SEALING GASKET WITH SPECIALIZED REINFORCING RING FOR SEALING PLASTIC PIPELINES

摘要

A pipe sealing gasket is shown which is designed to be received within a raceway provided within a socket end of a female bell plastic pipe end which Is assembled with a mating male pipe end to form a plastic pipe joint. The raceway in the female bail plastic pipe end is preformed during manufacture and the gasket is installed thereafter. The gasket has a rubber body portion which is reinforced by a hard plastic band formed as a series of integral, spaced wedges which are Interconnected by a flexible ribbon. The gasket is flexible enough to be flexed and placed in the pipe raceway and yet the hard plastic band acts to prevent extrusion of the gasket during a variety of pressure conditions as welt as preventing displacement during field assembly.