sealing

elements

High purity sealing and

component solutions for
t h e food-, pharma- and
biochemical industry

DOCUMENTATIENUMMER VAN DEZE PUBLICATIE:

2 5 4 0 0 2 (2001)
VOOR MEER INFORMATIE OVER DE INHOUD, BEL:

(03) 829 27 20

(03) 828 39 59

ERIKS nv
Boombekelaan 3,
B-2660 Hoboken,
België
info@eriks.be
www.eriks.be
HIGH PURITY SEALS

Table of contents

1. Introduction FDA concept page 4

Seals
2. O-rings 8

3. Rubber cords 21

4. Oil seals / V-seals 23

5. Rubber profiles 24

6. Rubber moulded parts 28

7. Triclover gaskets 30

8. Kalrez® Sanitary seals 42

9. Hydraulic & pneumatic seals / wipers 43

10. Eriflon PTFE Lip Seals 44

11. Eriseals 46

12. Hoses 47

13. Gaskets 51

Pump packings
14. Mechanical seals 54

15. Braided packings 56

Valves
16. Diaphram valves 58

17. Engineering plastics 59

18. Lubrificants 60

19. Rubberqualities 70

20. Addendum 71

21. Glossary 72

Responsibility

All technical information in this brochure has been selected

with the utmost care. Nevertheless, we are not responsible
for incorrect details in this brochure.

2
HIGH PURITY SEALS

This information has been carefully

prepared to help in selecting the correct
elastomer or perfluorocarbon utilized in
high puritiy sanitary hygenic seals
where critical pure water, process
fluids (both ambient and hot) and SIP
environments exist.The intention is to
consider the different uses, applications
and conditions to determine the most
favorable seal and gasket material for
each application.

The three main goals of this brochure

are to be of help:

• To protect products from contamina-

tion, spalling, particulates and TOCs
resulting from the use of improper
sanitary gasket material.
• To protect facilities from unneccessary
downtime associated with sanitary
gasket failure and replacement from
use of improper gasket material.
• To provide a standard of consistency
of sanitary gaskets selection between
multiple facilities.

3
HIGH PURITY SEALS

1. Introduction FDA concept

In the processing of food, there are Similarly, the acrylonitrile monomer is

situations where significant contact of of concern to health and is not permit-
the food with rubber products can ted to migrate at detectable levels, so
occur. The unique properties of rubber levels of free monomer are tightly con-
as a flexible and elastic material lead to trolled during production.
the use of rubber in conveyor belting, Rubbers intended for food contact use
hosing, seals and gaskets etc. A wide are normally compounded to composi-
variety of rubber compound types can tional guidelines given in legislation.
be employed.
Migration data from a rubber product
For the various food industries, the are expressed in terms of overall
times, temperatures and areas of con- migration and specific migration. In the
tact vary greatly, and these parameters case of overall migration, it is only the
have a profound effect on the potential mass of migrating material under a
of species to migrate from the rubber given set of conditions that is of inter-
component into the food. In general, est and no consideration as to its com-
the use of rubbers for mainly process- position is given. With specific migra-
ing applications means that the contact tion, analysis techniques are chosen
times with food are short (e.g. minutes). that can quantify individual chemical
This is different to plastics which, when species. Overall tests can be used to
used as packaging materials, often assess the quality and suitability of a
have long contact times (e.g. weeks). rubber compound for a food contact
application, whereas specific tests are
It is obviously inherently undesirable for targeted on chemical species that are
any chemical species to migrate into a known to give particular health and
foodstuff during either processing or safety concerns.
storage. It is therefore important to
understand how rubber products might When it comes to designing migration
affect the quality of foodstuffs due to experiments, a worse case scenario is
the migration of chemicals by obtaining often set up. This involves maximising
data on both the types of species that the potential for migration for a given
migrate and the extent of migration. system by choosing the highest values
Given that rubber components are pro- for parameters such as temperature,
duced from complex formulations, and contact area and contact time for the
that chemical modification occurs testing. If the migration values
during any vulcanisation step, predic- obtained are still within the legislative
tion of migration data may be difficult; limits, a margin of safety is obtained
certainly more difficult than it is for the for the everyday use of the rubber
majority of plastics. product.

Rubber constituents which can poten- The objective of this catalogue is to

tially migrate include low molecular present the different products with
mass monomers, vulcanising agents, FDA compliancy to our customers.
antidegradants, plasticisers, oils and
waxes and their breakdown products. More details can be achieved on
For example, polar plasticisers such as request.
di-2-ethylhexyl phthalate are readily
soluble in alcohol, so plasticised rubber
should not be used in contact with
alcoholic drinks.

4
HIGH PURITY SEALS

1. Introduction FDA concept

1.1. Rubber components used in

food processing operations Table 1 : Rubber components used in food contact applications

Location Component
Rubber components used in contact Food transportation Conveyor belts, hoses and tubing
with food were found to be generally Pipework components Seals, gaskets, flexible connectors and butterfly valves
restricted to the situations shown in Pumps Progressive cavity pump stators, diaphragm pumps
Table 1. Plate heat exchangers Gaskets
Other uses of rubber components General seals and gaskets Used in machinery and storage vessels
were found, which do not fit into the Packaging seals Can sealants and bottle seals
listed categories, e.g. silicone sweet
moulds, rubber skirting, paddle rubber
lips, gloves and feather pluckers.

1.1.1. Contact areas 1.1.2. Contact times

Food contact areas of whole assem- In general, contact times with rubber
blies, be these total pipelines, paddle components are low, i.e. less than 60
rubber lips, or plate heat exchangers seconds, and the maximum contact
cover a wide range from less than time in a plate heat exchanger is
100 cm2 to around 56.000 cm2, the reported by manufacturers of these
plate heat exchanger being the assem- products to be no more than 3 minutes.
bly found generally to be associated Few components or assemblies give
with the highest contact area. longer contact times, the exceptions
generally being conveyor belts and
It is important to make a distinction sweet moulds where contact times
between the contact area of an were less than 1 hour.
individual rubber component (e.g. a One butterfly valve sealing off a soakig
plate exchanger gasket) and the total tank remained in contact with the food
contact area of the assembly the com- for 24 hours routinely, and beer could
ponent is in (i.e. the plate heat reside in beer engines for up to 12
exchanger). The vast majority of rubber hours. The brewing industry is one
components had individual food con- process area where contact could
tact areas of less than 1000 cm2 with occur for periods in the range from
around two thirds of these having con- seconds to 12 weeks. Meat and poultry
tact areas of less than 100 cm2. nets can remain in contact with the
product for up to four weeks. The
From the categories listed in Table 1, longest contact times (up to 5 years are
the following rubber components usu- possible) occur with packaging seals.
ally have contact areas of less than
200 cm2: general seals and gaskets,
plate heat exchanger gaskets, pipe
work seals and packaging seals. Pump
components, pipe valves and flexible
connectors have greater individual
contact areas, up to 1.000
cm2.Individual components that have
contact areas greater than 1.000 cm2
tend to have a high aspect ratio, as
typified by hoses and conveyor belts.
The highest contact area found in the
Rapra survey was for a hose at
approximately 50.000 cm2. However
certain conveyor belts had potential
contact areas of up to 1.500.000 cm2.

5
HIGH PURITY SEALS

1. Introduction FDA concept

1.1.3. Contact Temperature 1.1.4. Contact Data

The review of the food processing The food processing areas reviewed
industry indicated that the temperature included: a creamery; butter packaging;
at which contact with rubber occurs the production of sugar from sugar
rarely exceeds 80°C. beet; breakfast cereal manufacture;
a maltings; a brewery; the refining of
Temperatures in the range 100-140°C vegetable oil; chocolate manufacture;
do occur in some processes, e.g. pas- sweet production; an abattoir; the
teurisation of UHT milk, the production processing of baked beans; vending
of toffee in silicone moulds and the machines; the processing of canned
sterilisation of cans and jars, but the pulses, carrots and potatoes; and the
contact time of the food at the elevated processing of chilled fruit juice and
temperature is normally reasonably long-life fruit juice. The information
short (<1 hour). collected on food contact with rubber
The most extreme temperatures were is summarised in Table 2.
encountered in the refining of vegetable
oils where temperatures in the range
170-250°C were used in the deodoris-
ing section of the plant. Fluorocarbon
rubbers are required to resist these
high temperatures.

Meat and poultry nets may be subject

to temperatures up to 250°C for several
hours if they are not removed prior to
cooking.

Table 2 : Summary of the information collected on food contact with rubber

Component Contact area individual Contact area Typical Maximum Contact Temperature
component (cm2) in assemblies (cm2) contact times contact time General Extreme
Food transportation Up to 50,000 - < 1 hr - < 85°C -
Pipework components < 1,000 < 10,000 < 1 hr 2 weeks < 140°C 250°C
Pumps < 10,000 - < 1 hr 2 weeks < 85°C -
Plate heat exchanger < 1,000 Up to 56,000 < 3 min - < 140°C 250°C
gaskets
General seal & gaskets < 1,000 Up to 30,000 < 1 hr 12 weeks < 85°C -
Packaging seals and < 1,000 - Up to 5 years - ambient 140°C
closures
Miscellaneous < 1,000 - < 1 hr 4 weeks < 85°C 250°C

Notes:
1. Potential contact areas could be up to 1.500.00 cm2 for some conveyor belts
2. May have extended contact times during shut downs. Beer keg seals may have contact times of up to 12 weeks
3. Refining of vegetable oil
4. During pasteurisation/sterilisation
5. Meat and poultry nets
6. Meat and poultry nets if not removed before cooking

6
HIGH PURITY SEALS

1. Introduction FDA-USP concept

1.2. General information on FDA 1.5. Migration tests FDA

Since many years ERIKS has a leading Some compounds have been tested
role in the production and marketing of by independent laboratories (for exam-
high quality seals. ple ‘Rapra’ in England).
ERIKS has also developed a vast range Rubber articles intended for repeated
of elastomeric compounds that are for- use in contact with aqueous food shall
mulated to comply with the meet the following specifications: ‘The
regulations issued by the ‘United States food-contact surface of the rubber
Federal Food and Drug Administration’ article in the finished form in which it is
(FDA). These regulations are stipulated in to contact food, when extracted with
Title 21, chapter 1, subchapter B, sec- distilled water at reflux 20 milligrams
tion 177.2600 of the ‘Federal food and per square inch during the first 7 hours • USP Pharmacopoeia Class VI-XXII
Cosmetic Act’. of extraction, nor to exceed 1 mil- Certification
These regulations define which rubber ligram per square inch during the suc- • Cytotoxicity Criteria
polymers and compounding ingredients ceeding 2 hours of extraction’. • CFR Title 21 Section 177.1550
can be used in rubber articles, intended • CFR Title 21 Section 177.2600
for repeated contact with food and Rubber articles intended for repeated • Traceability: Lot and Batch
preventing the use of dangerous use in contact with fatty foods shall • Certification: Lot and Batch
substances that might cause cancer. meet the following specifications: ‘The • ASME-BPE Standards
food-contact surface of the rubber • USD Standards
article in the finished form in which it • 3-A Sanitary Standards
is to contact food, when extracted • Current Good Manufacturing
1.3. Types of FDA with n-hexane at reflux temperature, Practices (CGMP)
shall yield total extractives not to • Manufacturer data and specifications
Two important types (class 1 and class 2) exceed 175 milligrams per square inch • Consultation with various pharmaceu-
of FDA exist, depending on the percent- during the first 78 hours of extraction, tical users
age of furnace carbon/black that is nor to exceed 4 milligrams per square
added to the compound. inch during the succeeding 2 hours of The gasket materials considered are
Class 1: for aqueous and edible oils extraction’. Tef-Steel® (Teflon/Stainless Steel),
greasy media; Teflon® (PTFE), Silicone (platinum),
Class 2: for aqueous media. Viton®, EPDM and Buna-N.

1.6. USP The 3 main goals are:

• To protect products from contamina-
1.4. Certification USP class VI was especially develo- tion, spalling, particulates and TOCs
ped for the pharmaceutical industry. resulting from the use of improper
ERIKS guarantees the ‘conformity’ by: This information has been carefully sanitary gasket material.
• strict production methods, prepared to help in selecting the cor- • To protect facilities from unnecessary
• FDA-sticker is put on the packaging, rect elastomer or perfluorocarbon uti- downtime associated with sanitary
• a certificate of conformity can be lized in high purity sanitary hygenic gasket failure and replacement from
obtained (on payment) with every seals where critical pure water, use of improper gasket material.
delivery. process fluids (both ambient and hot), • To provide a standard of consistency
and SIP environment exist. of sanitary gaskets selection between
In general ERIKS guarantees that the The intention is to consider the differ- multiple facilities.
FDA-materials are ‘FDA-compliant’ ent uses, applications and conditions
which means they are composed with to determine the most favorable gas- Most decisions driving gasket type
ingredients according the FDA-regu- ket material for each application. The selection are based on chemistry, tem-
lations under 1.2. on this page. following criteria is used in determining perature, exposure limits, USP, FDA
correct sanitary gasket materials. qualifications, and curing methods.

7
HIGH PURITY SEALS

2. O-rings

2.1. VulcOrings FDA class 1 (less 10% carbon black)

VulcOrings are produced in small quan-

tities. Inside diameter from 30 mm up
to 5.000 mm in different cross-section
diameters from 1,78 up to 25 mm.
For silicone up to 40 mm diameter.
No chemical additif is added in the
bonding of the core-ends.
Datasheet on request.

VulcOrings, class 1

Compound Description Hardness

°Shore A
Silicone 60 FDA GP60 VulcOring - Silicone 60, transparent FDA, WRC 60
Silicone 70 FDA GP70 VulcOring - Silicone 70, transparent FDA, WRC 70
Silicone 75 FDA MC203 VulcOring - Silicone 75, red FDA 75
Silicone 80 FDA GP80 VulcOring - Silicone 80, transparent FDA, WRC 80
EPDM 75 FDA MC 187 VulcOring - EPDM 75, black FDA 75
NBR 75 FDA MC 185 VulcOring - NBR 75, black FDA 75
Viton® 75 FDA MC 172 VulcOring - Viton® 75, black FDA 75
Viton® 75 FDA MC 205 VulcOring - Viton® 75, white FDA 75
Neoprene® FDA MC 186 VulcOring - Neoprene® 75, black FDA 75
Note: These compounds can also be produced as compression moulded O-ring.

2.2. O-rings Silicone FDA class 1

ERIKS O-rings, compressed moulded,

produced in smaller quantities
Datasheet on request.

Silicone, class 1
Compound Colour Hardness ° Shore A
S 40 H white 40
S 40 T transparent 40
S 50 H white 50
S 50 T transparent 50
S 55 T transparent, Platinum cured, less extractabels 50
S 60 H white 60 FOOD
S 60 T transparent 60
S 65 R red 65
S 65 T transparent, Platinum cured, less extractabels 60
S 70 H white 70
S 70 T transparent 70
S 75 T transparent, Platinum cured, less extractabels 70
S 80 H white 80
S 80 T transparent 80
S 1/70 Ral 3000 red (also KTW approved; 70
only injection moulded)
S 1/60 Ral 3000 red 60
(also KTW-WRC approved; injection moulded)

8
HIGH PURITY SEALS

2. O-rings

2.3. O-rings EPDM / NBR / Neoprene®-FDA

ERIKS O-rings, compressed moulded,

produced in smaller quantities
Datasheet on request.

