Combination lip and sleeve seal and its method of manufacture

Details Combination lip and sleeve seal and its method of manufacture Combination lip and sleeve seal and its method of manufacture

1995-07-17

1996-11-26

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277152, F16J 906

Patent

active

055777414

ABSTRACT:
A combined lip and sleeve seal for use with a generally cylindrical surface relatively rotating shaft is formed by a molding operation and includes a sleeve seal portion for contacting and forming a first oil seal with the shaft and an integrally joined radial lip seal spaced axially from the sleeve seal for contacting and forming a second oil seal with the shaft. The seal may also include an integrally formed dust seal lip at a location spaced axially from the radial lip seal on the side thereof opposite the sleeve seal. The radial lip seal and sleeve seal may include a liner formed from a low friction synthetic resin material such as a sintered polytetrafluoroethylene. The sleeve seal is formed as an initially generally radially inwardly extending annular flange having an inner diameter less than the outer diameter of the cylindrical surface of the relatively rotating shaft and is deflected axially and expanded radially to provide a substantially cylindrical sealing surface contacting the shaft surface when installed on the shaft.

REFERENCES:
patent: 2837359 (1958-06-01), Corsi
patent: 3010748 (1961-11-01), Haynie
patent: 4171561 (1979-10-01), Bainard et al.
patent: 4822058 (1989-04-01), Butler et al.
patent: 5462287 (1995-10-01), Hering et al.

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