profiles, cords and hoses for special applications

Product informationSpecial Sealing Products

Profiles, cords and hosesfor special applications

Vibration Control

Special Sealing Products: Bellows, Diaphragms,Elastomer Composite Parts and Precision Mouldings

Lederer Liquid Silicone Products

ISC O-Ring

Integral Accumulator

Merkel Hydraulics / Pneumatics

Simmerring®

Simrit offers a complete package of

products and services, including leading

brands such as Simmerring®, Merkel,

Integral Accumulator, Lederer and

ISC O-Ring.

This way we secure competitiveadvantages for you based onexperience all around the world:Simrit has a presence through-out Europe, America and Asia,either directly or through its affiliated companies NOK (Japan) or Freudenberg-NOK(USA). The transfer of know-ledge between these markets isincorporated directly into theSimrit service package.

With our many Simrit ServiceCentres and Simrit distributionPartners, we serve and supplymore than 100,000 customersworldwide. Our Simrit Partnersensure rapid availability fromstock. This means spare partsquickly arrive when and wherethey are needed. There is aSimrit Partner near you as well.

Simrit, Your GlobalTechnology Specialistfor Seals and VibrationControl offers you acomplete service pack-age. A unique rangeof products and servicesguarantees you numer-ous advantages over thecompetition.

Simrit acts as a partner togeneral industry. Its position asa market leader is achievedthrough continuous research,development and manufacture.We have the world’s widest ran-ge of seals and vibration con-trol products, and can offer yousolutions based on the demandsof state-of-the-art-technology, solutions which set standards.

Make the most of Simrit’s servicepackage and give yourself areal competitive edge:

Constant innovations

Uniquely wide range of products

Strong product brands

Unique materials expertise

A wide range of value added services

Global cooperation andpartnership

Simrit®, Your Global Technology Specialist for Seals and Vibration Control

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Sealing profiles from Simrit® – optimum functionality thanks to individual solutions

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Sealing profiles fromSimrit perform key functions in numerousmarkets:■ Heavy plant e. g. tunnel

drilling machine technology,cement/rock grinding mills

■ Plant engineering e. g. turbines, shut-off valves, process cylinders

■ Power engines e. g. marineengines

■ Separators e. g. filter techno-logy, large separators

■ Mechanical engineering e. g.industrial washing machines,rotating assembly

■ Chemistry e. g. vessels/micro test tubes, dosingpumps

■ Medical engineering e. g.components for diagnostic equipment, dosing pumps

■ Food processing industry, e. g. separators, meat machines

Speak to us. Together we will find the best solution.

Whether tunnelling machines,marine engines or loadinghatches, sealing profiles areused whenever there are largesealing areas which cannotusually be sealed using standard form seals or O-Rings,or without incurring high costs.

With its tried and tested variedrange of over 3,500 standardsealing profiles Simrit has offered successful solutions to all kinds of applications formany years.

In addition, you can also orderspecial profiles from our productdevelopment department indivi-dually tailored to your require-ments – optimum results are guaranteed here thanks to ouryears of experience with the development and processing ofmaterials.

In addition, continuous qualitycontrol during the productionprocess is assured by our in-house tool construction and owntest laboratory. This is also underlined by certification of our quality management systemaccording to ISO/TS 16949.

Wind turbine

Cement works

Tunnel drilling machine

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Profiles, cords and hoses – used everywhere

Overview of benefits to you:■ Sealing of large areas which

cannot normally be sealed by O-Rings or standard formseals

■ Parts are available in lowquantities

■ Products developed entirelyaccording to customer requirements

■ Significant reductions in toolcosts when compared to formspecific parts

■ In-house tool construction toensure short delivery times

■ High level of expertise in thedevelopment of new specialmaterials

■ All standard elastomers canbe used

■ Own production of materials

Materials expertiseAs a materials specialist Simritis able to offer over 2500 different elastomer materialsfrom its own recipes for each application. In addition, newmaterials are constantly beingdeveloped at our laboratoriesto deal with the latest challen-ges. The varied range of materials is coordinated to operating parameters, mediaand wear.

