end-user of the Products, Buyer will ensure such end-user future. Invalidation of any provision of these Terms shall not invalidate
complies with this paragraph. any other provision herein and, the remaining provisions will remain
in full force and effect.

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18. TERMINATION. Seller may terminate any agreement governed sole and exclusive liability and Buyer’s sole and exclusive remedy for
by or arising from these Terms for any reason and at any time by giving claims of infringement of Intellectual Property Rights.
Buyer thirty (30) days prior written notice. Seller may immediately
terminate, in writing, if Buyer: (a) breaches any provision of these 21. GOVERNING LAW. These Terms and the sale and delivery of all
Terms, (b) becomes or is deemed insolvent, (c) appoints or has Products are deemed to have taken place in, and shall be governed
appointed a trustee, receiver or custodian for all or any part of Buyer’s and construed in accordance with, the laws of the State of Ohio, as
property, (d) files a petition for relief in bankruptcy on its own behalf, applicable to contracts executed and wholly performed therein and
or one is filed against Buyer by a third party, (e) makes an assignment without regard to conflicts of laws principles. Buyer irrevocably agrees
for the benefit of creditors; or (f) dissolves its business or liquidates all and consents to the exclusive jurisdiction and venue of the courts of
or a majority of its assets. Cuyahoga County, Ohio with respect to any dispute, controversy or
claim arising out of or relating to the sale and delivery of the Products.
19. OWNERSHIP OF SOFTWARE. Seller retains ownership of all
Software supplied to Buyer hereunder. In no event shall Buyer obtain 22. ENTIRE AGREEMENT. These Terms, along with the terms
any greater right in and to the Software than a right in the nature of a set forth in the main body of any Quote, forms the entire agreement
license limited to the use thereof and subject to compliance with any between the Buyer and Seller and constitutes the final, complete and
other terms provided with the Software. exclusive expression of the terms of sale and purchase. In the event
of a conflict between any term set forth in the main body of a Quote
20. INDEMNITY FOR INFRINGEMENT OF INTELLECTUAL and these Terms, the terms set forth in the main body of the Quote
PROPERTY RIGHTS. Seller is not liable for infringement of any shall prevail. All prior or contemporaneous written or oral agreements
patents, trademarks, copyrights, trade dress, trade secrets or similar or negotiations with respect to the subject matter shall have no effect.
rights (“Intellectual Property Rights”) except as provided in this These Terms may not be modified unless in writing and signed by an
Section. Seller will defend at its expense and will pay the cost of any authorized representative of Seller.
settlement or damages awarded in an action brought against Buyer
based on a third party claim that one or more of the Products sold 23. COMPLIANCE WITH LAWS. Buyer agrees to comply with all
hereunder infringes the Intellectual Property Rights of a third party applicable laws, regulations, and industry and professional standards,
in the country of delivery of the Products by Seller to Buyer. Seller’s including those of the United States of America, and the country or
obligation to defend and indemnify Buyer is contingent on Buyer countries in which Buyer may operate, including without limitation the
notifying Seller within ten (10) days after Buyer becomes aware of U.S. Foreign Corrupt Practices Act (“FCPA”), the U.S. Anti-Kickback
any such claim, and Seller having sole control over the defense of Act (“Anti-Kickback Act”), U.S. and E.U. export control and sanctions
the claim including all negotiations for settlement or compromise. laws (“Export Laws”), the U.S. Food Drug and Cosmetic Act (“FDCA”),
If one or more Products sold hereunder is subject to such a claim, and the rules and regulations promulgated by the U.S. Food and Drug
Seller may, at its sole expense and option, procure for Buyer the Administration (“FDA”), each as currently amended. Buyer agrees to
right to continue using the Products, replace or modify the Products indemnify, defend, and hold harmless Seller from the consequences
so as to render them non-infringing, or offer to accept return of the of any violation of such laws, regulations and standards by Buyer,
Products and refund the purchase price less a reasonable allowance its employees or agents. Buyer acknowledges that it is familiar with
for depreciation. Seller has no obligation or liability for any claim of all applicable provisions of the FCPA, the Anti-Kickback Act, Export
infringement: (i) arising from information provided by Buyer; or (ii) Laws, the FDCA and the FDA and certifies that Buyer will adhere to
directed to any Products provided hereunder for which the designs the requirements thereof and not take any action that would make
are specified in whole or part by Buyer; or (iii) resulting from the Seller violate such requirements. Buyer represents and agrees that
modification, combination or use in a system of any Products provided 08/20
Buyer will not make any payment or give anything of value, directly
hereunder. The foregoing provisions of this Section constitute Seller’s or indirectly, to any governmental official, foreign political party or

Care is taken in the preparation of this publication; however Parker shall not be
responsible for a user’s reliance on any inadvertent typographical errors or omissions.
Information in this catalog is only accurate as of the date of publication. For more current
information, please consult the Parker EPS Division website at www.parker.com/eps.

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! WARNING
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS CAN
CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product and/or system options for
further investigation by users having expertise. It is important that you analyze all aspects of your application, including consequences of any failure and review
the information concerning the product or system in the current product catalog. Due to the variety of operating conditions and applications for these products
or systems, the user, through its own analysis and testing, is solely responsible for making the final selection of the products and systems and assuring that all
performance, safety and warning requirements of the application are met.

The products described herein, including without limitation, product features, specifications, designs, availability and pricing, are subject to change by Parker
Hannifin Corporation and its related companies at any time without notice.

© Copyright 2022, Parker Hannifin Corporation. All rights reserved. EPS 5371 Digital 03/2022

Parker Hannifin Corporation

Engineered Polymer Systems Division
2220 South 3600 West
Salt Lake City, UT 84119
phone 801-972-3000
www.parker.com/eps