EPDM, class 2

Compound Colour Hardness ° Shore A

E 50 Q black (peroxide cured) 50
E 60 H white - class 1 60
E 70 H white - class 1 70
E 70 Q black (peroxide cured) 70
E 80 Q black (peroxide cured)
E 80 H white - class 1 80
E 90 Q black (peroxide cured) 90
TIMO 70 black (FDA-WRC-NSF-KTW approved; 70
only injection moulded)
TIMO 1-70 black (FDA-KTW approved; 70
only injection moulded)
1520 black - ACS 70

NBR (Nitrile, Buna-N), class 2

Compound Colour Hardness ° Shore A

N 70F class 1 black 70
N 70W class 1 white - class 1 70
N 80F class 1 black 80
N 90F class 1 black 90
NBR 70 class 1 black 70
WRC 70 FDA-KTW-DVGW approved; 70
(only injection moulded)

CR (Neoprene®), class 2

Compound Colour Hardness ° Shore A

C 70F class 2 black 70
C 70H class 2 white - class 1 70

9
HIGH PURITY SEALS

2. O-rings

2.4. O-rings Viton® FDA

ERIKS offers you a number of com-

pounds with approval for contact with
food stuffs.

These compounds meet the demands

according to the FDA Regulations, title
21, Chapter 1, Subchapter B,
Paragraph 177.2600 for use in contact
with unpacked food stuffs.

For seals, two relevant FDA classes

exist: firstly, Class 2 for contact with
liquids and drinks and Class 1 for con- Y
STR
tact with milk, milk-derived products INDU
and edible oils.
FOOD
Our standard Viton® FDA O-rings
meet Class 1 requirements.

We offer:

FDA-approved Viton® Compounds for direct contact with food-stuff: class 1

Compound Colour Hardness ° Shore A

V-178 FDA red 75
V-180 FDA white 75
MC172 (VulcOring) black 75
MC205 (VulcOring) white 75

Last but not least, we can supply a

number of compounds, hardness
varying from 60 to 95° Shore, that
also meet FDA Class 2.
We kindly invite you to contact us
for further information.

10
HIGH PURITY SEALS

2. O-rings

2.5. O-rings Kalrez® FDA Medical use

Kalrez® perfluoroelastomer parts are Caution: Do not use Kalrez® perfluoro-

not routinely tested using the USP elastomer parts in medical applications
testing protocol. Cured samples made involving implantation in the human
only from compounds 6221 and 6230 body. For other medical applications,
have been tested in accordance with see DuPont Dow Elastomers Medical
USP protocols and meet the require- Applications Policy, H-69237. DuPont
ments of a USP Class VI polymer. USP Dow Elastomers will not sell or support
testing was done to support use of products for implantation in the human
Kalrez® parts in pharmaceutical pro- body. DuPont Dow Elastomers does Proven suitability for food and phar-
cessing and food processing applica- not make surgical or medical grades of ma processing
tions. While USP Class VI compliant Kalrez® perfluoroelastomer parts and
materials are not required for pharma- does not guarantee continuity of DuPont Dow Elastomers welcomes the
ceutical and food processing applica- process in our manufacturing opera- new legislation as an opportunity to
tions, many pharmaceutical and food tions as changes may occur from time reaffirm the suitability of Kalrez® 6221
processing customers, including cus- to time. and 6230 perfluoroelastomer parts for
tomers seeting ISO-9000 certification, repeat use food contact applications.
have requested compliance. Testing of Kalrez® gains Food Contact The FCN requires Kalrez® 6221 and
any finished article that incorporates Substance Notification 6230 to meet extractable levels not to
Kalrez® perfluoroelastomer parts is exceed 0.2 milligrams per square inch.
the responsibility of the manufacturer We are very pleased to announce that This provides further confirmation of
or seller of the finished article if certifi- the United States Food and Drug the low risk of contamination from
cation that meets USP standards is Administration (FDA) has reaffirmed Kalrez® parts, the long term sealing
required. the compliance of Kalrez® 6221 and solution for challenging food and phar-
6230 perfluoroelastomer parts for maceutical applications.
repeated use in contact with food.
Note: Statement of Compliance
Ask our engineers for calculation of the Food Contact Substance Notification
right Kalrez® O-Ring for your applica- FCN000101 describing perfluorocar- Kalrez® parts made from compounds
tion bon cured elastomers Kalrez® 6221 6221 and 6230 meet the extractive
and 6230 became effective on requirements of 21CFR177.2600(E)
December 19, 2000. Meeting this strin- and may be used for repeated use in
gent requirement in addition to existing compliance with the Food, Drug and
compliance with FDA 21CFR177.2600 Cosmetics Act and all applicable food
reinforces DuPont Dow’s determina- additive regulations. Kalrez® parts
tion to exceed standards used by the made from compounds 6221 and 6230
pharmaceutical industry. The notifica- have been tested in accordance with
tion process for food contact sub- the United States Pharmacopeia Class
stances, described in section 409(h) of VI (USP Class VI) testing protocol.
the Federal Food, Drug and Cosmetic Testing using the protocols cited
Act (FFDCA), emerged in 2000 as the above was performed by an external
primary method by which the FDA testing facility in compliance with 21
authorises the use of food additives CFR, Part 58 Good Laboratory
that are food contact substances. A Practice for Nonclinical Laboratory
notification for a food contact sub- Studies.
stance contains sufficient information 6221 and 6230 offer excellent steam
to demonstrate that the substance is cycling resistance and reduce
safe for the intended use that is the extractables from sealing materials to
subject of the notification trace levels.
(21U.S.C.348(h)(1)).

11
HIGH PURITY SEALS

2. O-rings

2.5. O-rings Kalrez® FDA Thermal Stability materials that come in contact with
Unlike other elastomeric seals made highly pure and aggressive water (e.g.
Kalrez® Perfluoroelastomer Parts with FDA compliant elastomers, WFI) must be chosen with care in order
for Pharmaceutical and Food Kalrez® perfluoroelastomer parts are to prolong seal life. The perfluoroelas-
Handling Applications thermally stable up to 260°C, permitting tomer compounds used in Kalrez®
use in applications such as Stage II parts have been shown to have
Kalrez® parts made from compounds Sterilization processes, where other extremely low to non-detectable
6221 and 6230 provide superior chem- elastomers lose their sealing capabilities. extractable levels in aggressive water
ical resistance and low contamination systems. Because the perfluoroelas-
from extractables in pharmaceutical Aggressive Water Resistance tomer polymer in Kalrez® parts is fully
and food handling applications where In aggressive pharmaceutical and saturated, it is also well suited for
FDA compliance is required. semiconductor processing environ- Ozonated Deionized Water service.
Compounds 6221 and 6230 are espe- ments, seal failure from excess Kalrez® parts also exhibit verly low
cially suited for Water For Injection swelling, embrittlement or decomposi- swell and loss of mechanical properties
(WFI) systems, Steam-In-Place (SIP) tion can cause unscheduled downtime after repeated steam cycling.
cleaning and other critical systems. or product contamination. Elastomeric
General Chemical Resistance
The overall chemical resistance of
Table 1- Elastomer Chemical Compatibility * EPDM’s, silicone elastomers and fluo-
Chemical Kalrez EPDM SI FKM roelastomers (FKM) is limited by their
Acetic acid A A A B respective polymer structures. Kalrez®
Acetone A A C U parts, on the other hand, offer the
Citric acid A A A same universal chemical resistance as
Hydrogen peroxide A B B B PTFE, but unlike PTFE, they have elas-
Isopropyl alcohol A A A tomeric properties, which help them
Metthyl ethyl ketone A A U U maintain their sealing capabilities.
Mineral oil A U B A Table 1 lists the chemical compatibility
NaOH A A B B of Kalrez® perfluoroelastomer parts
Nitric acid A B B A and other elastomers used as sealing
Sodium Hypochlorite A B B A materials in the pharmaceutical and
Soybean oil A C A A food handling industries.
Steam (<150°C) A A C U
Steam (>150°C) A C U U
Toluene A U U A
Xylene A U U A
Maximum Service Temp. 260°C 135°C 200°C 200°C
A = little or no effect ; B = slight swelling and/or loss of physical properties ; C = moderate to
severe swelling and/or loss of physical properties/limited functionality ; U = not suitable or
recommended.
* Data has been drawn from DuPont Dow Elastomers tests and industry sources. Data is presented for use
only as a general guide and should not be the basis of design decisions. Contact DuPont Dow Elastomers
for further information.

Table 2- Typical Physical Properties * *

Compound Kalrez® 6221 Kalrez® 6230
Colour White Black
Durometer hardness, Shore A, points±5 70 75
100% Modulus, psi (MPa) 1,050 1,020
Tensile strength at break(1), psi (MPa) 2,200 2,400
Elongation at break(1), % 150 170
Compression set (2), 70h at 160°C 20 18
(1) ASTM D412, (500 mm/min) ; (2) ASTM D395 B, Size 214 O-rings
** Typical physical properties should not be the basis of design decisions. Contact DuPont Dow Elastomers
for further information.

12
HIGH PURITY SEALS

2. O-rings

2.6. Teflex encapsulated FDA PFA Jacket on solid Viton® core

Availability
The following are examples of such formats but we would
consider any requests for special items not displayed here.

Circular PFA offers higher abrasion resistance to that of FEP and the
Circular shapes are by far the most common and account for cost is some 50% higher.
over ninety percent of the current production. Available from The temperature range is -20° to +204°C.
5 mm inside with no upper diameter limit.
PFA Jacket on solid Silicone core
Oval
Oval shapes are used mainly in ‘inspection hatch’ applica-
tions on chemical vessels. We can produce most of the com-
mon hatch sizes as well as non standards.

Semi circular This combination is preferred for higher temperature applica-

Semi circular shapes are used for both inspection hatch and tions. The PFA jacket shares the same temperature service
heat exchanger sealing. There are no standard sizes availa- limits as the Silicone core. The temperature range is -60 to
ble but tooling costs are very low so most applications are +260°C.
worth serious consideration.
FEP Jacket on hollow Silicone core
Square and rectangular
Square and rectangular shapes are used in many applica-
tions such as heat exchanger plate and pump housings. All
the above shapes (excluding circular) have to be produced
with radiused corners and are priced on application.
Used commonly where low seal loading is encountered. For
slow reciprocating or rotary movement, the hollow core does
FEP Jacket on solid Viton® core not offer quite such energising load thus reducing jacket wear
and premature failure. Temperature range is -60 to +204°C.

PFA Jacket on hollow Silicone core

This is the most popular combination and indeed the most

technically capable in providing a compression seal. The
Viton® core compound has been specifically formulated to
give very low compression set results and this characteristic Used for the same applications as FEP on hollow Silicone
speeds up the somewhat slow memory of the FEP jacket. core but when additional abrasion resistance is necessary to
The temperature range is -20° to +204°C. prolong the seal life. Temperature range is -60 to +260°C.

FEP Jacket on solid Silicone core FEP Jacket on Solid Viton® or Silicone core

This combination again is very popular and this is due to Rectangular and square sections can be produced and we
lower costs against that of Viton® core. Technically it is inferi- have a standard range of gaskets in the price list section for
or to Viton® except when used for low temperature use. The cam action type hose couplings. These provide a far superior
temperature range is -60° to +204°C. alternative to envelope gaskets or solid PTFE joints.
Temperature range is -20°to +204°C.

13
HIGH PURITY SEALS

2. O-rings

2.6. Teflex encapsulated FDA Markets and applications

Approvals There is hardly a market in which our Teflex O-rings are not
currently utilised and they are very well established in the fol-
FDA : Food and Drug Administration. lowing industries: chemical processing and production, oil
This data pertains to the US Federal Food and Drug extraction, petrochemical refining, pharmaceutical produc-
Administration regulations governing the use of fluoropoly- tion, food and drink processing, paint and die manufacture
mers as articles or components intended for use in contact refrigeration engineering, cosmetics and perfumery, automo-
with food. tive components and aerospace engineering.
The Teflon FEP and PFA resins used to produce Teflex may
be used as articles or components to contact food incom- Mechanical seals Valves
pliance with FDA Regulation 21 CFR 177.1550.
This specification includes acceptance by The United States
Department of Agricultrue for direct use in contact with meat
or poultry food products and Food Industries Supply.
Association Inc. for product contact surfacces for Dairy
Equipment.
USP Class VI requirements are met by Teflon FEP and PFA
for use in Pharmaceutical Processing.
Teflon FEP is approved for use with potable water under sec-
tion 5296 certificate no 930716. Filter elements Pumps

Teflon-FEP

21 CFR 177.1550 21 CFR 177.2600 21 CFR 175.105

21 CFR 176.180 21 CFR 177.1520 21 CFR 175.300
21 CFR 176.170

Teflon-PFA
Mixers and vessels Flanges
21 CFR 177.1550 21 CFR 175.105 21 CFR 176.180
21 CFR 175.300 21 CFR 176.170

P.S. Our Viton® can be produced compliant to FDA.

Heatexchangers

14
HIGH PURITY SEALS

2. O-rings

2.7. Cam Action Coupling Gaskets

We used to produce sizes above this
We produce a range of Ncap encapsu- but the demand reduced beyond eco-
lated FEP/Silicone/Viton® Gaskets nomical levels. These gaskets are
which are used as seals for Cam available with Viton® or Silicone solid
Action Couplings. core but with the jacket only in FEP.

A cam Action Coupling as the name Prior to utilising Ncap Gaskets, coup-
implies, is a coupling made usually of ling manufacturers would need to
steel, aluminium, brass or plastic with ascertain which product would be pas-
two cam acting levers used to lock the sing through the coupling in order to
male probe into the female coupler. select a suitable plain rubber gasket.

These couplings are used in a wide The main advantages of using NCAP
range of industries such as Petroleum, Gaskets are their FDA and Potable
Water, Dairy and Food processing, in Water status, their ability to withstand
fact any industry that requires the steam purging for cleaning, their ver-
transporting around of liquids, pow- satile chemical resistance and the
ders or granules. They are often to be benefits of any product suitability.
found fastened to flexible hose ends
which allow tankers to discharge their Other dimensions
loads quickly into containers or stora- It is possible to make gaskets in other
ge vessels. sizes with square or rectagular profi-
les. However, fluoropolymer profiles
Once locked into place by the cams, a are not easy to produce and tooling
seal is required between the probe and costs are extremely high.
the coupler to stop leakage of produce
passing between the two.

Sizes Available
The standard range of sizes we can
manufacture are as follows:

Standard sizes

NB Size OD x ID x Thickness
25.4 (1”) 40.0 26.0 6.50
31.7 (1.1/4”) 49.8 35.0 6.50
38.0 (1.1/2”) 55.6 41.0 6.50
50.8 (2”) 67.0 52.0 6.50
63.5 (2.1/2”) 78.0 60.0 6.50
76.2 (3”) 95.0 76.0 6.50

FD2A600
.
177

15
HIGH PURITY SEALS

2. O-rings

2.8. USP compliant O-rings

We deliver USP class VI O-rings in:

• Viton® 70 black
• PT cured Silicone 70 transparent
• Peroxide cured Silicone 70 transparent
• EPDM 70 black

Our standard program is the AS 568-range.

USP class VI O-rings can be delivered with:

• Custom packaging
• 100% inspection rate
• Sterile packaging
• Cure date
• Batchnumber
• Certification

Join the many companies curing USP class VI products.

The ERIKS USP O-rings are produced to following parameters:

• USP pharmacopoeia class VI-XXII
• Cytotoxity criteria
• CFR Title 21 Section 177.2600
• ASME-BPE Standards
• 3-A Sanitary Standards
• CGMP: Current Good Manufacturing Practices

16
HIGH PURITY SEALS

2. O-rings

2.9. Datasheets
We give a few examples of our O-ring data-sheets. Other data-sheets on demand.

MVQ 70 SILICONE-S1/70 FDA

• Material type : Methyl-vinylsilicone
• Application : Food, beverage and pharmaceutical industry
• Temperature range : -65 à +225°C
FDHAEETS
AS
DAT
PHYSICAL PROPERTIES:
Test method Norm Test-results
Hardness ASTM D 2240 72 +-5° IRHD
Tensile strength at break ASTM D 412 8 Mpa
Elongation at break ASTM D 412 250%
Specific weight DIN 53479 1,20
Compression set - 70h/150°C, on slab ASTM D 395 B 18%

Heat aging 70h/225°C ASTM D 573

Hardness change 5
Tensile strength -16%
Elongation break -20%

L ES
Immersion in ASTM oil n° 1-70/150°C ASTM D 471 P
Hardness change -3°
X AM
Volume change +4% E
Tensile change -2%
Surface tackiness none

Low temperature test Brittleness ASTM D 2137 non-brittle at -65°C

Colour red
Other information: Conform to AMS 3304G-FDA approved.

