Ethylene Acrylic Rubber
Description
Ethylene Acrylic, or AEM, rubber is generally used in applications requiring a tough rubber that combines good oil resistance, with heat resistance greater than nitrile or chloroprene at a cost well below that of silicone or fluorocarbon rubbers. Good low temperature properties are imparted by the ethylene content, while the acrylate provides a considerable degree of oil resistance. Ethylene Acrylic rubber is highly saturated, and as a result exhibits excellent resistance to ozone and weathering. Ethylene Acrylic compounds are well suited for applications requiring continuous exposure to hot (170°C) aliphatic hydrocarbons, including most common automotive lubricants and hydraulic fluids. Water and ethylene glycol resistance is good, but softening can occur after long term exposure above 100°C. AEM's good dampening characteristics make it well suited for vibration mounts, pads, and isolators.
Composition
Ethylene Acrylic Rubber
Physical Properties*
| Excellent | Good | Fair | Poor | |
| Abrasion resistance | • | |||
| Compression Set | • | |||
| Elongation | • | |||
| Flame resistance | • | |||
| Gas permeability | • | |||
| Low temperature flexibility | • | |||
| Tear resistance | • | |||
| Tensile strength | • |
Chemical Resistance*
| Excellent | Good | Fair | Poor | |
| Automatic transmission fluid | • | |||
| Dilute acids | • | |||
| Dilute alkalis | • | |||
| Ozone | • | |||
| Petroleum oils and fuels | • | |||
| Steam | • | |||
| Water | • | |||
| Weather | • |
Operating Temperature
-30 to 350 °F
*Excellent, good, fair and poor are intended to serve as general guidelines only. Actual testing in the application environment is always recommended.