| 摘要 |
<p>A gasket (10) is made of springy metal and has a transverse cross section which is generally in the shape of an X. The cross section has two arms (12 and 14) which project inwardly of the hole through the gasket, and two arms (16 and 18) which project outwardly of said hole. Each of the arms is adapted to resiliently engage a body to form a seal therewith around the hole. The inwardly projecting arms (12 and 14) have a different level of stiffness to the outwardly projecting arms (16 and 18), the arms with the lower level of stiffness being more widely spaced from one another than the arms with the higher level of stiffness.</p> |
