Trade Names
  • Vistalon — Exxon Mobil
  • Nordel — Dow Chemical
  • Kaltan — Arlanxeo
  • Royalene — Lion Elastomer
ASTM D1418 Designation
EPDM
ASTM D2000/SAE J200 Type, Class
AA, BA, CA, DA
Apple Compound Designation
EP
Standard Color
Black
Description
A copolymer of ethylene and propylene (EPR), combined with a third comonomer diene (EPDM), Ethylene Propylene has gained wide seal industry acceptance for its excellent ozone and chemical resistance characteristics.
Key Uses
Outdoor weather resistant uses, automotive brake systems, automobile cooling systems, low torque drive belts, watertight applications with low water permeability.
Temperature Range
  • Standard Compound: -76°F to +275°F
  • Special Compound: -76°F to 302°F
Hardness (Shore A)
40 to 95
Features
When compounded using peroxide curing agents, high temperature service can reach +350°F. Good resistance to acids and solvents (i.e. MEK and Acetone).
Limitations
Have no resistance to hydrocarbon fluids.