Ethylene Propylene Rubber (EPDM)

- Sep 01, 2017-

General Information
ASTM D2000                       AA, BA

SAE J 200 Codes              CA, DA
Relative Cost                       Low

-55°~125°C     Special Compound     -55°~150°C
-67°~257°F     Special Compound     -67°~302°F

Primary Uses

  • Water system seals, faucets, etc.

  • Brake systems

  • Ozone exposure applications

  • Automotive cooling systems

  • General industrial use

Performs Well in…

  • Ozone, aging, and weathering

  • Phosphate ester based hydraulic fluids - Skydrol®

  • Glycol based automotive brake fluid

  • Water

  • Steam to 204°C (400°F)

  • Polar solvents (alcohols, ketones, esters)

  • Cleaning agents, soda and potassium alkalis

Doesn’t Perform Well in…

  • Aliphatic and aromatic hydrocarbons

  • Di-ester based lubricants

  • Halogenated solvents

  • Petroleum based oils and greases

EPDM is a copolymer of ethylene and propylene, combined with a third comonomer adiene. EPDM has gained wide seal industry acceptance for its excellent ozone, weathering, and chemical resistance characteristics. It is recommended for outdoor weather resistant uses. It is particularly useful when sealing phosphate-ester hydraulic fluids and in automotive brake systems that use fluids having a glycol base.

Application Advantages

  • Excellent weather resistance

  • Good low temperature flexibility

  • Excellent chemical resistance

  • Good heat resistance


  • Poor petroleum oil and solvent resistance

Specialized Applications

  • FDA approved applications

  • NBR NSF standard 61 for potable water applications

  • NBR WRC, KTW water applications

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