Patent ID: 9109700
Filing Date: 2015-08-18
Classification: F16J

Abstract:
1. A gasket having a thickness between two sealing surfaces and further having a length and a width, the width being at least 1.5 times as large as the thickness, said gasket comprising a first discrete component and a second discrete component, the first and second components extending along the length of the gasket and the second component being arranged relative to the first component so as to separate the first component at least from one of the two sealing surfaces at a discrete sealing area, wherein the first component is substantially impermeable for gas and liquids in at least the width direction of the gasket, the second component is a porous fluoropolymer compressible in at least the thickness direction of the gasket, the Shore A hardness of the first component in the thickness direction being greater than the Shore A hardness of the second component in the thickness direction by a factor in the range of 1.5 to 2.5, wherein the Shore A hardness of the first component is in the range of 60 to 100 Shore A, the first component or a section of increased thickness thereof, as compared to its average thickness, extending along the length of the gasket has a width that is less than 50% of the width of the second component, and wherein, upon compression of said gasket over its entire width with an average pressure of 10 MPa, said second discrete component has a first density at said discrete sealing that is at least 1.25 times as great as a second density not in said discrete sealing area.