EPDM Rubber

ASTM D1418 Designation: EPDM
 
ASTM D2000/SAE J200 Type, Class: AA, BA, CA, DA
 
Standard Color: Black
 
Description: A copolymer of ethylene and propylene (EPM), sometimes combined with a third comonomer (EPDM), Ethylene Propylene has gained wide seal industry acceptance for its excellent ozone and chemical resistance characteristics.
 
Key Use(s): Outdoor weather resistant uses. Hydraulic & automotive brake systems. Automobile cooling systems. Water appliances. Low torque drive belts. 
 
Temperature Range: Standard Compound: -60⁰ to +300⁰F. (Dry Heat Only)
 
Hardness (Shore A): 40 to 90

Peroxide Cured EPDM Rubber

Features: With a working temperature range of 60⁰F to +300⁰F, depending upon the compound, EPM/EPDM excels in its resistance to the very same chemical agents that cause rapid and extreme deterioration in Nitriles. 

In particular, EPM/EPDM features good resistance to such polar solvents as ketones (MEK and Acetone). It is also highly recommended for effective resistance to steam (to 400⁰F); hot water; silicone oils and greases; dilute acids and alkalies; alcohols and automotive brake fluids.
 
EPM/EPDM further features excellent resistance to aging by both ozone and sunlight.
 
EPM/EPDM can also be compounded for FDA approved applications.
 
Limitations: With the exception of resistance to polar solvents, EPM/EPDM is not recommended for its overall solvent resistance.
 
And, unlike Nitriles, this elastomer performs poorly when exposed to petroleum oils, diester-based lubricants (MIL-L-7808), or aromatic fuels.