| 摘要 |
An elastomeric gasket for use with pipe coupled in end-to-end relationship wherein the coupling employs a split collar received within grooves within the pipe's circumference, the gasket being of a transverse cross section including deflectable lateral leg portions and a deformable central region. The leg portions include sealing surfaces engaging the pipe circumference, and the gasket configuration produces annular cavities between the central region and the leg portions in the normal relaxed gasket condition to permit the desired gasket deformation when compressed. The configuration and relationships of opposed adjacent surfaces of the leg portions and central region are such that when the gasket is under compression the cavities existing in the gasket when in the relaxed condition are totally eliminated by engaging gasket surfaces, and no voids exist in which foreign matter, water or fluids may be trapped.
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