| 摘要 |
Disclosed is a metal seal ring by which conduits are hermetically engaged by a pressure in accordance with a fluid pressure. The metal seal ring is comprised of a first annular seal surface (12a) configured so as to be in contact with a first flange, a second annular seal surface (12b) configured so as to be in contact with a second flange, a pressure receiving surface (12f) which is formed between the first and second seal surfaces and which defines an annular recessed portion (12e) which is radially inwardly open, and an annular seal portion (12) comprised of a first seal portion (12A) which is elastically deformable and formed between the annular recessed portion (12e) and the first seal surface (12a) and a second seal portion (12B) which is elastically deformable and formed between the annular recessed portion (12e) and the second seal surface (12b). An annular seal ring main body (14) which is engaged with the first and second flanges to prevent the first and second flanges from moving closer to the metal seal ring in the axial direction and prevent an excessive force from being applied to the first and second seal portions, is provided on the radially outer side of the seal portion (12). The first and second seal portions (12A, 12B) are respectively pressed against the first and second flanges due to the fluid pressure received by the pressure receiving surface. |
