| 摘要 |
The device (10) comprises an elongate shaft and a head (20) having an abutment (30) for supporting an object. A shaft (40) defines an axis (50) in its longitudinal direction, where a sealing unit comprises a sealing surface (70) for a seal against the object. Another sealing surface is provided for a seal against the abutment. A cover element (100) comprises a metal or an alloy. |