MVQ 60 SILICONE CORD 714MP FDA

• Material type : Methyl-vinylsilicone, food, pharma, FDA, BGA compliant
• Application : Oils, ozon, hot air
• Temperature range : -60 à +200°C

PHYSICAL PROPERTIES:
Test method Norm Test-results
Hardness DIN 53505 60 +-5° IRHD
Tensile strength at break DIN 53504 7.5 N/mm2
Elongation at break DIN 53505 300%
Specific weight DIN 53479A 1.13
Compression set DIN 53517
24h/175°C, on slab 25%

PROPERTIES:
temperatures till 200°C
steam till 130°C
this is a medical quality

Low temperature test TR10

Colour red
Other information: tolerances foll. DIN 7715 E2.

17
HIGH PURITY SEALS

2. O-rings

EPDM 70 - E 70 Q - FDA
• Material type : EPDM peroxide cured, formulated to FDA to be non-toxic
and non-carcinogenic, Phtalate-free
• Application : Excellent water and steam resistant for use in equipment
for production of foodstuffs for human consumption
• Temperature range : -40 à +125°C, short periods to 150°C

PHYSICAL PROPERTIES: FDHAEETS

Test method Norm Test-results
AS
Hardness ASTM D 2240 70 +-5° IRHD DAT
Tensile strength at break ASTM 412C 11,2 MPa
Elongation at break ASTM 412C 350%
Specific weight ASTM D 1817 1,25
Compression set ASTM D 395/B max; 29%
22h/150°C, on slab
Compression set in water ASTM D 395/B max; 31%
at 130°C, 28 days

Test results following FDA regulations in

boiling water after 7 hours (limit 20 mg/sq in) 0,24
n-hexane after 7 hours (limit 175 mg/sq inch) 4,38

L ES
Low temperature test TR10 -40°C P
Colour black
X AM
Other information: E
Can be produced in small quantities, due to compression-moulding production facilities.

FDA GRADES IN VULC-O-RINGS

• Material type : Neoprene® MC 186 - EPDM MC187 - NBR MC185
• Application : Contact with foodstuff
• Temperature range : -

PHYSICAL PROPERTIES:
Test method Norm Test-results
Hardness ASTM D 2240 70 +-5° IRHD
Tensile strength at break ASTM 412 Neop.: 12,3 MPa
EPDM: 12,6 MPa
NBR: 7,6 MPa
Elongation at break ASTM 412 Neop.: 482%
EPDM: 210%
NBR: 288%
Compression set DIN 53517 Neop.: 42%
24h/100°C, on slab EPDM: 10%
NBR: 20%
Heat aging 168h/100°C
Hardness change ASTM D 573 Neop.: +8°
EPDM: +1%
NBR: +7°
Tensile strength change Neop.: -11%
EPDM: -10%
NBR: +3%

Colour black
Other information: Class 1 FDA. Can be produced in small quantities, due to compres-
sion-moulding production facilities.

18
HIGH PURITY SEALS

2. O-rings

TEFLEX-SILICONE

• Material type : Silicone O-ring encapsulated with FEP or PFA

• Application : Chemical resistant O-ring where low and high
temperatures are required
• Temperature range : -60° to +204°C (FEP) and +260°C (PFA)

PHYSICAL PROPERTIES:
Test method Norm Test-results
FDHAEETS
AS
Hardness ASTM D 2240 70 +-5° IRHD DAT
Tensile strength at break ASTM 412 9 MPa
Elongation at break ASTM 412 250 %
EPDM: 210%
NBR: 288%
Specific weight
Compression set ASTM D 395 B 10 %
22h/100°C, on slab

FEP-Cover
Tensile strength ASTM D 2116 28 Mpa
Hardness ASTM D 2240 56 Duro
L ES
Melting point ASTM D 3418 260°C P
X AM
PFA-Cover (on request) E
Tensile strength ASTM D 2116 28 Mpa
Hardness ASTM D 2240 55 Duro
Melting point ASTM D 3418 305°C
Info: PFA has a better chemical,
heat and wear-resistance than FEP

Colour red (silicone)

translucent (FEP)

Other information:
• On demand we produce silicone hollow O-rings for better flexibility;
• Other silicone colours on demand;
• FEP and PFA are compliant to FDA 21 CFR 177.1550 and USP Class VI for pharmaceu-
tical use;
• PFA withstands 260°C.

19
HIGH PURITY SEALS

2. O-rings

VITON 70 FDA 514641 CLASS 1

• Material type : Copolymer of vinylidene fluoride and hexafluoropropylene.

• Application : Food industry for use in aqueous or fatty food.
• Temperature range : -10° to +200°C

FDHAEETS
PHYSICAL PROPERTIES:
Test method Norm Test-results
Hardness DIN 53519 70 +-5° IRHD
AS
Tensile strength at break DIN 53504 min. 13 MPa DAT
Elongation at break DIN 53504 min. 170 %
Specific weight ASTM D 1817 1,84
Compression set ISO 815 9,6 %
24h/200°C, on o-ring

Heat ageing 70h/200°C DIN 53508

Hardness change max. +3°

FDA regulations:
These compounds has been tested foll. the
FDA Regulations Title CFR 21 Section 177.2600.
L ES
Extraction Hexane 7h 175 mg/inch2 1mg/inch2 P
Extraction Hexane 2h supplementary 4 mg/inch2 <1mg/inch2
X AM
Extraction boiling water 7h 20 mg/inch2 <1mg/inch2 E
Extraction boiling water 2h supplementary 1 mg/inch2 <1mg/inch2

Low temperature test TR 10 ASTM D 1329 -16°C

Colour black

O T H E R D ATA S H E E T S O N R E Q U E S T

This information is, to the best of our knowledge, accurate and reliable to the dta
indicated. The above mentioned data have been obtained by tests we consider as
reliable. We don’t assure that the same results can be obtained in other laborato-
ries, using different conditions by the preparation and evaluation of the samples.

20
HIGH PURITY SEALS

3. Rubber cords

3.1. Silicone FDA cords

This overview gives the stock FDA-Silicone dimensions.
We produce other sections on request.

Silicone cord from stock Silicone cord from stock

VMQ 60 VMQ 60 VMQ 60 VMQ 60
Silicone Silicone Silicone Silicone
714 BF 714 MP 714 BF 714 MP
Tol E2 Tol E2 Tol E2 Tol E2
FDA/BGA FDA/BGA FDA/BGA FDA/BGA
Med/pharma Med/pharma
Ø (mm) Transparent red Ø (mm) Transparent red
2 Art. nr. 10000485 10 Art. nr. 10000498 10000499
Stock X Stock X X
L. max. 600 m L. max. 50 m 50 m
2,50 Art. nr. 10000560 12 Art. nr. 10000500 10000501
Stock X Stock X X
L. max. 600 m L. max. 50 m 30 m
2,62 Art. nr. 10000486 13 Art. nr. 10000561
Stock X Stock X
L. max. 600 m L. max. 50 m
3 Art. nr. 10000487 15 Art. nr. 10000562 10000554
Stock X Stock X X
L. max. 600 m L. max. 20 m 20 m
3,53 Art. nr. 10000448 16 Art. nr. 10000502
Stock X Stock X
L. max. 200 m L. max. 25 m
4 Art. nr. 10000489 10000552 17 Art. nr. 10000556
Stock X X Stock X
L. max. 200 m 200 m L. max. 20 m
5 Art. nr. 10000490 18 Art. nr. 10000503
Stock X Stock X
L. max. 200 m L. max. 25 m
5,70 Art. nr. 10000491 20 Art. nr. 10000563
Stock X Stock X
L. max. 150 m L. max. 25 m
6 Art. nr. 10000492 10000493 22 Art. nr. 10000564 10000559
Stock X X Stock X X
L. max. 100 m 100 m L. max. 25 m 20 m
7 Art. nr. 10000494 10000553 23 Art. nr. 10000557
Stock X X Stock X
L. max. 100 m 100 m L. max. 20 m
8 Art. nr. 10000496 10000495 25 Art. nr. 10000558
Stock X X Stock X
L. max. 100 m 100 m L. max. 20 m
9 Art. nr. 10000497 31 Art. nr. 10000565
Stock X Stock X
L. max. 50 m L. max. 20 m
X = stock X = stock

We produce other cord FDA qualities (Viton®, EPDM, CR, PUR,

etc.) on request. Following compounds are standard compounds:

Production items FDA-cord / profile

• in silicone 25-30-40-50-60-79-80° shore; colour: white
• in silicone HVCR 75 red (lowest compression-set)
• in VulcOring FDA : NBR 75, EPDM 75, Viton® 75; colour: black
21
HIGH PURITY SEALS

3. Rubber cords

3.2. Polyurethane & Polyester cords Quality nature PUR 80A

for the drive and conveyor engineering
The material PUR 80A is mainly used
ERIKS has been working on the pro- for the food industry with direct con-
duction of highly valueable thermoplas- tact with the goods.
tic weldable plastic belts on the basis Meat, fish, fruit, vegetable, bread,
of polyurethane and polyester for the cakes, pastries.
drive and conveyor engineering.

PUR 80A, colour nature

Material characteristics:
• weldable piece belts
• high tractability
• excellent wear and abrasion resistance
• resistance and insensitivity to oils,
greases, dirt and most chemicals
• temperature resistance between
-30°C and +80°C
• high resilience, low permanent stret-
ching
• high static coefficient of friction and
consequently good nonskid ability
even during load variation
• silent and damped running, optimum
adaptability
• drive and deviation via belt head
possible
• non-staining
• Food fastness, FDA approved, phy-
siologically perfect in accordance
with USFDA 175.300 as well as para
31 Section 1 of the German Law for
Food Comodities.
• Profiles are weldable between each
other provided the same basic
material has been used.

22
HIGH PURITY SEALS

4. Oil Seals - V-Seals - ATD-Sealsystem

The ATD-sealsystem is especially

designed for the food and pharma
industry and is ‘dead leg’ free.
ATD can be delivered in Ø 30 up to
500 mm for speeds up to 5 m/s.
All seal elements can be delivered in
FDA execution.

V-Seals

We produce V-seals in FDA execution

in PUR, NBR, CR, silicone and FPM in
all different types. We also produce a
special white FDA Nitrile for the food
industry.

23
HIGH PURITY SEALS

5. Rubber profiles

On the next 4 pages, you find some standard profile shapes we can produce in
FDA-compounds from 20° to 80° Shore.
F
C

U-Profiles in Silicone
art.nr. Prof.nr. A B C D E F Type °Shore A
E B
11050391 ST0081 3.2 7.3 1.8 1.8 5.5 0.6 A 60
11051170 SP0660 3 4 1 1 4 1 A 60
11051181 SP0076 3 5 1 1 3 1 A 60
D 11050396 ST0327 4.5 17 1.5 1.5 15 1.5 A 50
A 11050398 ST0428 4.5 6 2 2 4 1.5 A 20
11050409 ST0742 11 18 4.7 4.7 13 1.5 A 60
11050454 ST1684 5.5 7 2 2 5 1.5 A 60
11050507 ST2786 5.5 4 2 2 2 1.5 A 40
Type A
11051143 SP0060 7.5 20 3 3 17 1.5 A 60
11051149 SP0065 4.5 10 1.5 1.5 8.5 1.5 A 60
11050390 ST0078 10 2 2 8 2 A 60
11050509 ST2805 12 12 4 4 6 2 A 50
11051206 SP0345 5 10 1.5 1.5 8 2 A 60
Standard Quality: 11051223 SP0374 8 19 3 3 16 2 A 60
714 BF transparent - 11050550 ST2881 25 12 11 11 8 3 A 40
FDA and BGA compliant 11051148 SP0640 6 12 1.5 1.5 9 3 A 60
11051175 SP0710 5 5 1 1 4 3 A 60
Minimum: 25 m. 11051183 SP0780 11 15 4 4 10 3 A 60
existing dies 11051195 SP0096 9 25 3 3 22 3 A 60
11051221 SP0373 9 19.5 3 3 17 3 A 50
11050395 ST0313 7 6 1.8 1.8 4 3.5 A 60
11050503 ST2435 7.5 20 2 2 18 3.5 A 60
We produce different FDA compounds 11050393 ST0170 8 13 2 2 11 4 A 60
in our ca 4000 standard moulds. 11050405 ST0629 10 17 3 3 14 4 A 60
Ask for our ‘Profile catalogue’ and our 11050439 ST1596 11 11 3.5 3.5 7.5 4 A 60
‘Silicone catalogue’. 11051145 SP0610 10 20 3 3 17 4 A 60
11051147 SP0630 8 12 2 2 10 4 A 60
11051196 SP0920 13 25 3 6 22 4 A 60
11051197 SP0930 18 8 7 7 5 4 A 60
11050404 ST0564 6.9 12 1.4 1.4 10.6 4.1 A 60
11050397 ST0395 8 8 1.5 1.5 6.5 5 A 60
11050437 ST1029 11 25 3 3 15 5 A 60
11050505 ST2543 13 22 4 4 18 5 A 60
11051146 SP0620 11 15 3 3 10 5 A 60
11051171 SP0670 9 12 2 2 10 5 A 60
11051173 SP0690 11 13 3 3 10 5 A 60
11051180 SP0750 10 12.5 2.5 2.5 10 5 A 60
11051205 SP0344 8 9 1.5 1.5 7.5 5 A 60
11051207 SP0348 11 20 3 3 17 5 A 60
11051208 SP0354 15 30 5 5 20 5 A 60
11050392 ST0139 10 10 2 2 8 5.5 A 60
11050394 ST0306 7.5 7 1.5 1.5 5.5 5.5 A 60
11050431 ST0908 12.5 15.5 3.2 3.2 11 6 A 30
E 11050453 ST1656 12 15 3 3 11 6 A 70
ICON 11050457 ST1912 11 16 2.5 2.5 13.5 6 A 60
SIL DA 11050557 ST3305 10 11 2 2 9 6 A 40
F 11051201 SP0342 12 20 3 3 17 6 A 50
11050552 ST2957 32 20 12.5 12.5 15 7 A 70
11051179 SP0740 16 16 4.5 4.5 11 7 A 60
11051182 SP0770 11 25 2 2 23 7 A 60
11051210 SP0367 25 20 9 9 8.5 7 A 60

24
HIGH PURITY SEALS

5. Rubber profiles

U-Profiles in Silicone
F
C art.nr. Prof.nr. A B C D E F Type °Shore A
11050451 ST1655 14 20 3 3 10 8 A 70
11051203 SP0343 11 8 1.5 1.5 6.5 8 A 60
E
11050399 ST0456 18 12 4 4 8 10 A 30
B
11050407 ST0711 14 17 2 2 13 10 A 60
11050455 ST1862 20 17.5 5 5 14.5 10 A 50
11051174 SP0700 17 16 3.5 3.5 10 10 A 60
D 11051176 SP0720 16 13 3 3 10 10 A 60
A
11051198 SP0340 18 28 4 4 24 10 A 70
11050400 ST0457 23 12 4 4 8 15 A 30
11050502 ST2275 25 45 5 5 40 15 A 70
11050438 ST1343 20 40 2 2 37 16 A 70
Type A
11050456 ST1863 30 21 7 7 18 16 A 60
11050436 ST1005 25 23 4 4 18 17 A 60
11050458 ST2195 26 28 4 4 20 18 A 60
11051172 SP0680 27 18 4 4 14 19 A 60
Standard Quality:
11051178 SP0730 27.5 17 4 4 14 19.5 A 60
714 BF transparent -
11050406 ST0698 35 30 5 5 25 25 A 70
FDA and BGA compliant
11050402 ST0522 31 17 2.5 2.5 14.5 26 A 60
11050504 ST2454 44 15 3 3 12 38 A 60

