| 摘要 |
The fastener assembly comprises an upwardly open first cup (48), having a central hole in its bottom with a fastening bolt (60) extending therethrough. An upper second cup (100) is fitted in the opening of the first cup. The second cup has a central portion forming a wall transverse to the bolt axis and spaced above the bolt head. A hardened seal (96) extends across and above the transverse wall and forms a seal across the opening of the first cup. |
