... rubber (ethylene propylene diene monomer (M-class) rubber),a type of synthetic rubber, is an elastomer which is ... and propylene whereas EPDM rubber is a terpolymer of ethylene, propylene and a diene-component).The main properties of EPDM are ... electrical insulating properties.Mechanical properties of EPDM PropertyValueHardness, Shore A 40–90Tensile failure stress, ultimate 25 MPaDensityCan be ...