ABSTRACT
Acrylic elastomers have been called ACM and "specialty rubbers" by the American Society for Testing and Materials (ASTM) ( 1985). Their unique characteristic, i.e., the absence of unsaturated sites in the polymer backbone, is not present in so-called general purpose rubbers. As a consequence of this aspect, their properties include resistance to high temperature (> 300°F, or 150°C), ozone, oxygen, ultraviolet light, inertness to sulfur-bearing oils and greases, and dimensional stability in aliphatic hydrocarbons. All these properties make acrylic elastomers very useful for service in the applications of the modem automotive, industry in particular in transmission seals, rear axle seals, oil cooler hoses, and generally in under-the-hood applications.
