Catalog CSS-6431/USA Fastener and Fitting Seals

Introduction

Most fluid systems have fasteners that must be sealed.

Parker’s fastener seal designs found in the Stat-O-Seals®
and ThredSeals® feature an elastomeric sealing element
molded in place within a metal retainer (washer). Although
resembling a simple o-ring groove concept, the mold in
place fastener seal offers numerous advantages. Ideal
for sealing small and miniature sizes, the Parker Lock-O-
Seal® is a two-piece combination seal comprising a sepa-
rately molded o-ring fitted within a surrounding metal
washer. Other speciality fastener seals are also available.
Stat-O-Seals Lock-O-Seals
• Intended to seal the shank of a bolt immediately • 800 Series: Intended to seal the shank of a bolt
under the head immediately under the head
• 600 Series: Intended for sealing standard series • Ideal for sealing small and miniature sizes
fasteners • Special material combinations not available as a
• NAS1523 Series: Applications that require conform- 600 Series Stat-O-Seal
ance to NAS1523
Specialty Products
• 610 Series: Intended for sealing metric fasteners
from 5mm to 22mm • Fastener seal kits
• 250 Lock-O-Seals for sealing straight tube fittings
ThredSeals and banjo style fittings
• Intended for sealing directly on the fastener threads • Food, beverage and FDA related applications
• 750 Series: Intended for sealing most UNC and • Custom designed fastener and fitting seals
UNF threads

2 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

How to Use This Guide

Building a Part Number = Special: Consult Factory Prior

to Ordering
This guide includes an intelligent part numbering system
which allows users to build their own part number from a When none of the “white” and/or “yellow” coded material
wide selection of available elastomers, retainer materi- or size combinations meet your application requirements
als, and part sizes. Each material option and size is color the options that are color coded “gray” should then be
coded to guide the user towards the most economical considered. Consult the Parker CSS Division prior to or-
and readily available part number selections. dering part numbers which consist of “gray” coded mate-
rial or size options. Special minimums, production prepa-
ration charges, and/or extended lead times may apply.
= Standard: General Application Some material and size combinations are not feasible to
Whenever possible materials and sizes represented in manufacture and are thus not available.
white should be selected. These material combinations NAS1523 Series
and sizes are the most economical and readily available,
and will work for most general industrial applications. Material color codes do not apply to NAS1523 Series.
Material selections are governed by NAS specifica-
tions.
= Non-Standard
If there are specific application requirements such as Example Part Number
sealing aggressive fluids, extreme temperatures, or cer-
tification requirements that are outside the recommended 600 - 00 02 - 1/2
usage parameters for “white” coded materials, those that
are color coded yellow should be evaluated next. Some Series #
part numbers built from “yellow” coded materials may have Compound Code
price premiums and/or slightly longer lead times due to
Retainer Code
raw material cost, manufacturability and economies of
scale. Size Designation

3 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

Stat-O-Seal
How the Stat-O-Seal Works Stat-O-Seal Features
The Stat-O-Seal is designed with a pre-calculated inter- Parker Stat-O-Seals are one-piece, molded-in-place seals
ference factor built into the teardrop shaped elastomeric with the rubber sealing element mechanically and/or
seal. The cross section free height of the rubber is greater chemically bonded to the metal retainer. Parker’s “Splined
than the metal retainer, providing the proper compres- and Coined” mechanically bonding feature is used on
sion without squeezing the seal beyond its elastic limit. many 600, NAS1523 and 610 series sizes. This feature
ensures a positive attachment of the rubber to the re-
As the fastener is installed into the mating hardware, the tainer, eliminating missing or loose seal elements asso-
Stat-O-Seal is compressed down to the retainer thick- ciated with bonded seals. Stat-O-Seals are designed to
ness. The retainer provides a positive alternate load path seal beneath the head of the fastener as shown for both
for fastener torque and forms a protective gland area for internal and external pressure and vacuum systems.
the confinement of the seal in a controlled state. Since
the elastomer seal cannot move outward, the mass of Stat-O-Seals offer users long and reliable service, a high
the seal is forced inward against the shank of the fas- degree of reusability and easy assembly. The Stat-O-
tener and against the mating surfaces, creating a posi- Seal’s unique features provide many advantages and ben-
tive seal. This principle is known as controlled confine- efits as shown below:
ment sealing. The diameter of the fastener head should • No machined O-ring grooves are required in the
always exceed that of the maximum “E diameter” (see mating flange
dimensional sketch on page 5) in order to preserve this
• Precisely controlled optimum percent squeeze
principle.
eliminates over compression
• The retainer edge is visible after installation allow-
STAT-O-SEAL ing for easy visual inspection and reducing failures
METAL TO METAL caused by missing seals
CONTACT
• The ridged self centering design provides easy and
accurate placement of the seal
• The solid metal to metal contact improves joint
stability and eliminates re-torquing
• Long reliable service and a high level of reusability
• Rubber/bolt interference provides for easy assembly

