Polyacrylate (ACM, PA) or simply acrylate rubbers are copolymers that have two major components, momoneric acid ester of alkyl or alkoxy and a reactive curesite. ACMs have better resistance to high heat and oils than NBRs. it also has good resistance to oxygen and ozone at high temperatures. It has relatively poor resistance to water and low temperature flexibility compared to NBRs. Special ACM compounds and improve the low temperature flexibility to -40°C (TR10 value) without affecting its oil and heat resistance.

Cure system – Amine based and metal soaps cured

Standard ACMs are amine based and metal soaps combined to vulcanize.

Other Common Variations

  • Polyacrylates are usually applied in automatic industry, often in automatic and transmission and steering fluids.

General information

ASTM D 1418 Designation: ACM
ISO/DIN 1629 Designation: ACM
ASTM D2000 / SAE J 200 Codes: DF, DH, EH
Standard Color(s): Black
Hardness Range: 45 to 80 Shore A
Relative Cost: Medium-High

Service Temperatures

Standard Low Temperature: -15°C / 5°F
Standard High Temperature: 150°C / 302°F
Special Compound Low Temperature: -40C / -40°F
Special Compound High Temperature: 175°C / 347°F

Performs well inDoes not perform well in
Mineral oils (transmission and steering fluids)Alcohol
Ozone, weather and hot airAromatics
Hot water and steam
Acids, alkalis and amines
Brake fluids