POLYACRYLATE (ACM) RUBBER
ACM or simply acrylate rubber consists of a polymerized ester and a curing monomer. Ethyl acrylate rubber has a good resistance to heat and mineral oil; on the other hand butyl acrylate has a better cold flexibility. Polyacrylate has a good resistance to mineral oil, oxygen and ozone even at high temperatures. The water compatibility and cold flexibility of ACM are significantly worse than with NBR.
Both o-rings and gaskets can be made from Polyacrylate materials.
Names: Polyacrylate, ACM, Acrylate
|ASTM D1418 Designation
|ASTM D2000/SAE J200 Type, Class
|Hardness (Shore A)
|Standard Min Temp.
Mineral oil (engine, gear box, ATF oil)
Ozone, aging, and weather resistance
Glycol based brake fluid
Aromatics and chlorinated hydrocarbons
Hot water, steam
Acids, alkalis, amines
Disclaimer: These are general guidelines only. All materials should be tested in your application.