BLOCKED
LEAKAGE PATH

VISIBLE
RETAINER EDGE

4 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

600 Series Stat-O-Seal – Designed for Standard Series Fasteners

RETAINER
RETAINER O.D.
THK
THK A
I .D.
RUBBER
THK

1
/2 DIAMETRICAL
E MAX.
CLEARANCE

SECTION A
A-A
600 Series Stat-O-Seal Dimensions
Thread
Fastener Major E Diametrical
Size Diameter I.D. Diameter* O.D. Retainer Rubber Clearance**
(Ref.) (Ref.) ± .010 Max. ± .010 Thickness Thickness (Ref.)
#6 0.138 .130 .229 .385 .040 ±.004 .050 ±.003 1/64 Max.
#8 .164 .156 .255 .385 .040 ±.004 .050 ±.003 1/64 Max.
#10 .190 .180 .317 .443 .050 ±.005 .072 ±.005 1/64 Max.
#10 O/S .190 .186 .365 .468 1/64 to 1/32
1/4 .250 .240 .381 .505 1/64 Max.
1/4 OS .250 .245 .422 .531 1/64 to 1/32
5/16 .312 .301 .488 .603
3/8 .375 .364 .546 .666
7/16 .438 .427 .618 .760
1/2 .500 .490 .696 .880
9/16 .562 .552 .759 1.067
5/8 .625 .615 .818 1.193
11/16 .688 .674 .898 1.260 .050 ±.005 .072 ±.005
3/4 .750 .740 .982 1.322 .064 ±.005 .096 ±.005
13/16 .812 .798 1.048 1.416
7/8 .875 .864 1.105 1.510
15/16 .938 .921 1.172 1.635
1 1.000 .988 1.234 1.760
1 1/16 1.063 1.050 1.290 1.822
1 1/8 1.125 1.106 1.351 1.885
1 3/16 1.188 1.167 1.442 1.947
1 1/4 1.250 1.229 1.474 2.010
1 5/16 1.313 1.290 1.567 2.072
1 3/8 1.375 1.352 1.631 2.135
1 7/16 1.438 1.413 1.693 2.197 .064 ±.005 .096 ±.005
1 1/2 1.500 1.475 1.817 2.260 .091 ±.005 .133 ±.005
1 5/8 1.625 1.600 1.942 2.385
1 3/4 1.750 1.725 2.067 2.510
1 7/8 1.875 1.850 2.192 2.635
2 2.000 1.975 2.317 2.760 .091 ±.005 .133 ±.005
3 3.000 2.975 3.430 5.500 .120 ±.005 .175 ±.005 1/64 to 1/32
Notes:
* The fastener head diameter must be greater than the “E” diameter. A cover washer is recommended when the fastener head is
near or below the “E” diameter.
** A chamfer with an outside diameter equal to that of the recommended diametrical clearance may be used.

