Patent ID: 7469905
Filing Date: 2008-12-30
Classification: F16J,F16L,Y10S

Abstract:
1. A permanently lubricated film gasket for sealing adjoining first and second pipe sections, the permanently lubricated gasket comprising: a) a support section shaped to have a portion fit within a recess of said adjoining first pipe section, the support section having a first durometer; b) a sealing section extending from said support section and adapted to form flexible sealing contact with an inner diameter of adjoining second pipe section, the sealing section further comprising leading and trailing sides located about an apex of said sealing section, the sealing section additionally comprising a second durometer lower than said first durometer; c) a permanently lubricated film providing a relatively low coefficient of friction relative to said sealing and support sections extending along and embedded into a select portion of said leading side below said apex, the permanently lubricated film in combination with said sealing section's leading and trailing sides providing differing degrees of mobility relative to the movement of the adjoining first and second pipe sections such that movement against the leading side in a first direction provides lubrication to the inner diameter facilitating movement of contacting pipe structures in the adjoining first and second pipe sections and movement against the trailing side in a second direction opposite said first direction provides friction to the inner diameter, inhibiting movement of contacting pipe structures in the adjoining first and second pipe sections.