Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1991-08-06
1992-04-14
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 27, 277165, F16J 906
Patent
active
051041316
ABSTRACT:
In the case of conventional seal arrangements comprising a sealing ring (5) consisting of a tough-elastic plastic material and a rubber-elastic stressing ring (6), where one edge (53) of the sealing ring (5) is in contact with the circumference of a rod (1), the pressing force encountered at the edge is dependent, to a very high degree, on the fluid pressure because the fluid pressure acts upon the circumferential surface of the sealing ring (5) either directly or via the rubber-elastic stressing ring (6). The pressing force, which consequently rises considerably in the presence of high fluid pressure, leads to high frictional forces at the sealing edge (53), which increase even further in the course of operating time. The invention makes the system independent of the operating pressure by the fact that the stressing ring (6) is arranged at the high-pressure end of the sealing ring (5) and that the size of the surface, upon which the fluid pressure acts from the outside, can be exactly determined by the particular configuration of the contact surface for the stressing ring.
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Edlund Roy
Muller Heinz K.
Busak & Luyken GmbH & Co.
Cuchlinski Jr. William A.
DePumpo Daniel G.
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