Importance

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Abstract

A flexible gasket for sealing a concrete pipe within a hole formed in a concrete wall. The gasket contains a body ring having sufficient mass to support the gasket within the hole without sagging and a resiliency to allow the gasket to be collapsed inwardly upon itself whereby the gasket is passed easily into and out of the hole. The gasket further contains a finned section mounted inside the ring having circular fins that are disposed inwardly toward the center of the gasket. A series of fins increase in length from the front end of the gasket toward the back end thereof and are adapted to contact the outer surface of a pipe inserted into the gasket opening to compress the gasket in stages against the inside surface of the hole.

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First Claim