Lip sealing ring and method for its manufacture

摘要

In a lip sealing ring made of two elastomer materials including, a first elastomeric material made from a non-fluoroelastomer, a second elastomeric material made of a fluoroelastomer and serving as the sealing lip, and an embedded reinforcing metal ring, the improvement wherein the non-fluoroelastomer material is an acrylelastomer consisting of a terpolymer of ethylene, methylacrylate and a carboxyl containing monomer, with the sealing lip portion and the non-fluoroelastomer portion being vulcanized to the metal ring with a binder comprised of a mixture of monomeric silanes.