| 摘要 |
<p>A gasket for use with exhaust systems having at least one header flange (20) and an exhaust pipe flange (22) joined thereto. The gasket includes an inner annular sealing ring like member (40) deformable under pressure mounted on an outer annular metal retaining ring (42) sized to be mounted at a flange junction between said header flange (20) and said exhaust flange (22). The inner ring (40) has an outside diameter slightly greater than the inside diameter of the inner ring (40) to deformably support the inner ring (40) on the outer ring (42). The outer ring (42) inside diameter is greater than the inner diameter of the flange junction to permit the inner ring (40) to be compressed upon forming the junction. The inner ring (40) is formed from a non-asbestos fiber fused with spiral wound metal wire. It is preferred that the non-asbestos fiber is an aramid fiber and the spiral wound wire is stainless steel. The thickness of the inner ring (40) is at least twice as thick as the thickness of the outer ring (42). It is also preferred that the inner ring (40) has an inner diameter sufficiently large to avoid restricting flow of exhaust gas through the junction. For ease and permanence of mounting, the outer ring (42) is provided with angularly spaced holes patterned to align with bolt holes on the flanges.</p> |
