AEM - Acrylic Ethylene Copolymer
| Clwyd reference | AEM |
| ASTM classification | AEM |
AEM elastomers are primarily used where combined resistance to ozone, heat and oils is required. They are sometimes a good alternative to more expensive heat resistant elastomers such as fluorocarbon polymers (FKM), silicones (VMQ) and fluorosilicones (FVMQ) for elevated temperature applications (< 150 °C). However, AEMs are not recommended for exposure to aromatic hydrocarbons, gasoline, brake fluids and phosphate esters. | |
| Typical applications | Typical applications include automotive transmission / power steering seals and O-rings that have to be resistant to transmission fluids and many other common automotive lubricants and hydraulic fluids. Other applications include diaphragms, plumbing seals, boots, hoses, vibration mounts, pads, isolators and custom molded rubber goods and parts. The typical continuous operating temperature range is -30°C to 150°C (up to 175°C for limited periods of time). |
| Advantages |
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| Disadvantages |
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| Available hardness range (Shore A) | 45 - 90 |
| Upper continuous service temp. | 175°C |
| Min. temp. for sealing applications | -40°C |
| Minimum non-brittle temp. | -60°C |
| Tensile strength (up to) | 20 MPa |
| Elongation at break (up to) | 350% |
| Price Bracket | Low |
| ASTM 1 Oil | Excellent |
| ASTM 2 Oil | Excellent |
| ASTM 3 Oil | Excellent |
| Kerosene | Excellent |
| Liquid B | None |
| Liquid 101 | None |
| Phosphate ester | None |
| Ketone | None |
| Toluene | None |
| Iso-octane | None |
| Methanol | None |
| Acid (weak) | Good |
| Acid (strong) | None |
| Base (weak) | None |
| Base (strong) | None |
| Hydrogen sulphide | None |
| Steam | None |
| Ozone | Excellent |
| Radiation | Good |