Minimum: 25 m. 11050322 ST0781 5 7 2 2 4 1 B 60

existing dies 11050370 ST2976 3 8 1 1 7 1 B 70
11051184 SP0800 3 6 1 1 3 1 B 60
11051185 SP0810 3 10 1 1 9 1 B 60
11051187 SP0840 8 12 3.5 3.5 9 1 B 60
11051191 SP0870 8 12 2.5 2.5 9 1 B 60
11050329 ST1952 3.3 9 1.1 1.1 8 1.1 B 70
A
11050379 ST3447 5 15 1.6 1.6 13.3 1.5 B 60
F 11051190 SP0860 4.5 15 1.5 1.5 13.5 1.5 B 60
11050208 ST0155 7 15,5 2,5 2,5 12 2 B 50
11050320 ST0304 5 10 1.5 1.5 8.5 2 B 60
11050326 ST1580 5 15 1.5 1.5 13 2 B 20
15,5

B E
11050363 ST2119 5 14 1.5 1.5 12 2 B 30
11051186 SP0820 6 12 2 2 10 2 B 60
C
11051189 SP0850 6 25 2 2 23 2 B 60
2,5 C
11051192 SP0880 6 12 2 2 10 2 B 60
11051193 SP0890 4 8 1 1 5.5 2 B 60
11050372 ST3207 7.5 13 2.5 2.5 10.5 2.5 B 60
Type B 11050204 ST0038 11 15 4 4 10 3 B 50
11050366 ST2165 6 16 1.5 1.5 13 3 B 60
11050373 ST3230 6 10 1.5 1.5 7 3 B 30
11050377 ST3310 6 14 1.5 1.5 12.5 3 B 60
11050209 ST0237 10 18 3 3 15 4 B 50
11050368 ST2166 7 16 1.5 1.5 14 4 B 60
11050369 ST2335 9 16.5 2.5 2.5 13 4 B 60
11050375 ST3309 7 14 1.5 1.5 12.5 4 B 60

CONE 11050325 ST0946 11 20 3 3 17 5 B 60

I 11050360 ST1958 13 20 3 3 16 7 B 30
SIL DA 11050324 ST0787 12 22 2 2 20 8 B 70
F 11050361 ST2029 12 22 2 2 19 8 B 60
11050328 ST1885 22 30 6 6 20 10 B 60

25
HIGH PURITY SEALS

5. Rubber profiles

Welting sections

art.nr. Prof.nr. A B C D °Shore A

B 11050674 ST0407 3.5 2 9.5 1.5 40
11050672 ST0385 4 2 10 2 40
D
11050842 ST1309 4 2 26 2 50
A 11050875 ST2477 6 2 20 2 60
11050681 ST0489 7 5 22 1 30
C 11050877 ST2733 7 5 27 1 60
11050676 ST0419 7.9 6.3 19 0.8 50
11050632 ST0097 8 4 24 2 60
11050638 ST0282 8 6 16 1.3 50
11050818 ST1139 8 6 20 1 60
11050865 ST1714 8 6 20 1 50
11050589 ST0023 9 7 21 1 60
11050811 ST0818 9 6 26 2 60
11050871 ST1996 9.5 6.5 35 1.5 60
Standard Quality: 11050631 ST0091 10 7 25 1.5 60
714 BF transparent - 11050634 ST0141 10 6.4 24 2 60
FDA and BGA compliant 11050770 ST0760 10 8 35 1 60
11050817 ST1088 10 5 25 1.5 50
11050870 ST1820 10 6 35 2 60
11050879 ST3042 10.5 3 31 3.5 60
Minimum: 25 m.
11050683 ST0681 11 5 30 4.5 50
existing dies 11050779 ST0768 11 3 30 2.5 60
11050816 ST0934 11 7.8 23 2 60
11050878 ST2836 11 4 23 2.5 60
11050814 ST0854 12 8 23 1.3 60
11050848 ST1366 12 8 22 2 60
11050913 ST3137 12 9 22 4 60
11050840 ST1237 12.5 7.5 35 0.5 50
11050682 ST0550 13 11 30 2 50
11050685 ST0713 13 7 32.5 3.5 40
11050835 ST1187 13 10 21.5 2.5 50
11050600 ST0031 14 9 30 2.5 60
11050601 ST0067 14 2 13 1 40
11050635 ST0275 14 10 36 2 60
11050637 ST0281 14 6 30 2 40
11050815 ST0878 14 8 35 2.5 60
11050602 ST0077 14.5 8.5 33 3 60
11050671 ST0311 15 6 30 5 40
11050813 ST0841 15 11 35 3 60
11050678 ST0481 16 7 38 5 40
11050688 ST0724 16 12 35 1.4 60
11050912 ST3068 16 7 36 3 40
11050687 ST0715 18 13 38 3.5 60
11050838 ST1196 18 14 42 2 60
11050874 ST2475 18 12 38 2.6 60
11050633 ST0134 19.5 14.5 39 5 60
11051227 ST0140 20 15 50 2 60
11051230 ST0151 20 12 50 3 60
11050752 ST0733 25 21 38 2 70
CONE 11051228 ST0150 27 20 55 3.5 60
I
SIL DA 11051232 ST0310 30 20 60 4 60
F 11051229 ST0148 40 30 75 3 60
11051232 ST0149 40 24 100 8 60
11050873 ST2262 40 30 67 5 70

26
HIGH PURITY SEALS

E
5. Rubber profiles LICON
SI FDA

Profiles to drawing

8
6

5 9

14

17
8

6
10
12
12
12

Art. n°: 11051585 Art. n°: 11051587 Art. n°: 11051588 Art. n°: 11051590
SP 0001 - 60° Shore SP 0002 - 60° Shore SP 0003 - 60° Shore SP 0004 - 60° Shore

8 10
12 20
10

8
10

8
15 18 25
10

Art. n°: 11051621 Art. n°: 11051622 Art. n°: 11051623 Art. n°: 11051624
SP 0005 - 60° Shore SP 0006 - 60° Shore SP 0007 - 40° Shore SP 0008 - 40° Shore

26
3,2

S
D
12

L
28,4 U N
10 O O
M SI
D U
Art. n°: 11051625 Art. n°: 11051627 R R
SP 0009 - 60° Shore SP 0011 - 60° Shore A T
D X
N E
A A-
10 T
10
S FD
0
0 R
10

0 O
15

F
10

4
20
17

Art. n°: 11051651 Art. n°: 11051652

SP 0015 - 60° Shore SP 0040 - 60° Shore

In different colours and qualities

Minimum: 25 m. - existing dies

27
HIGH PURITY SEALS

6. Rubber moulded parts

Eriks is able to produce moulded parts

in various FDA compounds (NBR,
EPDM, CR, HNBR, PUR, Viton®,
silicone) in different hardnesses from
40 to 90° shore.

Tolerances DIN ISO 3302-1 Silicone moulded parts

diameter (mm) tol. class tol. class tol. class tol. class
M1 (± mm) M2 (± mm) M3 (± mm) M4 (± mm)
0 à 4.0 0.10 0.15 0.40 0.50
4.0 à 6.3 0.12 0.20 0.40 0.50
6.3 à 10 0.15 0.20 0.50 0.70
10 à 16 0.20 0.25 0.60 0.80
16 à 25 0.20 0.35 0.80 1.00
25 à 40 0.25 0.40 1.00 1.30
40 à 63 0.35 0.50 1.30 1.60
63 à 100 0.40 0.70 1.60 2.0
100 à 160 0.50 0.80 2.0 2.5
160 à - 0.4% 0.7% 1.3% 1.5%
Our standard moulded parts are produced according to tolerance class M2.

Eriks produces products to your dra- Note:

wings in all above mentioned qualities. We are willing to make a study with
We use the ISO-tolerances. your engineering-departement.
Ask our documentation ‘standard
We produce small quantities by com- moulded parts’.
pression-moulding as well as large
quantities, using the LSR-method.

28
HIGH PURITY SEALS

6. Rubber moulded parts

Rings to DIN 11851

NW d3 d11 r s
10 12 20 2,3 4,5
15 18 26 2,3 4,5
20 23 33 2,8 4,5
25 30 40 2,8 5
32 36 46 2,8 5
40 42 52 2,8 5
Note:
50 54 64 2,8 5
d3 These rings are delivered in EPDM
65 71 81 2,8 5
d11 black, HNBR black, NBR blue, Viton®
311 78 88 2,8 5
black, Silicone transparent, Eriflon
80 85 95 2,8 5 r
PTFE white. All are FDA compliant.
90 94 104 2,8 5 s
100 104 114 2,8 6
125 130 142 3,5 7
150 155 167 3,5 7

Rings with internal centering ring

NW d3 d11 d15 g s r
10 12 20 10.5 1,5 5 2,3
15 18 26 16.5 1,5 5 2,3
20 23 33 20.5 1,5 5 2,8
25 30 40 26.5 2 6 2,8
32 36 46 32.5 2 6 2,8
40 42 52 38.5 2 6 2,8
50 54 64 50.5 2 6 2,8 d15
d3
65 71 81 66.5 2 6 2,8
d11
80 85 95 81.5 2 6 2,8
r d3
100 104 114 100.5 2 6 2,8
125 130 142 125 2 7 3,5 s
150 155 167 150 2 7 3,5 g
d15
d11

Rings

NW d3 d11 r s
25 30 40 2,8 8
32
40
36
42
46
52
2,8
2,8
8
8
FD2A600
.
50
65
54
71
64
81
2,8
2,8
8
6,5
177
65 71 81 2,8 8
80 85 95 2,8 6,5 d3
80 85 95 2,8 8 d11
100 104 114 2,8 8
r
s

29
HIGH PURITY SEALS

7. Triclover Gaskets / Clamp Gaskets

7.1. Summary Materials for Triclover gaskets

7.2. Triclover gasket Dimensional List

7.3. Certification of Imperial Dimensions

7.4. Platinum Cured Silicone Triclover Gaskets

7.5. Torque-Rite® for Perfect Surface Gasket Systems

7.6. TEF-STEEL: The next generation Triclover gasket

7.7. Criti Clean Pack

7.8. Screen Gaskets

5,2±0,2

1,7±0,25 2,8±0,3
d4
1,1±0,2

d5

R 0,4

R 1,2
d3
0,75°
d6
d6
d5

0,75°
d4

2,1+0,25

FD2A600
. 0
1777.155
17

30
HIGH PURITY SEALS

7.1. Summary Materials for Triclover gaskets

Tef-Steel® is the material of choice if This table indicates general prefer-

the application involves wide tempera- ences. Unique applications may
ture variations, exceptional chemical require further considerations and
resistance (such as hydrocarbons, analysis. When selecting gasket mate-
ethanol, ketones, etc.). rials it is important to consider many
Outstanding service life. factors: resistance to heat, resistance
to SIP, resistance to chemicals like:
Teflon® (PTFE) is the material of choice hydrocarbons, ethanol, ketones, etc,
except if the application requires wide tear strength and flexibility.
temperature variations (leakage will The service life of a material depends
develop). on the application. Many of the materi-
als are acceptable if the expected ser-
Silicone (platinum) is the third choice vice life is very short in duration, how-
due to wide temperature compatibility ever, in extended exposure situations
range and resistance to chemicals. the material can degrade quickly ren-
dering it ineffective or less desirable
Viton® is the fourth choice, however, overall.
service life must be considered and
monitored. This analysis was intended for sanitary
gasket applications specifically.
EPDM is the fifth choice in most appli- Sanitary gasket applications are inher-
cations due to temperature limitations. ently static and can be dynamic.
When different performance attributes
Buna-N is the sixth choice in most are a consideration in dynamic appli-
applications due to temperature limita- cations, Tef-Steel® may be the material
tions and ** does not pass U.S. of choice.
Pharmacopoeia class VI-XXII
Certification and Cytotoxicity.

Triclover reference summary

Gasket Contin. Inter- Pure Pure Process Process Process Colour Comments
Type Stream mittent Water Water Fluids Fluids Fluids
Steam Ambient Hot Ambient Hot Variable
< 0°C
> 100°C
Tef-Steel® 1 1 1 1 1 1 1 Bronze * Maintains seal with wide
temperature variations
Teflon® 1 1 1 1 1 1 3 White * Wide temperature variations may
cause leakage
Silicone 2 2 2 2 2 2 1 Translu- Very flexible low temperature
(platinum) cent *
Viton® 0 3 3 3 3 3 2 Black or Degrades quickly in steam
white applications
EPDM 0 4 4 4 4 4 4 Black or Low pressure steam only
white
Buna-N 0 0 5 5 5 5 5 Black or Not recommended for strong
white acids and ozone
* = No pigmentation

®Tef-Steel is a registered trademark of Rubber Fab Mold & Gasket

®Teflon is a registered trademark of E.I. Dupont
®Viton is a registered trademark of E.I. Dupont

31
HIGH PURITY SEALS

C
7.2. Triclover Gaskets Dimensional List B

Tri-clover gaskets; flanged execution; qualities approved according FDA 177.2600 / 177.1550 / USP class VI
DIN ISO/BS Imperial *** Diameter
Standard Sch 5 Flange(A) Groove Inside Flange(A) Groove Inside
diam.(C) diam. (B) diam.(C) diam. (B)
(mm) (inch)
10 (x) 34,00 27,50 10,2 1,34 1,08 0,40
15 (x) 34,00 27,50 16,2 1,34 1,08 0,64
20 (x) 34,00 27,50 20,2 1,34 1,08 0,80
1” 50,50 43,50 22,9 1,99 1,71 0,90
1” (x) 50,50 43,50 23,10 1,99 1,71 0,91
25 (x) 50,50 43,50 26,2 1,99 1,71 1,03
32 (x) 50,50 43,50 32,2 1,99 1,71 1,27
1 1/2” (x) 50,50 43,50 35,3 1,99 1,71 1,39
1 1/2” 50,50 43,50 35,6 1,99 1,71 1,40
40 (x) 50,50 43,50 38,2 1,99 1,71 1,50
1 1/2” 64,00 56,50 45,2 2,52 2,22 1,78
2” (x) 64,00 56,50 48 2,52 2,22 1,89
2” 64,00 56,50 48,0 2,52 2,22 1,89
50 (x) 64,00 56,50 50,2 2,52 2,22 1,98
2” 77,70 70,50 57,3 3,06 2,78 2,26
2 1/2” 77,70 70,50 60,2 3,06 2,78 2,37
2 1/2” (x) 77,70 70,50 60,7 3,06 2,78 2,39
65 (x) 91,00 83,50 66,2 3,58 3,29 2,61
2 1/2” 91,00 83,50 69 3,58 3,29 2,72
3” (x) 91,00 83,50 73,2 3,58 3,29 2,88
3” 91,30 83,50 73,3 3,59 3,29 2,89
3” 104,80 97,00 84,9 4,13 3,82 3,34
80 (x) 106,00 97,00 81,2 4,17 3,82 3,20
4” (x) 119,00 110,00 97,8 4,69 4,33 3,85
4” 119,00 110,00 97,8 4,69 4,33 3,85
100 (x) 119,00 110,00 100,2 4,69 4,33 3,94
115 130,00 122,40 110,5 5,12 4,82 4,35
4 1/2” 130,00 122,40 110,5 5,12 4,82 4,35
4” 130,20 122,40 110,3 5,12 4,82 4,34
5” 144,70 134,00 121,8 5,70 5,28 4,80
125 (x) 155,00 146,0 125,2 6,10 5,74 4,93
5 1/2” 155,00 146,0 135,9 6,10 5,74 5,35
6” 167,10 157,00 147,2 6,58 6,18 5,80
6” 182,80 174,30 163,1 7,20 6,86 6,42
150 (x) 183,00 174,30 150,2 7,20 6,86 5,91
6 5/8” 183,00 174,30 163,3 7,20 6,86 6,43
8” 218,00 207,00 198 8,58 8,15 7,80
200 (x) 233,50 225,00 200,2 9,19 8,86 7,88
8 5/8” 233,50 225,00 214,1 9,19 8,86 8,43
8” 233,60 225,00 213,9 9,20 8,86 8,42
10” 267,20 258,00 246,5 10,52 10,16 9,70
10” 287,50 278,70 266,7 11,32 10,97 10,50
12” 319,00 308,00 298 12,56 12,13 11,73
12” 338,50 329,00 315,8 13,33 12,95 12,43
(X )= Standard items in different compounds
*** = see next pages for more information on imperial dimensions

