Abstract: A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing dam over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular end section with has a first annular sealing surface, a second annular end section with a second annular sealing surface and an annular center section extending between the first and second annular end sections to form a ring having a central passageway with a center longitudinal axis. The third annular section is frustoconical tube with the first and second annular end sections being contiguously arranged at opposite ends of the annular center section such that sealing loads applied substantially perpendicularly on the first and second annular sealing surfaces primarily deform due to torsional stress of the metallic seal.

Abstract: A flange and seal assembly is provided with an annular sealing ring and a mounting component. The annular sealing ring is retained as a part of the mounting component. The mounting component has a mounting end with a mounting flange extending outwardly from the mounting end, and an annular seal receiving recess formed in an axial end surface of the mounting end, and a retaining element extending from the mounting end. A portion of the sealing ring is axially retained between the retaining element and the axial end surface of the mounting end.

Abstract: A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing darn over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular end section with has a first annular sealing surface, a second annular end section with a second annular sealing surface and an annular center section extending between the first and second annular end sections to form a ring having a central passageway with a center longitudinal axis. The third annular section is frustoconical tube with the first and second annular end sections being contiguously arranged at opposite ends of the annular center section such that sealing loads applied substantially perpendicularly on the first and second annular sealing surfaces primarily deform due to torsional stress of the metallic seal.