5 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

600-XX XX - X
Recommended
Seal Recommended
Code Specification Operating
Compound Uses
Temp.
General industrial
Commercial None environments,
-30°F to
00 Standard General petroleum fluids
+225°F
Nitrile Purpose and cold/room
temperature water
General industrial
SAE AMS-R-6855, environments,
N406-60 -40°F to
01 CL 1 or 2, petroleum fluids
Nitrile +225°F
Grade 60 (*1) and cold/room
temperature water
SAE AMS-R-7362,
47-071 MIL-PRF-7808 -60°F to
04 TYPE 1or 2
Nitrile Synthetic engine oil +180°F
Grade 60 (*1)
S604-70 SAE AMS Air, weathering -65°F to
06
Silicone 3304 and gases +400°F
ASTM D2000 Refrigerant, Silicate
C408-70 -35°F to
07 M3BC710 A14 ester fluids,
Neoprene +250°F
B4 E034 F17 Z1 weathering.
Air, petroleum
fluids, hydrocarbons,
V720-75 SAE AMS -20°F to
31 silicone fluids,
Fluorocarbon 7276 +400°F
many acids, and
vacuum applications
Water, steam,
ozone and
E1267-80
weather resistant, -70°F to
50 Ethylene NAS 1613
automotive brake +250°F
Propylene
fluid, Skydrol,
phosphate esters
SAE AMS-R-25988, Petroleum fluids,
L1830-60 -85°F to
60 Type I, silicone fluids,
Fluorosilicone +350°F
Class 1, Grade 60 silicate esters
FDA conforming
S355-75 SAE AMS compound: Air, -60°F to
63
Silicone 7267 weathering and +400°F
gases.
Water, steam,
ozone and
E515-80
weather resistant, -65°F to
83 Ethylene Commercial
automotive brake +250°F
Propylene
fluid, Skydrol,
phosphate esters
Jet fuel, low
temperature
N304-75 SAE applications, -65°F to
02
Nitrile AMS-P-25732 petroleum fluids +225°F
and cold/room
temperature water
General industrial
environments,
N602-70 -70°F to
05 SAE AMS-P-5315 petroleum fluids
Nitrile +180°F
and cold/room
temperature water
Skydrol and other
B318-70 SAE AMS -65°F to
82 phosphate esters,
Butyl 3238 +212°F
water, steam and air
Water, steam,
ozone and
E529-60
weather resistant, -65°F to
81 Ethylene Commercial
automotive brake +250°F
Propylene
fluid, Skydrol,
phosphate esters

6 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

600-XX XX - X
Retainer Size
Code Finish (dash
Material
Low-Carbon Zinc Plated, number)
02 Steel, ASTM A Commercial 6
109/A 109M Grade 8
Low-Carbon Cadmium Plated, 10
00 Steel, Commercial Commercial
10 O/S
Grade Grade
Low-Carbon Cadmium Plated 1/4
01 Steel, ASTM A Per SAE 1/4 OS
109/A 109M AMS-QQ-P-416 5/16
7075-T6 3/8
Anodize Per
Aluminum
15 MIL-A-8625, 7/16
SAE AMS-QQ-
Type II, Class I 1/2
A-250/12
302/304 Passivate Per 9/16
30 Stainless Steel, SAE AMS- 5/8
SAE AMS 5513 QQ-P-35
3/4
4130 Chrome
Cadmium Plated 7/8
Molybdenum Steel,
Per SAE 1
SAE-AMS 6350,
42 AMS-QQ-P-416
Heat Treated to 11/16
Type II, Dyed
125,000 psi min 13/16
Black, Class 2
tensile strength
15/16
4130 Chrome
1 1/16
Molybdenum Steel, Zinc Plated Per
SAE-AMS 6350, ASTM B 633 1 1/8
43 1 3/16
Heat Treated to Type II,
125,000 psi min Dyed Black 1 1/4
tensile strength
1 5/16
1 3/8
1 7/16
1 1/2
= Standard: General application
1 5/8
= Non-Standard 1 3/4
1 7/8
= Special: Consult factory prior to 2
ordering 3

Notes:
*1: Compound meets both the Class 1 and Class 2 requirements.
Certs will be issued to Class 1 unless Class 2 is specifically
requested.
2: For more detailed compound information, see the Parker
O-Ring Handbook (ORD 5700).

Example Part Number:

600-0002-1/2 = Commercial Standard Nitrile, Steel-Zinc Plated,
Size 1/2

7 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

NAS1523 Series Stat-O-Seal – Designed for Applications

Requiring NAS1523 Conformance

RETAINER RETAINER
O.D.
THK THK A
INSTALLATION HOLE DIAMETER
I .D.
RUBBER
THK

E MAX.

