Acrylic Rubber (AEM)

Ethylene/Acrylic elastomer(AEM,VAMAC)

ethylene/acrylic elastomer is a copolymer of ethylene and methyl acrylate plus a small amount of a curesite monomer containing carboxylic plus a small amount of a curesite monomer containing carboxylic acid groups.AEM is a tough,low-compression-set rubber with excellent resisrrance to high temperatures,hot mineral oil,fluids and weathering.The low temperature flexibility and mechanic properties are better than ACM,but it is not well resistant to low aniline oil(like ASTM NO.3 oil)and polar solvents.AEM is typically chosen for applications requiring improved performance versus Nitrile rubber,Neoprene or reduced cost versus higher-end elastomers such as HNBR,FKM.It also usually is applied in automatic industry.

Cure system-Sulfur-Cured

Standard AEM compounds are Amine based vulcanization system

Other Common Variations

●AEM has good flexibility and good tear resistance,abrasion and compression set,and it usually is used in shaft lip seals especially in automatic transmission fluids.

●Special VAMAC compounds can improve oil resistance but will sacrifice some low temperature properties

Performs Well In…

●Ozone,weather and hot air

●Automatic transmission fluids(ATF)and Power steering fluids

●Water

Doesnt Perform Well In…

●Ketones

●Fueis

●Brake fluids

General Information

ASTM D1418 Designation

AEM

ISO/DIN1629 Designation

AEM

ASTM D200/SAE J 200 Codes

EE

Standard Color(S)

Blue

Hardness Range

45 to 85 Shore A

Relative Cost

High

Service Temperatures

Standard Low Temperature

—30℃
—22℉

Standard high Temperature

150℃
300℉

Special Compound Low Temperature

—40℃
—40℉

Special Compound High Temperature

175℃
345℉