Patent ID: 8302972

Claim:
A gasket ( 1 , 40 , 41 , 56 , 62 ) and seat ( 2 ) system suitable for sealing a joint, wherein the gasket is made of a polymeric material, said gasket comprising: an inner portion ( 10 ) having a wall ( 17 ) forming an inner diameter of the gasket, the wall ( 17 ) in contact with an interior and high pressure side of the joint, and an outer portion ( 11 ), arranged radially outside said inner portion, and said outer portion extends axially forming radial end walls ( 12 , 13 ), wherein the inner portion ( 10 ) of the gasket ( 1 ) is formed with an angled wall ( 18 ) connected at the wall ( 17 ) and at one of the radial end walls ( 12 , 13 ) so that the wall and angled wall are contiguous surfaces forming an angle, whereby the inner portion ( 10 ) increases in breadth from the outer portion ( 11 ) to the wall in contact with the interior and high pressure side ( 17 ) along the angled wall ( 18 ), wherein the angled wall ( 18 ) parallels a matching angled wall ( 25 ) of the seat ( 2 ).