The composite material for a metal gasket includes a metal plate; a rubber layer fixed on the surface of the metal plate; and a solid lubricant layer fixed on the rubber layer. The solid lubricant layer contains polytetrafluoroethylene and a resin as main components, and has a friction coefficient equal...http://www.google.com.au/patents/US6607830?utm_source=gb-gplus-sharePatent US6607830 - Composite material for metal gasket
