Acrylic rubber, known by the chemical name alkyl acrylate copolymer (ACM) or the tradename HyTemp, is a type of rubber that has outstanding resistance to hot oil and oxidation. It belongs to specialty rubbers. It has a continuous working temperature of 150C and an intermittent limit of 180C. ACM is polar and lacks unsaturation. It is resistant to ozone and has low permeability to gases.[1] Its disadvantage is its low resistance to moisture, acids, and bases. It should not be used in temperatures below -10C.
It is commonly used in automotive transmissions and hoses.[2] It is also used in shaft seals, adhesives, beltings, gaskets and O-rings.[3] [4] It is used in vibration damping mounts due to the damping properties.[1]