| 摘要 |
<p>PCT No. PCT/GB94/01171 Sec. 371 Date Jun. 12, 1995 Sec. 102(e) Date Jun. 12, 1995 PCT Filed May 31, 1994 PCT Pub. No. WO94/29621 PCT Pub. Date Dec. 22, 1994A sealing gasket having a spiral wound gasket element and an inner annular ring having faces formed of exfoliated graphite material.</p> |