SECTION A
A-A

NAS1523 Stat-O-Seal Dimensions

NAS Fastener E Installation
Dash Size I.D. Diameter O.D. Retainer Rubber Hole Dia.
Number (Ref.) ± .010 Max. + .020 / - .005 Thickness Thickness (Ref.)
-06 #6 .130 .229 0.375 .040 ±.004 .050 ±.003 .137/.154
-08 #8 .156 .255 0.375 .040 ±.004 .050 ±.003 .165/.180
-3 #10 .180 .317 0.438 .050 ±.005 .072 ±.005 .191/.205
-4 1/4 .240 .445 0.500 .251/.265
-5 5/16 .301 .508 0.593 .327/.344
-6 3/8 .364 .571 0.656 .390/.405
-7 7/16 .427 .634 0.750 .453/.468
-8 1/2 .490 .696 0.875 .515/.531
-9 9/16 .552 .759 1.062 .577/.594
-10 5/8 .615 .818 1.188 .640/.656
-11 11/16 .674 .924 1.250 .050 ±.005 .072 ±.005 .703/.718
-12 3/4 .740 .982 1.312 .064 ±.005 .096 ±.005 .765/.781
-13 13/16 .798 1.048 1.406 .827/.843
-14 7/8 .864 1.105 1.500 .890/.906
-15 15/16 .921 1.172 1.625 .953/.968
-16 1 .988 1.234 1.750 1.015/1.032
-17 1 1/16 1.050 1.290 1.812 1.077/1.093
-18 1 1/8 1.106 1.351 1.875 1.140/1.156
-19 1 3/16 1.167 1.413 1.937 1.203/1.218
-20 1 1/4 1.229 1.474 2.000 1.265/1.281
-21 1 5/16 1.290 1.536 2.062 1.328/1.344
-22 1 3/8 1.352 1.597 2.125 1.390/1.406
-23 1 7/16 1.413 1.641 2.187 .064 ±.005 .096 ±.005 1.452/1.468
-24 1 1/2 1.475 1.820 2.250 .091 ±.005 .133 ±.005 1.515/1.531
-26 1 5/8 1.600 1.945 2.375 1.640/1.656
-28 1 3/4 1.725 2.070 2.500 1.765/1.781
-30 1 7/8 1.850 2.195 2.625 1.890/1.906
-32 2 1.975 2.320 2.750 .091 ±.005 .133 ±.005 2.015/2.031

8 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

NAS1523 XX XX X

Retainer Size Recommended

Code Finish Seal Recommended Color
Material Code (dash Code Specification Operating
Compound Uses Code
7075-T6 number) Temp.
Anodize Per General industrial
Aluminum 06 6 SAE
AA MIL-A-8625, environments,
SAE-AMS- 08 8 N406-60 AMS-R-6855, -40°F to
Type II, Class I B petroleum fluids Black
QQ-A-250/12 (*1) Nitrile CL 1, +225°F
3 10 and cold/room
302/304 Grade 60
Passivate Per 4 1/4 temperature water
C Stainless Steel,
SAE AMS-QQ-P-35 5 5/16 Air, pertoleum fluids,
SAE AMS 5513
V720-75 SAE hydrocarbons, silicone -20°F to
6 3/8 E Gray
4130 Chrome Cadmium Plated Fluorocarbon AMS 7276 fluids, many acids, and +400°F
Molybdenum Steel, Per SAE 7 7/16 vaccum applications
— SAE AMS 6350, AMS-QQ-P-416 8 1/2 General industrial
Heat Treated to Type II, Class 2, SAE
9 9/16 environments,
N406-60 AMS-R-6855, -40°F to
Rockwell C26 to C33 Dyed Black F petroleum fluids None
10 5/8 Nitrile CL 1, +225°F
and cold/room
11 11/16 Grade 60
temperature water
12 3/4 Air, weathering
S355-75 SAE -60°F to
13 1 3/16 H and gases. Brown
Silicone AMS 7267 +400°F
FDA conforming.
14 7/8
Skydrol and other
15 1 5/16 B318-70 SAE -65°F to
N phosphate esters, Green
16 1 Butyl AMS 3238 +212°F
water, steam and air
17 1 1/16 Water, steam,
18 1 1/8 E1267-80 ozone and weather
-70°F to
P Ethylene NAS 1613 resistant, automotive Purple
19 1 3/16 +250°F
Propylene brake fluid, Skydrol,
20 11/4 phoshate esters
21 1 5/16 SAE
22 1 3/8 AMS-R-25988, Petroleum fluids,
L1830-60 -85°F to
23 1 7/16 R Type I, silicone fluids, Red
Fluorosilicone +350°F
Class 1, silicate esters
24 1 1/2 Grade 60
26 1 5/8 S604-70 SAE Air, weathering -65°F to
W White
28 1 3/4 Silicone AMS 3304 and gases +400°F
30 1 7/8 SAE
32 2 47-071 AMS-R-7362, MIL-L-7808 -60°F to
Y Yellow
Nitrile Type 1, Synthetic engine oil +180°F
Grade 60

Notes:
*1. Material specifications shown are prior to molding.
The processing conditions for some elastomers
may slightly anneal the retainer.

