Sealing ring for a pipe joint sleeve comprises a shaped outer part of high-performance elastomer and a partially exposed base core of a harder plastic

摘要

A sealing ring fits into a groove in the outer section of a joint that slides over an inner pipe. It has sealing lips (8, 9) formed into an outer part (3) made of high-performance elastomer, which partially encloses a core (2) of a more rigid plastic. A sealing ring fits into a groove in the outer section of a joint that slides over an inner pipe. It has sealing lips (8, 9) formed into an outer part (3) made of high-performance elastomer, which partially encloses a core (2) of a more rigid plastic. The exposed part of the core rest against the groove wall away from the direction of sliding when making the joint and can include an air release groove (6). The sealing lips can have projections (14, 15) to improve the sealing properties. Recesses (10, 11) provide space into which the lips (8, 9) can be compressed when the joint is made.