32
HIGH PURITY SEALS

7.3. Certification of Imperial Dimensions

Triclover gasket material guidelines The gasket materials considered are

for imperial dimensions Tef-Steel® (Teflon/Stainless Steel),
Teflon® (PTFE), Silicone (platinum),
This information has been carefully Viton®, EPDM and Buna-N.
prepared to help in selecting the cor-
rect elastomer or perfluorocarbon uti- The 3 main goals are:
lized in high purity sanitary hygenic • To protect products from contamina-
seals where critical pure water, tion, spalling, particulates and TOCs
process fluids (both ambient and hot), resulting from the use of improper
and SIP environment exist. sanitary gasket material.
The intention is to consider the differ- • To protect facilities from unnecessary
ent uses, applications and conditions downtime associated with sanitary
to determine the most favorable gas- gasket failure and replacement from
ket material for each application. The use of improper gasket material.
following criteria is used in determining • To provide a standard of consistency
correct sanitary gasket materials. of sanitary gaskets selection between
multiple facilities.
• USP Pharmacopoeia Class VI-XXII
Certification Most decisions driving gasket type
• Cytotoxicity Criteria selection are based on chemistry, tem-
• CFR Title 21 Section 177.1550 perature, exposure limits, USP, FDA
• CFR Title 21 Section 177.2600 qualifications, and curing methods.
• Traceability: Lot and Batch
• Certification: Lot and Batch
• ASME-BPE Standards
• USD Standards
• 3-A Sanitary Standards
• Current Good Manufacturing
Practices (CGMP)
• Manufacturer data and specifica-
tions
• Consultation with various pharma-
ceutical users

33
HIGH PURITY SEALS

7.4. Platinum Cured Silicone Triclover gaskets

A quality overview Meets High Pharmaceutical Standards Superior Tear Resistance

• USDA Pharmacopoeia Class VI-XXII Rubber Fab manufactures all Platinum
Rubber Fab Purity: Certification Silicone Gaskets from milled gum sili-
The complete Platinum Cured • Cytotoxicity Criteria cone. When compared to LIM (liquid
Silicone Program. • CFR Title 21 Section 177.2600 injection molding) silicone, milled gum
• Traceability: Lot and Batch silicone gaskets have superior resis-
High purity platinum cured silicone • Certification: Lot and Batch tance to tearing and deformation.
gaskets are the ideal choice for use in • ASME-BPE Standards
production facilities of fine pharma- • USD Standards Complete Choice in Platinum Cured
ceutical, biotechnology, high -purity • 3-A Sanitary Standards Silicone Gaskets and Products
water, injectables, food and beverage • Current Good Manufacturing Rubber Fab Mold & Gasket’s Platinum
products. Rubber Fab’s platinum Practices (CGMP) Cured Silicone Gaskets are available in
cured silicone gasket withstands tem- all gasket designs and colors. They are
perature extremes, radiation, corona, The platinum Cured Silicone Gasket interchangeable with standard sanitary
ozone exposure*, moisture and steam. When considering silicone gaskets, clamp gaskets and work with Rubber
Due to its smooth finish, platinum platinum cured is the most favorable. Fab’s Torque-Rite (see next page).
cured silicone resists product adhe- The method curing has an effect on the Additional product lines are also avail-
sion. These odorless, tasteless, non- amount and type of extractables sili- able including Smart Gaskets, platinum
toxic gaskets maintain product integri- cone will emit. Platinum curing mini- cured silicone sheets, O-rings and
ty and can be autoclaved, irradiated mizes these reactions with the respec- platinum cured silicone tubing.
and gas sterilized. And because there tive process fluids. All gaskets are post
is no Benzoic Acid residue, rubber cured and will not cause cell mutation
Fab’s Platinum cured silicone gaskets or growth retardation, maintains and
provide you with the ultimate, high upholds ultra-pure water and CGMP
pure, contact surface. process fluid standards.
What you put in, you get out.
The choice is clear
• Eliminates particulates Platinum Equals Absolute Purity
• Non-pyrogenic When compared with Peroxide Cured
• No pigmentation silicone Gaskets, platinum Cured is
• No plasticizers clearly the superior choice. Peroxide
• No Benzoic Acid curing will always have residuals from
• Non-toxic the curing additive. Its conversion,
• High/low temperature range: Benzoic Acid, will result in an unwant-
-100°F to 450°F ed surface condition causing product
• S.I.P. up to 30 psi at 123°C conatmination. Platinum curing elimi-
• No reversion nates this problem.
• Smooth bore
• Non leaching
• Odorless
• Tasteless
• Superior tear resistance

34
HIGH PURITY SEALS

7.5. Torque-Rite for Perfect Surface Gasket System

Torque-Rite

Presenting Rubber Fab’s Perfect

Surface Gasket System
The perfect union of Torque-Rite and
the Perfect Surface Gasket:
Torque-Rite allows you to control Direction of flow
compression and expansion while
maintaining constant inch/pounds
force assuring a Perfect Surface ID
when used with a Perfect Surface
Gasket. Torque-Rite eliminates the
problems associated with over- or
under-tightening a gasket which can Damming: Under-tightening Perfect Surface Gasket System:
An over-tightened May allow leakage. Torque-Rite and Perfect Surface
lead to an unsanitary system.
gasket extrudes into Can form concave Gasket eliminates the concerns
the pipe, prevents surfaces at the prod- associated with over- and
Compression control is easy draining, and allows uct side of the gasket under-tightening a sanitary
when tightened, the Torque-rite’s self- deposits to build up affecting free frainage gasket. Assures that gasket ID
limiting internal mechanism will make behind the gasket. and cleaning. matches pipe ID.
an audible ‘click’ signaling the user
they have reached proper inch/pounds
force. If further tightening is attempt-
ed, there will be more ‘clicks’ but no
additional application of force on the The perfect Surface Gasket System
gasket (if emergency conditions arise,
the Torque-Rite has a built-in manual
override feature). Compression
Torque-Rite Control
= = Perfect Surface
Problems with over-tightening or Perfect Surface Expansion
under-tightening a gasket Gasket Control
Over-tightening can tear or damage a
gasket and can also cause a damming
effect inside the pipeline. A torn or
extruded gasket can hold soil and
bacteria. Under-tightening leaves an
undesirable concave area at the gas-
ket allowing soil and bacteria to
become entrapped.
Both conditions should be avoided in
a sanitary system.

Maintaining a ‘Perfect Surface’

Sanitary System
By maintaining a constant force on a
perfect Surface Gasket with the
Torque-Rite, gasket ID is maintained
lowering bacteria count and enhancing
product integrity.
a perfect Surface sanitary system is
assured.

35
HIGH PURITY SEALS

7.5. Torque-Rite for perfect surface gasket system

Torque-Rite Specifications Driving Hex

Material: Stainless Steel .875 (7/8”)
Hardness: 48 Rockwell
Overall height: 1.670” Body
Diameter
Driving hex: .875 (7/8”)
.875”
Body diameter: .875”
Overall
Override Flats: .8125 (13/16”)
Height
Lot Traceable 1.670”

Override
Perfect Surface Gasket Benefits: Flats
.8125 (13/16”)
• Lower bacteria counts
• Maintains/enhances product integrity
• Assures that gasket ID matches pipe ID
• Passes US Pharmacopoeia class VI-
XXII certification
• Passes cytotoxicity criteria
• Complies with title 21 CFR 177.2600
• Complies with USDA and 3-A sanitary
standards
• Conforms to CGMP (Current good
Manufacturing Practices)

Torque-Rite Features Torque-Rite is avalable in two models:

• An audible ‘click’ indicating correct
inch/pounds force
• Maintains constant 30 or 50 LBS LBS
30 IN./ 50 IN./
inch/pounds force TR TR

• Manual override feature

• Retrofits all sanitary clamps, mini
through 6”
• Works in rupture disk applications
• Works with all Smart Gasket™ prod-
ucts including spore trap, thermocou-
pler and sampler
• No torque wrench or special training Model TR30 Model TR50
required Perfect Surface Perfect Surface
• User friendly Gasket Material: Gasket Material:
Buna Teflon®
Silicone Tef-Steel®
Viton® Teflon® Envelope
EPDM
Criti-flex

36
HIGH PURITY SEALS

7 . 6 . T E F - S t e e l ®: T h e n e x t g e n e r a t i o n T r i c l o v e r g a s k e t

Presenting TEF-Steel®: TEF-Steel®: the next generation gasket

the S.I.P.* Leak Proof Solution TEF-Steel easily outperforms standard
solid PTFE and PTFE envelope gaskets
There’s a new standard in S.I.P. gas- under even teh most demanding S.I.P.
ket stability and longevity. With a pharmaceutical applications. In fact,
unique 50/50 blend of non-pigmented TEF-Steel lasts at least five times
PTFE/316L passivated staness steel longer in most applications!
and Teflon, TEF-Steel® is one tough
gasket. Prevents System Downtime
The unparalleled strength of TEF-Steel
Tough under S.I.P. conditions eliminates maintenance needs and
• Superior creep resistance helps prevent system downtime by
• Minimal thermal expansion eliminating cold flow creep. This makes
• Excellent chemical resistance TEF-Steel ideal for sanitary steam pipe
• No pigmentation connections in both extreme cold
• passivated to eliminate rouging (down to -20°F) and hot conditions (up
• Stops leaks when torqued correctly to 450°F). TEF-Steel gaskets are aval-
(50 in.lbs.**) able in a variety of sanitary standard
• No gasket extrusion into the sanitary sizes - from 1/2” to 12” diameter - to
tube I.D. service virtually any S.I.P. application.
• No obstruction of flow Plus, TEF-Steel works with the Torque-
• Non-stick surfaces Rite® perfect Surface Gasket System.
• Excellent expansion and contraction This eliminates the potential for bacteri-
stability al entrapment problems caused by
• Maintains sealing stability in ∆T over-tightening or under-tightening
processes gaskets.
• I.D. Pharmaceutical finish

Meets High Pharmaceutical

The Exclusive Properties of TEF-STEEL
Standards
• USDA Pharmacopoeia Class VI-XXII Property ASTM Method Value
Certification Specific Gravity D792 3.45
• Cytotoxicity Criteria Tensile Strength D4894 1928psi
• CFR Title 21 Section 177.1550 Elongation at Break D4894 270%
• USD and 3-A Sanitary Standards Compressive Stress at 1% D695 832
• Current Good Manufacturing Compressive Stress at 5% D695 2590
Practices (CGMP) Compressive Modulus D695 84200
• ASME-BPE Standards Hardness D2240 68
Temperature Low Continuous -20°F
Temperature High Continuous 450°F
* = Steam In Place
** = Torque-Rite Model TR50

37
HIGH PURITY SEALS

7.7. Criti Clean Pack

Rubberfab will work with you to devel- Rubberfab gaskets are WFI cleaned
op and supply custom gasket pack- and dried utilizing filtered nitrogen in a
ages and to provide you with exactly Class 100 clean room. Our ready-to-
the assortment of gaskets needed for use Criti Clean gasket kit is packaged
equipment setup or maintenance in a see-through ‘Vis-U-All II’ pack
changeouts. Convenient and econom- equipped with temperature indicator
ical custom kits and packaging are dots that show completed sterilization
another way our company is commit- when steam or gas sterilized.
ted to customer satisfaction.
The Criti Clean Pack is available in a
package of 1, 6, 12 or 24 gaskets and
can be custom assembled in a kit con-
forming to your specific changeout
requirements.

38
HIGH PURITY SEALS

7.8. Screen gaskets

Fluid Conditioning Gaskets Rubber Fab Mold & Gasket’s Fluid

Rubber Fab’s Sanitary Fluid Conditioning Program
Conditioning Gaskets are designed to Rubber Fab once again offers a gasket
be interchangeable with standard san- program for your consideration and
itary clamp gaskets. employment. For the first time, you
can choose the USP Class VI elas-
Metallic Screens tomer of your choice and in a variety
• 304, 316 or 316L stainless steel of mesh sizes, 20 micron through 4
• Hastelloy mesh, which are all normally available
• Stainless Steel perforated for shipment on the day of order. We
hope after you have reviewed the
Non-Metallic Screens Rubber Fab Mold & Gasket Fluid
• Polypropylene Conditioning Program, you will once
• Teflon again discover the Rubber Fab differ-
• Mesh selection limited ence.
• Removable insert gasket holder only
Materials Available
Available meshes Rubber Fab manufactures fluid condi-
For in stock product, please see the tioning gaskets in the following elas-
Rubber Fluid Conditioning Reference tomers:
Chart on page 39. • Viton®
• EPDM
Available sizes • Platinum Silicone
• Mini. 1/2”, 3/4” • Buna-N* Removable disc inserts and
• 1”, 1 1/2”, 2”, 2 1/2”, 3”, 4” sanitary • Teflon® (fluoropolymer) holders sold separately
screen gaskets
Also Available
Applications • Perforated fluid conditioning gas-
• Prefiltration for critical membrane kets. Size range: 1” - 6”.
filters • Complete elastomer selection
• Coalescence of water vapor from • Removable sanitary gasket holders
process exhaust lines available for all discs
• Liquid gassing or degassing • Screen disc inserts
• Large particulate removal before fill • Perforated disk inserts
and finish • Orifice plate inserts
• Turbulence generation for enhanced
mass or heat transfer (*) Buna-N does not pass USDA Pharmacopoeia
• Protection for pump, check valves Class VI-XXII Certification and Cytotoxicity.
and other components
• particulate removal in sterile filling
operations
• Sparging
• Chromatography purification

Meets High Pharmaceutical

Standards
• USDA Pharmacopoeia Class VI-XXII
Certification
• Cytotoxicity Criteria
Removable disc inserts and
• Title 21 CFR 177.2600
holders sold separately
• USDA and 3-A Sanitary Standards
• Current Good Manufacturing
Practices (CGMP) Perforated fluid conditioning gaskets
• ASME-BPE Standards

39
HIGH PURITY SEALS

7.8. Screen gaskets

Range of particulate Elimination

Gluid conditioning gaskets provide for
the most comprehensive range of 10 Mesh
stainless steel mesh and filter cloth
which provide for particulate elimina-
tion to protect fill and finish sterile pro-
ducts. As illustrated, you can see
demonstrated a progressive particula-
te elimination utilizing 10, 20, 40, 60
and 100 mesh screens. We provide
when requested, 20 micron screen
and cloth construction. 20 Mesh

We are also able to provide gaskets

which will allow you to remove your
screen disc, accept an orifice plate
disc or membrane of choice, providing
the membrane thickness does not
exceed .032 inches.
40 Mesh
Sock designs are also available. Sock
designs are inserted into the ID of your
stainless steel tubing and provide filt-
ration for a greater soil burden.

