EPDM is a copolymer of ethylene and propylene. Ethylenepropylene-diene rubber (EPDM) is produced using a third monomer and is particularly useful when sealing phosphate-ester hydraulic fluids and in brake systems that use fluids having a glycol base.
Both o-rings and gaskets can be made from EPDM materials.
Names: Ethylenepropylene-diene rubber, EPDM, EPR, EPM
|ASTM D1418 Designation||EPDM|
|ASTM D2000/SAE J200 Type, Class||AA, BA, CA, DA|
|Hardness (Shore A)||40-95|
|Standard Min Temp.||-40°F (-40°C)|
|Max Temp.||275°F (135°C)|
|Special Min Temp.||-67°F (-55°C)|
|Special Max Temp.||302°F (150°C)|
Hot water & steam up with special compounds up to 400°F (204°C)
Glycol based brake fluids up to 300°F (149°C) Many organic and inorganic acids
Cleaning agents, soda and potassium alkalis
Phosphate-ester based hydraulic fluids (HFD-R)
Silicone oil and grease
Many polar solvents (alcohols, ketones, esters)
Ozone, aging and weather resistant
Mineral oil products (oils, greases, and fuels)
Disclaimer: These are general guidelines only. All materials should be tested in your application.