Composite seal
Apple Rubber

Custom-engineered composite seals incorporate the seal and another component in one part to help ease installation and reduce assembly costs. They include complicated parts such as rubber bonded to metal, plastic or filter materials. They simplify your design with one part instead of two or more, provide tighter tolerances and eliminate the seal to component installation process.

By molding the rubber seal directly to the mating metal or plastic components, a number of benefits are realized including:

Simplification of design -- one part instead of two or more
Tighter tolerances -- avoidance of tolerance stack-up
Elimination of seal to component installation process -- a source of defects and high costs