Raw materials used for the production of materials

Production of materials – rollingstation

Control and documentation of the tensile strength

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Profiles – designs

If you require an individual design, we will develop andmanufacture a special tool foryou. This will normally take nomore than four weeks.

Extruded cords■ With/without self-bend

Profiled parts■ Converted according to

customer requirements■ Up to 2000 mm possible

without self-bend

Profile rings■ Bonded at the joint or

joint-vulcanized

Profile 1101 Profile 1123 Profile 1182 Profile 1222 Profile 1235 Profile 1347




On the following pages youcan find a small selection of the approx. 3,500 standardprofiles that we hold in stock.

Speak to us – we cansupply the profile you require.

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U-rings and mating rings

U-rings are manufactured as piston or rod seals, extrudedand bonded at the joint. Theyare available at extremely shortnotice.

Our delivery programme alsoincludes numerous U-rings whose dimensions are not listed in the table.

Fitting of U-rings The inside diameter of the U-rings should be at least 15 times that of the profile cross section size (T).

Mating rings for U-ringsMating rings are used to fix U-rings in place and prevent axial movement of the U-rings,which can damage the sealingedges on the sealing lips. Production is carried out usingextruders. Mating rings are always supplied by the metre.

Fitting of mating ringsDuring fitting the two ends arebutted up against each other.The mating rings can be positio-ned on the U-rings with slight axial tension.

Our delivery programme alsoincludes additional dimensionsnot listed in the table.

Schematic cross section of a U-ring

T b b1 Order No.4 8 5.0 DÜ 1156 6 3.0 DÜ 2066 8 5.0 DÜ 859

10 10 4.0 DÜ 17512 12 6.0 DÜ 61915 15 7.5 DÜ 15515 18 9.0 DÜ 104520 20 10.0 DÜ 14125 25 12.5 DÜ 11130 30 15.0 DÜ 241

U-ring Mating ring

T b b1 t b2 b3 R Order No. B10 10 4.0 6.5 20 10 1.5 DÜ 287 25.015 15 7.5 11.0 32 18 3.0 DÜ 188 39.520 20 10.0 14.0 30 15 4.0 DÜ 160 40.0

b2

b3

b1

bB

t

T

R

Schematic cross section of a mating ring

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Extruded cords■ Available in a cord diameter

from 1 mm to 20 mm*

Cord by the metre is held instock as standard warehousegoods in diameters 1mm to12 mm in 70 NBR 872.

Cord sections■ Converted from cord metre

product■ Cross section diameter from

1 mm to 20 mm*■ Possible in a length of up to

2000 mm without self-bend

Cord rings■ Converted from cord metre

product■ Available in a cord diameter

from 1 mm to 20 mm*■ Bonded at the joint or joint-

vulcanized

Cord rings are extruded cordswhich are cut to the appro-priate diameter and bonded.

Cord rings are used in place of profile rings or O-Rings for simple sealing functions. How-ever, cord rings which have been extruded and bonded atthe joint should only be used for static sealing applications.

Cords and cord rings

The tolerance zone lies in thenegative range as a certain degree of expansion is possibleat any time with large diameterrings during fitting without causing any significant cross section tapering.

*> 20 mm possible in exceptional cases

Schematic cross section of a cord ring

d1 d2

over up to Tolerance over up to Tolerance80 120 – 1.0 3 +/– 0.3

120 180 – 1.4 3 6 +/– 0.4180 250 – 2.0 6 10 +/– 0.5250 315 – 2.8 10 18 +/– 0.6315 400 – 3.5 18 30 +/– 0.8400 500 – 4.5500 600 – 6.0600 –1% of d1

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Hoses, precision hoses and hose rings

Hoses are made from all standard elastomer materialswhich are used to manufacturespecial sealing products at Simrit.

Precision hoses are “mandrel-vulcanised” and can thus beproduced in finely tuned tole-rances for specific individualcases. Tolerances are ensuredthrough grinding the outer diameters.

Hose rings are rings cut from ahose whose outer diameter isground. Precision hose ringsmaintain sharp edges both onthe inside and outside. The inside diameter is smooth and absolutely cylindrical. If required, chamfering and/orcolour-coding are also possible.

