Seal for aggressive environments

Details Seal for aggressive environments Seal for aggressive environments

1983-12-27

1985-06-25

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277230, F16J 920, F16J 1522

Patent

active

045249822

ABSTRACT:
A seal able to withstand high temperature, high pressure, corrosive environments including a ring-shaped core comprising an elastomer-impregnated asbestos yarn winding, and an elastomer-impregnated asbestos yarn helical winding surrounding and extending along the entire length of the core. The elastomer is a tetrafluorethylene-propylene copolymer or terpolymer, an ethylene-propylene copolymer or terpolymer, or a hydrogenated butadiene-acrylonitrile copolymer. There may be a plurality of helical windings around the core, one overlying another, and each turn of each winding may be parallel to, or at an acute angle to, a diameter of the core which passes through that turn. The cross-sectional shape of the seal may be circular, V-shaped, or any other advantageous seal shape.

REFERENCES:
patent: 3108 (1868-09-01), Bates
patent: 3341211 (1967-09-01), Houghton et al.
patent: 4214761 (1980-07-01), Pippert
patent: 4371180 (1983-02-01), Case et al.

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