Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1988-10-28
1989-07-04
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 26, 277237R, F16J 1532, F16J 1554
Patent
active
048444855
ABSTRACT:
An annular seal assembly for sealing an enclosed rotatable shaft. An annular sealing element is frictionally retained between portions of inner and outer metallic cases. The sealing element includes a sealing annulus and a reinforcing annulus which are disposed in laminar fashion and retained between the outer and inner cases. The sealing annulus is deflected by and sealingly engages the outer surface of the shaft when inserted therein. The reinforcing annulus is formed of silicone and is disposed adjacent to the sealing annulus so as to urge the sealing annulus into sealing engagement with the enclosed shaft, particularly when the sealing annulus is cold or when the shaft is highly eccentric. The reinforcing annulus is responsive to an increase in temperature or to an absorption of liquid for increasing in size, thereby reducing the amount of compressive force exerted thereby against the deflected portion of the sealing annulus.
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Antonini Joseph
Walinski Edward L.
Dana Corporation
Ward Robert S.
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