The special production processresults in an extremely goodcompression set.

Extruded hoses■ Hose inside diameter of up

to 20 mm possible

Hose sections■ Length of up to 2000 mm

possible without self-bend

Hose rings ■ Cutted from hose■ Formed from extruded or

precision hose

Driving belts, pressurerings, cleaning roller covers■ Hose inside diameter of up

to 200 mm possible

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Hat seals

Hat seals are used to seal rodswith axial movement. They arebonded at the joint in extrudedform.

Hat seals are all equipped withtension springs. We recommenda metal Back-Up ring which isnot a part of Simrit delivery program.

Our hat seals are available at short notice.

Schematic cross section of a hat seal Back-Up ring

Operating pressure: ≤10 barSliding speed: < 0.5 m/s

Hat seal Back-Up ringdN

from up to b t t1 b1 b2 Order No. c Z1 Z2 Z3 B350 500 12 17.5 3.0 4.0 2.5 DÜ 161 A 5.5 0.50 1.05 2.45350 800 15 16.0 3.5 5.0 3.0 DÜ 200 A 7.5 0.75 1.30 3.30380 800 15 20.0 3.5 5.0 3.0 DÜ 162 A 7.5 0.75 1.30 3.30450 1200 18 22.5 4.0 5.5 3.5 DÜ 163 A 8.5 0.75 1.30 3.60500 20 25.0 5.0 6.0 4.0 DÜ 164 A 11.0 0.75 1.15 4.10

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Materials, tolerances

In addition to the standard parts held in stock, we also offer numerous parts in specialmaterials, which offer outstan-

ding quality and material pro-perties. Here you can select suitable materials according toyour requirements.

Materials recommended FPM HNBR CR

FVMQ NBR EPDM SBR VMQ

Outside/ozone yes no yes no yes no yes

Water/glycols yes no yes no

Greases/oils yes no

Requirement for resistance to:

TolerancesAll profiles, cords and hosesare manufactured to DIN ISO3302-1 E2 as standard. In special cases manufacture to E1 is possible.

Our range includes numeroushigh-quality compounds of materials. We would be deligh-ted to develop compounds foryou that cater for your specificrequirements.

Please get in touch with us and take advantage of our materials expertise!

Tolerances

Materials

Nominal dimension Tolerance Toleranceclass class

over up to E1* E20.0 1.5 0.15 0.251.5 2.5 0.20 0.352.5 4.0 0.25 0.404.0 6.3 0.35 0.506.3 10.0 0.40 0.70

10.0 16.0 0.50 0.8016.0 25.0 0.70 1.0025.0 40.0 0.80 1.3040.0 63.0 1.00 1.6063.0 100.0 1.30 2.00

*possible in individual cases

Material Shore A Temperatureresistance

NBR 50 up to 90 – 30 up to + 90 °CCR 40 up to 70 – 30 up to +110 °CEPDM 60 up to 70 – 30 up to +120 °CFKM 70 up to 75 – 30 up to +175 °CFVMQ 60 –30 up to +175 °CVMQ 50 up to 80 – 30 up to +180 °C

Product informationSpecial Sealing Products

30 G

B 05

6 3.

0 08

05 B

r. A

BT

Simrit®, Your Global Technology Specialist for Seals and Vibration Control

Customer-specific development

Low tool costs

Special materials

e. g.

Your Benefits

Simrit Services Your Benefits

Profiles, cords and hoses for special applications

Unique materials expertise

Phone +49 (0) 18 05 - S im r i tPhone +49 (0) 18 05 - 74 6748Fax +49 (0) 18 03 - 74 6748e-mail: [email protected]

Specialised technological expertise

All from one source

Technological edgeConstant innovations

Uniquely wide range of products

Strong product brands

Longer unit service life

Competitive advantages, efficiency and lower costsA wide range of value added services

Locational advantage and knowledge transferGlobal cooperation and partnership

Headquarters Europe:Freudenberg Simrit GmbH & Co. KG69465 Weinheim, Germany

profiles, cords and hoses for special applications

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