Rod or piston seal with grooved surface

Details Rod or piston seal with grooved surface Rod or piston seal with grooved surface

1994-09-19

1996-04-16

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277215, 277205, F16J 1532

Patent

active

055075053

ABSTRACT:
A rod or piston seal with a seal body made of a polymeric material, which contacts the surface that is being sealed and is capable of relative displacement with a sealing surface. The sealing surface is interrupted in the movement direction by at least two grooves, extending in the peripheral direction, that have a spacing between them. The spacing consists of at least one land that extends in the axial direction between the mutually adjacent grooves, such that the ratio A between the width of the land and the width of the grooves in the movement direction is 1:2 to 200:1, the ratio B between the width and depth of the grooves is 10:1 to 1:5, and the depth of the grooves has a value of 1 to 200 .mu.m.

REFERENCES:
patent: 2606086 (1952-08-01), Rappi
patent: 2643147 (1953-06-01), Funkhouser et al.
patent: 2793889 (1957-05-01), Potter, Jr.
patent: 2997318 (1961-08-01), Lansky et al.
patent: 3268235 (1966-08-01), Jacobellis
patent: 4061346 (1977-12-01), Coleman et al.
patent: 4886281 (1989-12-01), Ehrmann et al.
patent: 4995623 (1991-02-01), Wada et al.
patent: 5328178 (1994-07-01), Nies

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