AEM - Acrylic Ethylene Copolymer

Clwyd reference AEM
ASTM classification AEM

Copolymer of ethyl and butyl acrylate

Typical applications

Automotive sealing applications, including seals for transmission and power steering systems

  • Excellent resistance to petroleum fuel and oil
  • Good heat resistance
  • Good ozone resistance
  • Resists flex cracking
  • Moderate water resistance
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