Please do not hesitate to contact us

regarding your special needs and
thoughts as it pertains to your fluid
conditioning program. 60 Mesh

Photography presented here is actual

size pertaining to 10, 20, 40, 60 and
100 mesh sizes. For full product avai-
lability, refer to the Fluid Conditioning
Reference Chart on the next page.
Screen construction is Dutch Twill
weave for maximum strength and 100 Mesh
minimum pressure drop. Perforated
1/32 gaskets are also available.

If elimination of particulates are critical

to the CGMP in your injectable filled
product, chromatography, columns,
upstream particulate removal, down-
stream, filtration, as a reassurance,
consider Rubber Fab Mold & Gasket
Fluid Conditioning Technology.

40
HIGH PURITY SEALS

7.8. Screen gaskets

Fluid Conditioning Reference Chart

Approximate Square Mesh Filter Cloth
Retention Opening Mesh Wire Cloth Mesh Cloth
Microns (inches) (wires/inch) Diameter Thickness Thickness
5156 0.2030 4x4 0.047 0.094 - -
3340 0.110 6 x 6* 0.035 0.056 - -
2464 0.0970 8x8 0.028 0.056 - -
1905 0.0750 10 x 10* 0.025 0.050 - -
1532 0.0603 12 x 12* 0.023 0.048 - -
1306 0.0514 14 x 14 0.020 0.040 - -
1130 0.0445 16 x 18 0.018 0.036 - -
1081 0.0426 18 x 18 0.013 0.026 - -
979 0.0386 18 x 18 0.017 0.034 - -
864 0.0340 20 x 20* 0.016 0.032 - -
703 0.0277 24 x 24 0.014 0.028 - -
516 0.0203 30 x 30* 0.013 0.026 - -
381 0.0150 40 x 40* 0.010 0.020 - -
318 0.0125 50 x50* 0.0075 0.015 - -
233 0.0092 60 x 60* 0.0075 0.015 - -
225 - - - - 16 x 100 0.038
168 0.0065 105 x 105 0.0030 0.006 - -
160 - - - - 24 x 110 0.035
140 0.0055 80 x 80* 0.0070 0.014 - -
140 0.0055 100 x 100* 0.0045 0.009 - -
120 - - - - 30 x 160 0.023
118 0.0046 120 x 120 0.0037 0.007 - -
110 0.0043 120 x 120 0.0040 0.008 - -
103 0.0041 150 x 150* 0.0026 0.005 - -
96 - - - - 20 x 200 0.0325
93 0.0037 150 x 150* 0.0030 0.006 - -
90 - - - - 20 x 250 0.026
85 - - - - 40 x 200 0.018
83 0.0033 180 x 180 0.0023 0.005 - -
80 - - - - 120 x 160 0.011
75 - - - - 30 x 250 0.028
74 0.0029 200 x 200* 0.0021 0.004 - -
70 - - - - 120 x 180 0.011
69 0.0027 200 x 200* 0.0023 0.005 - -
65 - - - - 120 x 200 0.011
61 0.0024 250 x 250 0.0016 0.003 - -
60 - - - - 28 x 500 0.016
50 - - - - 120 x 330 0.010
43 0.0017 325 x 325 0.0014 0.003 - -
40 - - - - 120 x 400 0.010
35 - - - - 120 x 500 0.010
30 - - - - 80 x 700 0.010
30 - - - - 120 x 800 0.009
25 - - - - 20 x 350 0.022
25 - - - - 200 x 600 0.006
21 - - - - 200 x 830 0.006
10 - - - - 200 x 1150 0.006
* = Stock items in stainless steel 316.
Also available: Hasteloy, Membrane Inserts, and Teflon Screen (limited mesh for removable gasket holders only).

41
HIGH PURITY SEALS

8. Kalrez® sanitary seals

Kalrez® parts made from compounds Sealing Element

6221 and 6230 meet the extractive of Kalrez
requirements of 21CFR177.2600(E)
and may be used for repeated use in
compliance with the Food, Drug and
Cosmetics Act and all applicable food
additive regulations. Kalrez® parts
made from compounds 6221 and
6230 have been tested in accordance
with the United States Pharmacopeia Stainless Steel
Class VI (USP Class VI) testing proto- Retaining Ring
col.
Testing using the protocols cited
above was performed by an external
testing facility in compliance with 21
CFR, Part 58 Good Laboratory
Practice for Nonclinical Laboratory
Studies.
6221 and 6230 offer excellent steam
cycling resistance and reduce
extractables from sealing materials to
trace levels.

New development from

DuPont-Dow Elastomers in 2002!

42
HIGH PURITY SEALS

9. Hydraulic & pneumatic seals / wipers

On our Master-CAM-machine, we pro-

duce any shape of hydraulic seal to
your application. Standard FDA material
is Erthane G-FDA, a urethane-based
seal.

POLYURETHANE U 203 FDA

• Material type : Prepolymer based on glycols and MDI

• Application : Water and oil-based foodstuff
• Temperature range : Up to +80°C in water continious use/oils 100°C cont. use

PHYSICAL PROPERTIES:
Test method Norm Test-results
Hardness DIN 53505 95 +-2° Shore A
Tensile strength at break DIN 53504 +40 MPa
Elongation at break DIN 53504 460%
Specific weight 1.15
Compression set DIN 53517 31 %
3 weeks / 70°C

Tear Strength DIN 53515 135 KN/m

Abrasion Loss DIN 53516 -35 mm3
100% Modulus DIN 53504 +10 MPa
Hardness at -5°C DIN 53505 96° shore A
Hardness at +80°C DIN 53505 93° Shore A

Chemical food stuff resistance:

Water 80°C, demineralized water, salty water, mineral and vegetable oils, peanut oil,
beer, alcohols. Greases. Resists also HFA, HFB and HFC fluids.

ERIFLON PTFE seals

We produce FDA compound PTFE

seals with FDA O-rings on request.
See different shapes.

43
HIGH PURITY SEALS

10. ERIFLON PTFE Lip Seals, Garlock® PS-seals, Dynalipseals

Eriflon’s PTFE Lip Seal was introduced • Greater chemical resistance

in the early 1970’s. The seals were • Lower friction
designed to bridge the gap between • Capable of surface speeds to +30
conventional elastomer lip seals and meters/second
mechanical face seals. Hostile environ- • Works to temperature extremes
ments such as extreme temperatures, (-70°C to +250°C)
aggressive media, high surface • Has extended seal life in dry or
speeds, high pressures, and lack of abrasive media
lubrication forced the designer to • Handles pressures to 35 bar
specify the expensive and complicated • Shaftspeeds up to 36 m/s
mechanical face type seals. Eriflon’s
PTFE Lip Seal provides the designer a Successful Applications:
significant iprovement in performance • Hydraulic motors and pumps
over elastomer lip seals at a much • chemical pumps
lower cost than the mechanical face • Rotary unions
seal. • Vacuum pumps
Due to our unique manufacturing • Blowers
capabilities we are able to quickly • Drilling and tapping spindles
supply the geometry and material • High-speed gearboxes
which best meets your requirements. • Crankshafts of engines and com-
This is accomplished by utilising pressors

FDA
modern computer-controlled equip- • Robotics
ment and the stocking of semi-finished • Pharmaceutical and food processing
components. equipment
Eriflon PTFE Lip Seals solve difficult • Mixers
applications which are not addressed • Chemical processing equipment
by conventional elastomer seals. We • Actuators
exceed the performance of elastomer • Alternators and generators
lip seals in the following areas: • Encoders
• Radar/targeting devices

Note:
• We stock the unique Garlock® PS-Seal in ca. 100 different dimensions
• PS-Seals are seen as the best PTFE-seals worldwide
• PS-Seals give the best results in lifetime-tests under the most difficult circumstanses
• Some types also have BGA-approval

44
HIGH PURITY SEALS

10. ERIFLON PTFE Lip Seals, Garlock® PS-seals, Dynalipseals

Element materials

Material Name and Application details

Code description
SEALING LIP MATERIALS :.
72 Rulon® 641 Meets FDA requirements. Moderate wear and heat resistance. Suitable for use
Proprietary filled PTFE on soft shafts such as 316 Stainless Steel.
White colour
F8 Gylon 3510 Extreme wear resistant material for use in high-speed applications in dry or non-
Special filled PTFE lubricating environments. Excellent material for use in water. Requires a shaft
White colour hardness of 55 HRC minimum.
• Gylon white complies with FDA 21CFR1550.
• It meets ingredient and extract requirements.
• The fillers are acceptable under 21CFR 177.2600
• Branding ink complies with FDA 21 CFR.175.300
METAL COMPONENTS :
M1 Low-carbon steel Used for outer case, inner case and washers. Low cost.
Limited corrosion resistance.
M2 Aluminium Lightweight material used for outer case, inner case and washers. Low cost.
Limited corrosion resistance.
M3 Stainless Steel 304 Used for outer case, inner case, washers and support rings.
Good corrosion resistance.
M4 Stainless Steel 316 Used for outer case, inner case, washers and support rings.
Good corrosion resistance.
M5 Stainless Steel 316 TI Used for outer case, inner case, washers and support rings.
316 Stainless Steel with titanium for superior corrosion resistance.

Rulon® is a registered trademark of Furon Company. Ekonol® is a registered trademark of SOHIO Company.
Ask for our technical documentation.

45
HIGH PURITY SEALS

11. Eriseals

We have different executions.

Please ask:
• Our technical ‘omniseal documentation’
• FDA execution filled with silicone

Temp.: -70/+260°C Temp.: -70/+260°C Temp.: -70/+260°C Temp.: -70/+260°C

Velocity: 15 m/s Velocity: 15 m/s Static Static
Helicoidal spring V-spring V-spring V-spring
200 bar 450 bar Type: 320-323 Type: 348-349
Type: 230-239 Type: 220-225

FDA, filled with silicone

Omniseal 400A can be supplied with

an FDA- silicone-filling.

Type RS

In this unique design the inserted stain-

less steel spring is totally protected by
the PTFE-coating on the media side.
Applications with high temperatures,
defined friction forces and very elastic
behaviour are characteristics for this
sealing element. Even extra-pure
media can be conveyed or sealed off
with this seal, where the medium may
not get into contact with the metal.
This type is FDA approved and admit-
ted for food and pharmaceutical drugs.

Type JS

The series JS is a variant of the RS

type, but with a machined synthetic
material jacket. Available in all sizes
without additional costs. Mostly for
small quantities. The jacket is available
in PTFE or also in FDA approved
UHMW-Polyethylene.

46
HIGH PURITY SEALS

12. Hoses

RX-LABO SILICONE MEDICAL 60° Shore transparent

• "Medical Grade" : ST-EC-60-01

• FDA, USP and BGA compliant

Temperature: -70 °C up to +200 °C

Insertion : None

Working pressure : No

RX-LABO SILICONE MEDICAL

ERIKS art.nr. Int. diameter Wall thickness Weight Length coil

mm mm mm kg/m
10015203 2 1.5 0.02 25
10015204 2 2 0.03 25
10015205 3 1 0.03 25
10015206 3 2 0.04 25
10015207 4 1 0.03 25
10015208 4 1.5 0.04 25
10015209 4 2 0.05 25
10015210 5 1 0.04 25
10015211 5 2 0.05 25
10015212 5 3 0.09 25
10015213 6 1 0.03 25
10015214 6 1.5 0.04 25
10015215 6 2 0.06 25
10015216 6 3 0.10 25
10015217 7 1 0.04 25
10015218 8 2 0.07 25
10015219 8 3 0.13 25
10015220 8 4 0.18 25
10015221 9 1 0.07 25
10015222 10 2 0.10 25
10015223 10 2.5 0.12 25
10015224 10 3 0.15 25
10015225 12 2 0.12 25
10015226 15 3 0.20 25
10015227 18 3 0.22 25
10015202 19 3 0.25 25

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HIGH PURITY SEALS

12. Hoses

RX-SILIPRESS MEDICAL 70° Shore

• "Medical Grade"
• FDA, USP and BGA compliant

Temperature: -60 °C up to +180 °C

Insertion : Glassfiber

RX-SILIPRESS MEDICAL

ERIKS art.nr. Internal Wall Working Bend Weight Length

diameter thickness Pressure radius coil
mm mm bar mm kg/m m
3 3 20 10 0.08 25
10015230 4 3 20 10 0.09 25
5 3 15 15 0.09 25
10015231 6 3 12.5 15 0.09 25
7 3 11 18 0.10 25
10015232 8 3.5 10 28 0.12 25
10015233 10 3.5 9 38 0.12 25
10015234 12.5 3.5 9 50 0.15 25
10015235 16 5 7.5 60 0.20 25
10015236 19 5 7.5 60 0.20 25
10015237 25 6 5 100 0.25 25

Technical data at 20 °C. .

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HIGH PURITY SEALS

12. Hoses

RX-DELIFIXX

• A flexible suction and discharge Temperature:

hose for use in wine cellars and bre- tube shortely up to +95 °C for water,
weries, in the food and beverage lowest temp. at which the hose remains
industry. flexible: -35°C, brief steam;
sterilisation up to max. 130°C/30 min.
• White EPDM-Tube, food quality,
high temperature-resistance to Safety factor : 3,15 : 1
aggressive cleaning.
Tube : EPDM, white, smooth, food quality
• Suitable for conveying alcohol (up to
40%), soft drinks and non-fatty Reinforcement : textile, wrapped
foods.
Cover : NR/SBR, red, smooth,
• For the application of cleaning abrasion resistant, cloth impression
liquids please see our separate infor-
mation sheet. Identification :
• Blue marking stripe with text:
• The hose complies with the “RX DELIFIXX BEER/WINE 12 BAR D”
‘Recommendation XXI, Category 2’ of • Embossed text:
BGVV, KTW and FDA. “RX DELIFIXX EPDM D diam. 12 bar ”

RX DELIFIXX

ERIKS art.nr. Internal Wall Working Vacuüm Bend Weight Length

diameter thickness pressure radius coil
mm mm bar % mm kg/m m
11088581 13 5 12 50 50 0.40 40
11088582 19 5 12 50 100 0.55 40
11088583 25 6 12 50 150 0.85 40
11088584 32 8 12 50 170 1.45 40
11088585 38 9 12 50 200 1.85 40
11088586 40 10 12 50 250 2.25 40
11088596 50 11 12 50 350 2.95 40
11088597 65 12 12 40 450 4.05 40
11088598 75 15 12 40 600 6.10 40
11088599 80 15 12 30 650 6.40 40
11088600 100 15 12 20 750 7.75 40

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HIGH PURITY SEALS

12. Hoses/Flex-Rite

Non glass sight ‘glasses’ The material is capable of being used

at temperatures of up to 205°C but as
Following extensive research and strin- it is a thermoplastic the working pres-
gent testing, Flex-Rite have developed sure is greatly affected by the opera-
the use of and FDA approved thermo- ting temperature and application
plastic translucent shatterproof tubing details must be taken into account
as a replacement for glass which pro- when determining suitability. Under
vides a safe, hygienic and durable ans- normal CIP conditions it is not always
wer to in-line sight glasses and vessel necessary to incorporate the addition
level indicators as used in the Brewing, of a S/S safety guard for sizes up to
Food & pharmaceutical industries. and including 2”. Sizes above 2” are
supplied incorporating S/S safety
It is unique in that it has a totally non- guards as standard.
stick surface, does not discolour and is
virtually indestructible from the point of All end fittings in contact with the pro-
view of operator misuse, will withstand duct are manufactured in 316 S/S and
thermal shock, steam sterilisation and are permanently attached by means of
as it is one of the most chemically inert swaging which produces a totally
materials available to date, is imper- hygienic coupling eliminating any
vious to all cleaning agents such as ingress of product between the liner
caustics/acids etc. and the tube l/dia., identical in fact to
that of our hose assemblies using our
The tubing is available in 1/2”, 3/4”, Lactafix Coupling System.
1.1/2”, 2”, 2.1/2”, 3” and 4” nominal
sizes and can be supplied with a full
range of hygienic end connections to Shatter proof for extra safety
Flex-Rite’s standard lengths or alterna-
tively can be made-up to interchange The Flex-Rite Sight ‘Glass’, because of
with existing sight glasses of propriet- its thermoplastic construction, can
ary manufacture. withstand the roughest of treatment.
Even the most heavy handed operative
will have difficulty inflicting damage - in
fact it has been tested with hammer
blows just to prove it can take the
knocks.

