| 摘要 |
Device (100) for producing a bore in the ground, with a spindle (7) which is led rotatably through a housing (2), and with a rotary seal arrangement (10) with which a rotary lead-through of the spindle (7) through the housing (2) can be sealed, which arrangement comprises a shaft seal (11) which acts between a cylindrical, first sealing face (12) of the spindle (7) and, concentrically thereto, a second sealing face (13) of the housing (2), wherein a labyrinth seal arrangement (25) is provided upstream of which the shaft seal (11) is situated as viewed from the outer side of the housing. |
