Metal-to-metal non-elastomeric seal stack

Details Metal-to-metal non-elastomeric seal stack Metal-to-metal non-elastomeric seal stack

2005-10-24

2008-11-04

Bagnell, David J (Department: 3672)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C166S332400, C277S342000

Reexamination Certificate

active

07445047

ABSTRACT:
An improved seal assembly for use in sliding sleeve valves. The seal assembly incorporates a number of annular, chevron-shaped seal elements that are in a stacked configuration and preferably formed of a thermoplastic material to provide a fluid seal between the outer housing and the inner sleeve member of the sliding sleeve valve. In addition, the seal assembly preferably includes a pair of annular metallic seal members that have a C-ring cross-section (a “C-seal”). On opposite axial sides of each metallic C-seal are a C-seal support ring and an end adapter that are shaped and sized to assist the metallic C-seals to be axially compressed and uncompressed to resiliently seal against both the inner sleeve member and the outer housing.

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