50
HIGH PURITY SEALS

13. Gaskets

13.1. Rubbergaskets

Following sheets and gaskets are

produced in FDA-compound, some in
KTW compound.

Standard Industrial qualities

Material Hardness Suitable for : Temp. S.G Tensile strength Remarks Stock Avail-
+ colour oil fuel acids logen ozon ±°C kg/m3 N/mm2 Elong-. able
° Shore ation sizes
% (mm)
GU 67 65° 4 4 2 3 3 -45/80 1,30 10 600 KTW approved for - 1-20
NR-SBR white contact with water inlay:
1,5-6
GU 48 50° 4 4 2 2 2 -30/90 1,27 12 550 both sides smooth 1-10 1-30
white white for food industry
Lebensmittelecht
EPDM 65 THT 65° 4 4 3 3 2 -30/150 1,12 13 300 KTW approved - 1 à 10
black for water
EPDM 90 THT 90° 4 4 3 3 2 -30/150 1,26 8,5 100 KTW approved - 1 à 10
black for water
EPDM THT 50° 4 4 2 2 1 -40/150 1,68 12 350 KTW approved - 1-10
black VW 2.8.1.650
best quality for steam
peroxidisch vernet
ERICA SILICONE 60° 3 3 2 2 1 -60/200 1,15 6 400 both sides smooth 0,5-10 1-10
MVQ transp. BGA execution
odourless; tasteless
suitable for food
ERICA SILICONE 40 40° 3 4 4 4 2 -45/200 1,13 5 450 foll. FDA 177.2600 - 1-10
blue 610 x 610 mm plate
Viton® FDA 65° 1 1 2 2 1 -20/200 2,09 10,3 200 FDA compliant - 1,5 à 3
FPM white white 177.2600
Neo 70 70° 3 4 2 2 2 -30/125 1,4 8,5 450 Lebensmittelecht 1-10 1-10
white

1 = excellent, 2 = very good, 3 = good, 4 = bad

51
HIGH PURITY SEALS

13. Gaskets

13.2. Gylon PTFE gaskets Gylon Off-White Style 3510

Style 3510 GYLON has a very wide
Gylon Standard Style 3500 and chemical resistance (the optimum of all
Style 3501E the GYLON gasketing products). It is
These general purpose gasketing particularly suited for service against
materials offer significant advantages hydrofluoric acid and other strong
over conventional PTFE in regard to chemicals such as potassium and
functionability at higher sodium hydroxide, hydrogen fluoride,
temperature/pressure combinations. aluminium fluoride and chrome plating
Style 3500 and 3501 E GYLON gas- solutions. Conforms to FDA specifica-
keting conform to FDA specifications. tions.

GYLON - technical data

GYLON standard GYLON Blue GYLON Off-White

Style 3501 E Style 3504 Style 3510
Temperature range -210 to +260°C -210 to +260°C -210 to +260°C
Pressure load 83 bar 55 bar 83 bar
P x T, max. thickness : 1 and 1,5 mm 12000 12000 12000
3,0 mm 8600 8600 8600
Compressive creep strength (DIN 52913)
150°C - 30 N/mm2 16 15 14
175°C - 50 N/mm2 25 - -
Modules at 100% Elongation (ASTM D1708) 11 N/mm2 10 N/mm2 9 N/mm2
Compressibility (ASTM F 36) 7-12% 25-45% 4-10%
Recovery (ASTM F 36) 40% 30% 40%
Creep relaxation (ASTM F 38) 18% 40% 11%
Tensile strength (ASTM D 1708) 14 N/mm2 14 N/mm2 14 N/mm2
Sealability (ASTM F 37 B) ASTM Fuel A:
Internal pressure = 0,7 bar, Gasket load = 7 N/mm2 0,1 ml/h 0,12 ml/h 0,04 ml/h
Gas sealability (DIN 3535/6) 0,10 cm3/min 0,15 cm3/min 0,10 cm3/min
Leak rate (DIN 28090-2), λ 2,0 <0,001 mg/(s x m) <0,001 mg/(s x m) <0,001 mg/(s x m)
Density (DIN 28090-2) 2,19 g/cm3 1,70 g/cm3 2,80 g/cm3
Quality FDA FDA FDA

52
HIGH PURITY SEALS

13. Gaskets

13.3. GORE-TEX® gaskets GORE-TEX GR® Style R Sheet

Gasketing
GORE-TEX® sealants are among the GORE-TEX GR® Style R Sheet gasket-
world's tightest, chemically resistant ing is manufactured using Gore’s
gaskets. They have proven value to unique proprietary expanded ePTFE
companies that handle aggressive or process. Its multidirectional strength
toxic materials that must be kept in inhibits creep and cold flow and also
compliance with environmental and limits the possibility of blow out.
safety regulations. Made from 100% GORE-TEX GR® Style R Sheet gasket-
expanded PTFE, GORE-TEX® gaskets ing is a development based on GORE-
are suitable for use throughout the TEX GR® sheet gasketing. It provides a
entire pH range, except molten alkali 6-fold increase in bend resistance
metals and elemental fluorine. They making the gaskets easier to handle.
withstand temperatures from -450°F to
600°F (-268°C to 315°C) which makes GORE-TEX® Gasket Tape GORE-TEX® Triguard
them ideal for high temperature as well A form-in-place ePTFE gasketing mate- GORE-TEX® TriGuard gaskets are
as cryogenic applications. rial available in a variety of profiles to used to seal fragile pipe flanges with
suit virtually any sealing configuration. low bolt load. Unlike other gaskets,
Physiological Safety Ideal for full-face gaskets where precise they seal tight and stay tight, even with
GORE-TEX®‚ gasket tape, GORE-TEX compressed thickness is essential. varying flange conditions.
GR® Style R sheet gasketing and Designed for low stress-to-seal
GORE-TEX® TriGuard may be safely flanges, GORE-TEX® TriGuard gas-
used as articles or components of arti- kets are ideal for contamination ser-
cles used in producing, manufacturing, vices and highly permeable fluids,
packaging, processing, preparing, chlorine and monomer service.
treating, transporting or holding foods. Unaffected by even the most aggres-
Physiologically harmless in prolonged sive chemicals GORE-TEX® TriGuard
installation at temperatures up to gaskets combine all the properties of
+260°C according to VDI/VDE guide- expanded PTFE with very good seala-
line 2480, complies to FDA 21 CFR bility.
177.1550 5PTFE) requirements for food.

GORE-TEX® - technical data

Availability DF Series 300 and 600 GR Style R TriGuard

Tape Tape Sheet and cut gasket
Installation Apply overlap, cut, Cut to shape, insert, Standard DIN and
tighten up tighten up ANSI dimensions
Temperature -240°C to +270°C -240°C to +270°C -240°C to +270°C -240°C to +270°C
range for short periods for short periods for short periods for short periods
up to +315°C up to +315°C up to +315°C up to +315°C
Pressure 210 bar 210 bar 210 bar vacuum to 40 bar (600psi)
Chemical pH 0-14 pH 0-14 pH 0-14 pH 0-14
resistance
Sealing factor
k1(PN40) = 1,6 x bD 2,5 x bD 2,5 x bD
k0xkD(PN40) = 1,95 x bD 25,4 x bD 25,4 x bD
Material Expanded PTFE Multi-directional orientated Multi-directional orientated Multi-directional orientated
characteristics ePTFE ePTFE ePTFE

53
HIGH PURITY SEALS

14. Mechanical seals

Mechanical seals for Food & Water Processing Industries require:

• Compliance to FDA Regulations

• Compliance to the Water Supply Regulations 1989
• Hygienically profiled components in contact with the processed product media
• Component design which minimises the likelihood of food entrapment

WAFQ™ Water & Food Quality Seals

The AESSEAL® range of Water and Food Quality mechanical seals have been spe-
cifically designed to meet the stringent requirements of Food Processing Industries.
All seal designs are available to suit the following shaft sizes (sizes marked with *
are not available in WAFQ-III™ design):

Imperial shaft sizes Metric shaft sizes (mm)

1.000” 1.625” 2.250” 2.875”* 3.500”* 24 33 45 58 70 95*

1.125” 1.750” 2.375” 3.000”* 3.625”* 25 35 48 60 75* 100*
1.250” 1.875” 2.500” 3.125”* 3.750”* 28 38 50 63 80*
1.375” 2.000” 2.625” 3.250”* 3.875”* 30 40 53 65 85*
1.500” 2.125” 2.750” 3.375”* 4.000”* 32 43 55 68 90*

WAFQ-II™

• Single Cartridge Seal

• Springs out of the Product Media
• Balanced Seal Faces
• Easy to install
• Short External Seal Length

54
HIGH PURITY SEALS

14. Mechanical seals

WAFQ-III™

• Flush Connection
• Single Cartridge Seal
• Springs out of the Product Media
• Self Aligning, Balanced Seal Faces
• Short External Seal Length

WAFQ-IV™

• Single Cartridge Seal

• Springs out of the Product Media
• Self Aligning, Balanced Seal Faces
• Quench, Drain & Flush Connections

WAFQ-VI™
(Low pressure barrier
• Double Cartridge Seal fluid opion)
• Springs out of the Product Media
• Self Aligning, Balanced Seal Faces
• Quench & Drain Connections

55
HIGH PURITY SEALS

15. Braided packings

We have a few braided packings which

have been tested by FDA and/or FMPA
(Forschungs- und Materialprüfungs-
anstalt, Stuttgart, Germany).
FMPA specialises on migration test of
braided packings. You can receive a
copy of the conformity test (in
German).

Following braided packings are

conform:

• Trapez pack 1 : FMPA

• Trapez pack 12 : FMPA
• Trapez pack 600 : FMPA + FDA
• Hamar 628 : FMPA
• Hamar 626 : FMPA
• Ramilon : FMPA
• P10-P12-P17 : FMPA
• A19 : FMPA + FDA
• A15 : FMPA
• P600 : FMPA + FDA

56
HIGH PURITY SEALS

15. Braided packings

Carbon Sealing Rings in FDA

BK 230, Standard sizes in mm
We have developed a high performan- Outer Ø Inner Ø Length
ce carbon product under the name 21 6 80
BK 230. 33 10 80
41 17,5 80
BK has certificates: 44,5 11 80
50,8 19 80
DVGW: 50,8 25 80
from technology-center KZW-Karlsruhe 57 12,7 80
LMBG: 57 23,8 80
from Fresenius Institute in Germany 63,5 19 80
(Lebensmittel-und 63,5 31,8 80
Bedarfsgegenständegesetzes 73 38,1 80
FDA: 79,4 47,6 80
Food and Drug Administration 82,5 28,6 80
84 38,1 80
84 44,5 80
85,7 50,8 80
Applications and Physical Properties
101,5 63,5 80
Quality BK 230 108 69,9 80
Impregnation Resin 114 69,9 80
Compr.-strength 283 N/mm2 127 69,9 80
Flex.-strength 86 N/mm2 128 97 80
Density 1,85 g/cm3 139,7 88,9 80
Hardness 80 kp/mm2 139,7 104,8 80
Porosity 0,1 % 158,8 79,4 80
Therm.-Expansion 5,8 x10-6 174,5 101,6 80
Temp.-Limit 280 °C 211 107 80

57
HIGH PURITY SEALS

16. Diaphragm valves

with its high-quality range of SED diaphragm valves, ERIKS can offer solutions for a wide variety of tasks.
FDA approved diaphragms in EPDM, Silicon and PTFE/EPDM, are available for all types and sizes.

Type DN Actuator Plastic Version Actuator with stainless steel adaption

Manually Pneumatically Manually Pneumatically
operated operated operated operated

190 6-12
1/4” - 1/2” X

290 6-12
1/4” - 1/2” X

188 8-15
1/2” - 3/4” X

289 8-15
1/2” - 3/4”
X

195 8-15
1/2” - 3/4” X

295 8-15
1/2” - 3/4” X

385 15-80
1/2” - 3” X

985 15-100
1/2” - 4” X

495 15-100
1/2” - 4” X

995 15-100
1/2” - 4”
X

58
HIGH PURITY SEALS

17. Engineering plastics

New program will be issued

during 2002!

59
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Introduction OKS Speciality Lubricants for the

Food and Pharma-Industry comply
Whether in industry or in handicraft, with the regulations of FDA (Food and
when treating or processing food or Drug Administration) and the hygiene
pharmaceuticals the use of machines requirements of the "Guidelines of
and other technical applications is Security 21 CFR 178.3570". They
gaining more and more importance. It have been tested and approved by the
is only with the support of machines USDA (United States Department of
that these products can today be pro- Agriculture) being previously the
duced profitably in large quantities. worldwide most rigid standard for
However, the quality of the products hygiene concerning the incidental,
must not suffer. The food and pharma- technically inevitable food contact
ceuticals manufacturers as well as (USDA - H 1). This testing and certifi-
manufacturers of machines and equip- cation procedure of the USDA stops in
ments have to trust in the fact that the May 1998 but continues with the same
used lubricants are technically reliable rigid requirements by the NSF
and hygienically perfect. (National Sanitation Foundation).

Since December 1996 the EU regula- Further worldwide accepted institu-

tion 93/43/EWG has to be implement- tions for testing and certifying hygienic
ed in European countries. This lubricants are the LGA
hygiene guideline prescribes that all (Landesgewerbe Anstalt) in
precautions and measures are taken to Nuremberg/Bavaria, a state-owned
ensure harmless and consumption German scientific institute for food-
suitable food- and pharmaceutical stuff research, the TZW
stuffs. This compromises too that the (Technologiezentrum Wasser) in
risk of contamination of the product Karlsruhe/Germany, responsible for
has to be kept as small as possible. KTW approvals or the BPVA
The practical feasibility is based on (Staatliche Brautechnische Prüf- und
HACCP (Hazard Analysis and Critical Versuchsanstalt of the technical
Control Points) including and monitor- University of Munich-Weihenstephan)
ing all critical points of processing to which is a states-owned institute for
ensure limits of contamination and the brewery industry.
product safety.

At points where incidental product

contact with a lubricant is inevitable or
cannot be excluded 100 %, OKS
Speciality Lubricants for the Food
and Pharma-Industry comply with
these regulations.

