Elastomer/soft material seals

Elastomere

Description


Elastomers are macro-molecular, organic substances with little cross-linked structure. As a result, they do not melt, are insoluble, partly subject to swelling and are elastic. Elastomers are based on rubber which is processed into various kinds of synthetic rubber, depending on the monomer. The various kinds of synchetic rubberdiffer slightlys in their properties so that they are used for different applications with regard to temperature, hardness, elasticity etc..

In addition to generally common mouldings such as Orings, our delivery range also includes customized mouldedarticles, profi le cords, punched or cut seals manufactured to specifi cations or to drawings, plates or rollers.
 
 
Preferred elastomer materials:

AbbreviationUsual trade designationBase material
NBRPerbunan®, Buna N®Nitril-Butadien
EPDMBuna A®, Nordel®Butadien-Natrium
CRNeopren®, Chloropren®Chlor-Butadien
CSMHypalon®chlorsulfoniertes PE
FPMViton®, Fluorel®Fluor
VQMSilopren®Silikon
NRGummi vulkanisierterNaturkautschuk
EPDM Qual. 0424

We alsoe process::

  • Ceramic plates (ISOPLAN®,NEFALIT®)
  • Asbestos-free fibreboard (AFP)
  • Graphite material (GraFlex)
  • Mica material

and fully synthetic plastics, such as:

  • PTFE, filled / unfilled,
  • PTFE TFM®,
  • Polyurethane (PU),
  • Polyethylene (PE)
  • Polyvinyl chloride (PVC).

 
 
Most of the materials listed above are available ex stock from our extensivewarehouse. Materials in various thickness and versions regarding temperature and hardness are always available, so that we are able to deliver at short notice.


physical Data

ElastomerNRNBREPDMVMQ
Shore hardness °A40 - 9040 - 9050 - 80 (88)approx. 60
Temperature range °C-50 to +70-30 to +120-40 to +120-60 to +200
(230)
Resistance to:
Swelling in lubrication oillowvery goodlow/averageaverage
Mineral oil + fuellowexcellentlowaverage
Animal + vegetable fatlow/goodvery goodgoodgood/excellent
Water absorptionvery goodgoodvery good/excel.excellent
Sunlight, weathergoodlowoutstandingexcellent
Water vapour <150 °Cnot suitablenot suitablevery good
Water vapour >150 °Cnot suitablenot suitablegood
Abrasiongoodgoodgoodaverage
Expansion, tensile strengthexcellentgoodgoodgood
Elasticityexcellentaveragegoodgood

ElastomerFKMCRKalrez®Chemraz®
Shore hardness °A~7540 - 90~80~75
Temperature range °C-20 to +200-40 to +80-50 to +315-30 to +230
(230)(100)(350)(260)
Resistance to:
Swelling in lubrication oilexcellentaverageexcellentexcellent
Mineral oil + fuelexcellentgoodexcellentexcellent
Animal + vegetable fatexcellentgoodexcellentexcellent
Water absorptionvery goodgoodvery goodvery good
Sunlight, Weatheroutstandingvery goodoutstandingoutstanding
Water vapour <150 °Cnot suitableconditionallygoodgood
Water vapour >150 °Cnot suitablenot suitablegoodgood
Abrasionaveragevery goodgoodgood
Expansion, tensile strengthveryverageaverage goodveryaverageveryaverage
Elasticityverygoodverygoodverygoodverygood

The data listed above provide initial orientation. Due to the variety of different mixtures, the list only gives approximate values which serve as a rough guide. Please note that the foregoing data cannot form the basis for damages claims.