Title: Two part sleeve gasket

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Abstract: A two part sleeve gasket is provided for sealing between a pipe and a hole receiving the pipe, such as a porthole in a manhole. The gasket includes a first annular element of resilient elastomeric material having a generally tubular body portion and an outwardly, reflexly curved flange radially spaced therefrom. The flange is generally tubular and shorter in length than the body portion. A second annular element resembling an O-ring of elastomeric material surrounds the body portion in the radial space defined by the flange, the flange being radially flexible into engagement with the wall of the hole and the second annular element being elastically deformable upon being radially compressed between the flange and the body portion. The invention also comprehends the method of installing the aforesaid gasket. The method includes the steps of telescoping the tubular body portion over the pipe, inserting the pipe with the tubular element thereon into the opening with the flange loosely engaging the wall of the hole, and forcing the second annular element of resilient elastomeric material which surrounds the pipe into the radial space between the flange and the body portion, the second annular element being of a cross sectional size greater than the free radial space between the flange and the body portion when both are engaged with the wall of the hole and the pipe, respectively, whereby the flange and the body portion are forcefully expanded into sealing engagement with said wall and pipe.


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