Example Part Numbers:

Material color codes do not apply. Material selections are governed by NAS specifications.
NAS1523AA12R = 7075-T6 Aluminum – Anodized, L1830-60 Elastomer, 3/4 Size
NAS1523C10B = 302/304 Stainless Steel – Passivated, N406-60 Elastomer, 5/8 Size
NAS1523-10B = Chrome Moly Steel – Cad Plated, N406-60 Elastomer, 5/8 Size

9 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

610 Series Stat-O-Seal – Designed for Metric Fasteners

RETAINER RETAINER
O.D.
THK THK A
I .D.
RUBBER
THK

1
/2 DIAMETRICAL
CLEARANCE E MAX.

SECTION A
A-A

610 Series Stat-O-Seal Dimensions

Fastener E Retainer Rubber Diametrical
Size I.D. Diameter* O.D. Thickness Thickness Clearance**
mm ± 0.25 mm ± 0.25 mm ± 0.25 mm ± 0.13 mm ± 0.13 mm Max. (Ref.)
(Ref.) (± .010 in.) (± .010 in.) (± .010 in.) (± .005 in.) (± .005 in.) mm (in.)
4.83 6.40 9.78 1.02 1.32 0.25
5
(.190) (.252) (.385) (.040) (.052) (.010)
5.79 7.80 11.25 1.27 1.68 0.25
6
(.228) (.307) (.443) (.050) (.066) (.010)
7.77 10.57 13.49 1.27 1.68 0.38
8
(.306) (.416) (.531) (.050) (.066) (.015)
9.73 12.24 15.32 1.27 1.68 0.38
10
(.383) (.482) (.603) (.050) (.066) (.015)
11.71 15.52 19.30 1.27 1.68 0.38
12
(.461) (.611) (.760) (.050) (.066) (.015)
13.67 17.60 22.35 1.27 1.68 0.38
14
(.538) (.693) (.880) (.050) (.066) (.015)
15.67 19.18 27.10 1.27 1.68 0.38
16
(.617) (.755) (1.067) (.050) (.066) (.015)
19.66 24.21 33.38 1.63 2.44 0.38
20
(.774) (.953) (1.314) (.064) (.096) (.015)
21.62 27.38 31.50 1.27 1.68 0.38
22
(.851) (1.080) (1.240) (.050) (.066) (.015)
Notes:
* The fastener head diameter must be greater than the “E” diameter. A cover washer is recommended when
the fastener head is near or below the “E” diameter.
** A chamfer with an outside diameter equal to that of the recommended diametrical clearance may be used.

10 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA
Catalog CSS-6431/USA Fastener and Fitting Seals

610-XX XX - X

Recommended
Seal Recommended
Code Specification Operating
Compound Uses
Temperature
General industrial
ASTM D2000
N1840-90 environments, petroleum
15 M3CH910 B34 -40°F to +225°F
Nitrile fluids and cold
E016 E036
temperature water
Air, petroleum fluids,
ASTM D2000
V720-75 hydrocarbons, silicone
31 M2HK710 A1-10 -20°F to +400°F
Fluorocarbon fluids, many acids, and
SAE-AMS 7276
vacuum applications

Size
Code Retainer Material Finish (dash
number)
4130 Chrome Molybdenum Steel, Zinc Plated 5
SAE-AMS 6350, Heat Treated to Per ASTM B 633 6
44 8
120,000 psi min tensile strength, Type II,
HRc 25-30 Dyed Clear 10
12
Zinc Plated 14
4130 Chrome Molybdenum Steel,
Per ASTM B 633 16
43 SAE AMS 6350, Heat Treated to
Type II, 20
175,000 psi min tensile strength
Dyed Black 22

02 Low-Carbon Steel Zinc Plated

= Standard: General application

= Non-Standard

= Special: Consult factory prior to ordering

Example Part Number:

610-1543-10 = N1840-90 Elastomer, 4130 Chrome Moly HT to
175,000 psi tensile strength – Zinc plated,
Size 10 mm

11 Parker Hannifin Corporation

Composite Sealing Systems Division
San Diego, CA