Specifying Plastics and Rubbers

Specifying rubber parts by generic product description invariably results in material of unknown pedigree that may fail prematurely. 

The automotive and aerospace industries employ rigid classification systems to describe all the ingredients in the product and key performance requirements. They are defined in ASTM D2000 for rubbers and D4000 for plastics. 

Ethylene propylene diene EP 177°C Lining, hose, gaskets, parts, o-rings 

Fluoroelastomer FFKM 300°C O-rings, gaskets, seals parts 

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