Seal ring

Details Seal ring Seal ring

1993-07-29

1994-04-19

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277168, 277220, 277227, 277DIG6, F16J 1532

Patent

active

053039360

ABSTRACT:
A seal ring for sealing a space formed between a cylinder and a movable member inserted into the cylinder is essentially composed of a seal ring body which is fitted into a groove formed in the inner periphery of the cylinder. The seal ring body is formed of a resin material such as fluoride resin and a filler mixed with the resin material so that the seal ring body has a thermal expansion coefficient substantially equal to that of the cylinder. The filler is also mixed with the resin material so that the filler is oriented in a circumferential direction of the seal ring body. It is preferred to use a filler made of carbon fiber having an aspect ratio of about 5 to 400.

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patent: 4941669 (1990-07-01), Fujisawa et al.
patent: 4986511 (1991-01-01), Irby et al.
patent: 5028056 (1991-07-01), Bemis et al.

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