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HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
OKS Speciality Lubricants for Food and Pharma – Industry

OKS 370 Multipurpose Oil LGA / FDA / NSF-H1*

OKS 371 Multipurpose Oil, Spray LGA / FDA / NSF-H1*

OKS 3720 Gear Oil, ISO VG 220 FDA / USDA-H1 / NSF-H1

OKS 3730 Gear Oil, ISO VG 460 FDA / USDA-H1 / NSF-H1

OKS 3750 Adhesive Lubricant with PTFE FDA / NSF-H1*

OKS 3751 Adhesive Lubricant with PTFE, Spray FDA / NSF-H1*

OKS 3760 Multipurpose Oil FDA / USDA-H1 / NSF-H1

OKS 3770 Hydraulic Oil, ISO VG 46 FDA / USDA-H1 / NSF-H1

OKS 4220 Extreme-Temperature Bearing Grease LGA / FDA / NSF-H1*

OKS 470 White Universal High-Performance LGA

Grease

OKS 471 White Universal High-Performance LGA

Grease, Spray

OKS 474 Fluid Grease FDA

OKS 475 High-Performance Grease LGA

OKS 476 Multipurpose Grease FDA / USDA-H1 / NSF-H1

OKS 477 Valve Grease FDA / BPVA

OKS 478 Adherent Grease FDA / USDA-H1 / NSF-H1

OKS 479 High-Temperature Grease FDA / USDA-H1 / NSF-H1

OKS 1110 Multi-Silicone Grease LGA / FDA / NSF-H1* / KTW / BPVA

FDA = Product formulation according to FDA

LGA = Approved and certificated by the LGA
USDA-H1 = Approved and certificated by the USDA
NSF-H1 = Approved and certificated by the NSF
( * = certification recently applied)
BPVA = Approved and certificated by the BPVA
KTW = Approved and certificated by the TZW

61
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 474 Biodegradable (degradability

above 80% acc. to CEC test).
Fluid Grease For filling and packaging
(also for the machines. Also for chains
food industry) if grease lubrication
is required. DIN 51 502: KEOP-20

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -20°C/+160°C 0 500.000 130 +220°C 1,400/1.8 0 and 0 tins of 1kg
organic +4°F/+320°F +428°F hobbocks of
polymer, ester 5 kg
hobbocks of
25 kg
drums
of 180 kg

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Synthetic grease
OKS 475 especially for high number
High- of revolutions and low
Performance temperatures. In the food
Grease industry particularly for
(also for the filling and packaging
food industry) machines. DIN 51 502: KFHC2-50

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -50°C/+140°C 2 1,000,000 35 +200°C 1,700/1.7 0 and 0 tins of 1kg

PTFE, lithium, -58°F/+285°F +392°F hobbocks of
soap, 5 kg
polyalphaolefin hobbocks of
25 kg
drums
of 180 kg

62
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 476 Universal application.

Resistant to alcaline and acid
Multipurpose disinfection and cleaning
Grease for the agents.
Food Industry
DIN 51 502: KF2K-20

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -20°C/+120°C 2 400.000 67 +250°C 2,200/1.8 0 and 0 cartridges of

aluminium- -4°F/+248°F +482°F 400 g, tins of
complex 1 kg, hobbocks
soap, of 5 kg,
white oil hobbocks of
25 kg, drums
of 180 kg

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Without taste and odour.

OKS 477 Resistant to sterilization.
Froth of beer is not
Valve Grease affected.
for the
Food Industry
DIN 51 502: K3P-10

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -10°C/+160°C 3 not 1,200 none not applicable not applicable tins of 100 kg
inorganic +14°F/+320°F applicable tins of 1 kg
thickener, hobbocks of
polyalphaolefin 5 kg
hobbocks of
25 kg

63
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 478 Strongly adherent and

sealing.
Adherent Long service life.
Grease for the Resistant to alcaline and
Food Industry acid disinfection and
cleaning agents.

DIN 51 502: K2N-20

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -20°C/+150°C 2 500.000 67 +200°C not applicable not tins of 1 kg,
aluminium- -4°F/+302°F +392°F applicable hobbocks
complex of 5 kg,
soap, hobbocks of
white oil 25 kg, drums
of 180 kg

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Long service life even at high

OKS 479 temperatures. Also for mould
High- parts and rubber elastic
Temperature materials exposed to cold
Grease for the and hot water. Resistant to
Food Industry alcaline and acid disinfection
and cleaning agents. DIN 51 502: KPF1P-20

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/ -25°C/+160°C 1 350,000 400 +200°C 2,200/0.7 0 and 0 cartridges of

aluminium- +13°F/+320°F +392°F 400 g, tins of
complex 1 kg, hobbocks
soap, of 25 kg,
polyalphaolefin drums of
180 kg

64
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Sealant and lubricant with

OKS 1110 adhesion on all kind of
Multi-Silicone materials.
Grease, No drying out, hardening recommendation of
physiologically or bleeding in a wide Krones and KHS
harmless temperature range. DIN DVGW Certificate
Resistant to acetone, N°. 5162 BL 0482
ethanol, ethylene, glycol,
glycerin and methanol. KTW recommendation in section
D2 sealings
DIN 51 502: MSI3S-40

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

Transparent/ -40°C/+200°C 3 other not 9,500 none not applicable not tubes of 10 g,
inorganic -40°F/+392°F consis- applicable applicable tubes of 100 g,
thickener tency cartridges of
polydimethyl classes 400 g,
siloxane on tins of 500 g,
request hobbocks of
5 kg and 25 kg,
drums of 180 kg

65
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

High-Performance
OKS 370/371* lubricant with good
Multipurpose penetration power.
Oil for the Colourless, without
Food Industry taste an odour

DIN 51 502: C, CL

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

colourless/ -10°C/+180°C 0.86 14 15 not determined pump spray of 100 ml

additives, +14°F/+356°F canisters of 5 l
white oil canisters of 25 l
drums of 200 l
aerosol of 400 ml*

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Good antiwear properties.

OKS 3720 Long service life by good
Gear oil temperature and oxidation
for the stability. Without taste and
Food Industry odour. Resistant to steam,
alcaline and acid disinfection
and cleaning agents. DIN 51 502: C, CL, CLP

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

light-coloured 0°C/+160°C 0.88 209 220 FZG gear-test rig canisters of 5 l

additives, +32°F/+320°F scuff load > 12 canisters of 25 l
white oil drums of 200 l

66
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

Good antiwear properties.

OKS 3730 Long service life by good
Gear oil temperature and oxidation
for the stability. Without taste and
Food Industry odour. Resistant to steam,
alcaline and acid disinfection
and cleaning agents. DIN 51 502: C, CL, CLP

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

light-coloured 0°C/+160°C 0.88 455 460 FZG gear-test rig canisters of 5 l

additives, +32°F/+320°F scuff load > 12 canisters of 25 l
white oil drums of 200 l

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 3750/ Without colour and taste,

3751* very adhesive lubricating oil
Adhesive with PTFE.
Lubricant High load carrying capacity.
with PTFE Resistant to water and steam
alcaline and acid disinfection
and cleaning agents. DIN 51 502: CF, CLF 100

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

whitish/ -10°C/+180°C 0.87 100 100 2,600/0.7 canisters of 5 l

PTFE +14°F/+356°F (at 300 N) canisters of 25 l
additives, aerosol of 500 ml*
white oil

67
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 3760 Universally applicable by

good long-term lubrification
Multipurpose and strong adhering
Oil for the properties.
Food Industry Without taste and odour.

DIN 51 502: C, CL

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

colourless/ -10°C/+180°C 0.87 100 100 not determined canisters of 5 l

additives +14°F/+356°F canisters of 25 l
white oil drums of 200 l

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 3770 Long service life.

High wear prevention.
Hydraulic Oil Without taste and odour.
for the
Food Industry

DIN 51 502: C, CL, CLP, H, HL, HLP

Colour / Main Temperature Density Viscosity Viscosity Four-Ball Test Rig Packaging
Components Range (g/ml) + 40°C/ Grade welding load (N)/
(°C/°F) +104°F ISO VG wear scar at
(mm2/s) 800 N (mm)

light coloured/ -15°C/+200°C 0.88 46 46 not determined canisters of 5 l

additives +5°F/+392°F canisters of 25 l
mineral oil, drums of 200 l
ester

68
HIGH PURITY SEALS

18. Speciality Lubricants for the Food and Pharma-Industry

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 4220 Long-term grease for very

high temperatures, high loads
Extreme- and aggressive media.
Temperature Only soluble in
Bearing grease perfluorinated
solvents.
DIN 51 502: KFK2U-20

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

white/PTFE, -20°C/+280°C 2 300.000 500 none 9,000/0.6 0 and 0 tins of 500 g

organic +4°F/+536°F cartridges of
polymer, 800 g,
perfluorinated tins of 1 kg,
synthetic oil hobbocks of
5 kg,
hobbocks
of 25 kg

Product Survey
Product Fields of Application Main Advantages Additional Info
Designation and Benefits for correct selection

OKS 470/471* Clean, nonstaining lubrication.

White Universal Safety reserves through white
High- solid lubricants.
Performance For foodstuff, textile, paper
Grease and precision-mechanical
(also for the industry.
Food Industry)
DIN 51 502: KFK2K-30

Colour / Main Temperature Consis- DN Base Oil Drop Four-Ball Test Rig Corrosion Packaging
Components Range tency Factor Viscosity Point welding load (N)/ Protection
(°C/°F) NLGI (d x n) + 40°C/ (°C/°F) wear scar SKF emcor
grade +104°F under 800 N method
(mm2/s) (mm)

light coloured/, -30°C/+120°C 2 300.000 108 +195°C 3,800/0.3 0 and 0 tubes of 10 g

white solid +22°F/+248°F +383°F tubes of 100 g
lubricants, cartridges of 400 g
lithium, tins of 1 kg,
soap, hobbocks of 5 kg,
mineral oil hobbocks of 25 kg,
drums of 180 kg,
aerosol of 300 ml*

69
HIGH PURITY SEALS

19. Rubberqualities - Overview

Elastomers and their various properties

Chemical Natural Styrol- Nitril- Chloroprene Ethylene Fluor Methyl Poly

Nomenclature Rubber Butadien- Rubber Rubber Propylene Rubber Silikon vinylchlorid
Rubber Buna S Buna N (Neoprene®) (Viton)
(Perbunan)

Abbreviation as
per ASTM D 1418 NR SBR NBR CR EPDM FKM MQ/MVQ PVC-soft
Shore A
Hardness Range (±5) 40-90 45-90 45-90 40-90 40-90 65-90 30-80 55-95
Tensile Strength N/mm2 4-15 4-15 4-14 5-15 6-13 8-15 4-12 0
Recoil Elasticity at 20°C ++ + 0 + + 0 0
Abrasion Resistance ++ ++ + + + 0 0 0
A Chemical Resistance + + + + ++ +++ + ++
A Oil Resistance - - ++ + - ++ + +
A Petrol Resistance none - + - - ++ - +
A Solvent Resistance - - + + 0 0 + 0
A Temp Stability in °C -40 to +80 -30 to +80 -30 to +100 -25 to +100 -40 to +100 -20 to +200 -50 to +180 -25 to +60
Ozone Resistance 0 0 0 ++ +++ ++ ++ 0
General Climate
Resistance 0 + + ++ ++ ++ ++ +
Gas Impermeability 0 0 + + 0 + -
B Resistance to per-
manent deformation ++ + + + + + 0 0
Adhesion to metal ++ ++ 0 + 0 0 0
Dielectric Properties ++ + + 0 ++ + + 0

A = In view of the multitude of chemicals, solvents, application temperatures and times the value quoted may vary in some
cases. For example one type of elastomer which normally has only low resistance properties could show very good
resistance to certain media.
B = At relatively high or low temperatures, resistance generally drops.
C = These are borderline values which, depending on the composition of the mixture, can vary.
If used permanently in such borderline areas, this can lead to a change in the physical values. For such extreme applica-
tions it is advisable to use special elastomer mixtures.
++ = excellent to very good
+ = good
0 = satisfactory
- = low to very poor

70
HIGH PURITY SEALS

20. Addendum

Doing business with ERIKS means:

• possibility of ‘customer packaging’

• traceability through each product
• certification of FDA and USP
conformity on request
• special migration test in our lab on
demand, also for special products
• USP certification on request for
some product lines
• FDA label on the packaging on
demand.
• having access to the high perfor-
mance seals rubbers and plastics
• having access to the development
centers of our partners such as:
DuPont-Dow, University Ghent, labo
Richter, Clywd compounders,
Northern Engineering, Rubberfab.
• having access to quality seals rub-
bers and plastics produced with the
highest security for your application

71
HIGH PURITY SEALS

21. Glossary

FDA Regulations for Rubber: Part 177.2600 lists numerous chemi-

cals permitted in the manufacture of
ERIKS offers its customers materials rubber articles intended for repeated
for their products that are used in contact with food. Parts 100 through
numerous food contact applications. 199 of the same FDA Title 21 regulate
We find that often there is confusion these chemicals. Rubber Compounders
over the definition of ‘FDA Approved’. purchases from its suppliers those
We hope this bulletin will clarify that chemicals that are documented, by
definition and what ERIKS offers its those suppliers, to comply with those
customers with regards to materials regulations.
intended to come in contact with food.
We offer three levels of compliance
The United States Food and Drug with the FDA Title 21, Part 177.2600
Administration (FDA) issues guidelines as follows:
for the manufacture of rubber articles
used in the handling of food. These
include the guidelines of what ingredi- 1. Formulated with Ingredients Complying with FDA Title 21, Part 177.2600
ents can be used in the production of Certification that the ingredients and proportions used comply with FDA Title 21,
rubber, in what proportions and what part 177.2600. There is no charge to the customer for this level.
amount can be extracted when tested
in relation to the food for which it is 2. Formulated and Tested to Meet the Requirements of FDA Title 21, part 177.2600
intended. The only FDA Guideline Certification that the ingredients and proportions used comply with FDA Title 21,
Rubber Development attempts to com- Part 177.2600 and test results (ERIKS utilizes an independent laboratory for these
ply with is the FDA Title 21, part tests) that the extractives comply with the same. A quotation is required, but the
177.2600, ‘Rubber Articles Intended for charges usually run in the hundreds of dollars and can take a few weeks to comple-
Repeated Use’. te. (Not required for articles intended for use with dry food.)

3. FDA Approved
This involves formal submission to the United States Government Food and Drug
Administration, costs ca. $6000 and up and can take from 4 to 18 months to receive
approval. A quotation will be supplied upon request.

72
HIGH PURITY SEALS

21. Glossary

ACS: French norm for waterapproval

AOAC:
Products with this symbol meet requirements for a specific method as reported by AOAC
International. AOAC International is a nongovernmental organization that tests and
approves analytical methods according to recognized standards.

ASTM: American Society of Testing and Materials

BGVV: German norm for food contact

CEN: Comité Européen de normalisation

CIP: Cleaning In Place

DIN: Deutsche Industrie Norm

DVGW: Deutsches Verein Gas-Wasser

EHEDG: European Hygienic Equipment Design Group

EN: European norm

Eriflon: PTFE

Eriseal: Energised PTFE seal

FDA: Food Drugs Administration

FEP: Fluorethylene propylene

FFPM: Perfluorelastomer

FPM: Fluorelastomer

FKM: Fluorelastomer

GRAS: Generally Recognised As Safe

GMP: Good Manufacturing Practices

Gylon: Special filled PTFE from Garlock

HACCP:
Products with this symbol meet HACCP requirements for monitoring critical control
points of your process control plan. HACCP stands for Hazard Analysis & Critical Control
Point, a FDA and USDA regulatory plan to promote food safety and quality.

IAFP: International Association for Food Protection

ISO: International Organisation for Standardisation

ISO 9000:
Manufacturers who produce these products meet certain quality standards set by ISO-
9000 quality program
73
HIGH PURITY SEALS

21. Glossary

Kalrez®: Registered name PTFE DuPont-Dow for perfluorelastomers

KTW: German norm for waterapproval

LSR: Liquid Silicone Rubber

MVQ: Silicone

NNI: Nederlands Normalisatie Instituut

NSF:
National Sanitary Foundation. Products with this symbol have been
tested and certified by NSF International. NSF is a nongovernmental
agency that focuses on health-related standards for products and services.

PT cured: Platinum cured

PTFE: Poly Tetra Fluorethylene

SIP: Steam In Place

Teflex®: Encapsulated O-ring

Teflon®: Registered name PTFE DuPont-Dow

Tef-Steel®: Teflon-Stainless Steel

UHMW: Ultra High Molecular Weight

UL:
Products with this symbol are listed by Underwriters Laboratories, Incorporated
(UL). Samples of these products have been evaluated by UL and meet the
applicable UL Standards for Safety.

USDA: US Department of Agriculture

USP: United states pharmacopeia

Viton®: Registered name PTFE DuPont-Dow

VulcOring: O-ring produced out of cord

WRC: English norm for waterapproval

3-A: Symbol that assures that:

- equipment meets sanitary standards
- guidelines are established for compliance by sanitarians

74