Patent ID: 6419237
Filing Date: 2002-07-16
Classification: E21B,F16J

Abstract:
An apparatus for forming a forming a seal between first and second elements, having a central longitudinal axis (500; 510), and comprising:a first annular polymeric sealing member (45A; 45B) having a first surface (49A; 49B) for sealingly engaging the first element (110; 106; 202) and a second surface (47A; 47B) for sealingly engaging the second element (22A; 22B; 210); a second annular polymeric sealing member (44A; 44B) having a first surface (48A; 48B) for sealingly engaging the first element and a second surface for sealingly engaging the second element; an annular retaining member (66A; 66B) having: an annular cap portion (67A; 67B) having: an inboardmost portion (71A; 71B) covering a portion (62A; 62B) of the first sealing member outboard of the first surface of the first sealing member; and an outboardmost portion (72A; 72B) covering a portion (56A; 56B) of the second sealing member inboard of the first surface of the second sealing member; and at least one annular collar portion (75A; 75B; 76A; 76B) depending from the cap and directed toward the second element; and at least one additional annular collar portion (78A; 78B) formed integrally with the second element, intermeshed with the at least one collar portion of the annular retaining member and projecting toward the cap portion.