Method of fabrication of an inflatable vulcanised seal

摘要

An elastomer preform(2) is extruded with an internal chamber(32) and sealing and/or closure components are inserted into the preform ends. The seal preform and end sealing components are then vulcanized together in a single operation. An Independent claim is made for an inflatable seal preform with end sealing and/or closure plugs which are vulcanized with the preform.