Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-11-12
1995-04-25
DePumpo, Daniel G.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 962, F16J 1540
Patent
active
054092400
ABSTRACT:
A seal between a housing and a rotatable shaft is provided, comprising a first ring member generally concentric with a rotatable shaft, the first ring member being attachable to the shaft in a non-rotatable position relative to the shaft, the first ring member further having an annular self-lubricating sealing surface facing away from the first ring member; and wherein the sealing surface is adapted to face a fixed annular surface and to slidably and sealingly engage the fixed annular surface when the first ring member is biased toward the fixed surface. The self-lubricating surface may be provided on a sealing ring which is biased against the fixed surface. The self-lubricating surface, sealing ring and/or first ring member may be constructed of a fluoroplastic material such as glass filled polytetrafluoroethylene. The fixed surface may be provided on a second ring member, enabling the seal to function as a cartridge unit.
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Modern Plastics Encyclopedia, 1988-McGraw-Hill, R. E. Fibeat Fluorocarbon Series 409097/22.
DePumpo Daniel G.
Kiesel William David
Tucker Robert C.
Unilab Bearing Protection Company, Inc.
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