| 摘要 |
A pressure released wiper assembly is arranged to fit into a ring-shaped groove in a cylinder or at a piston rod. The pressure released wiper with a V- or U-shaped cross section includes an opening in the axial direction to a potential contaminated side of the wiper assembly, a ring shaped base portion, a ring disk shaped rear portion, a lip portion, one or more through openings from the opening through the rear portion to a gap formed between the cylinder wall and the rod or piston outside the ring-shaped groove, and one or more filters covering at least the one or more through openings to the potential contaminated side of the wiper assembly in the filter holder. |
