Ring filter for use in cylindrical hollow body i.e. shaft, in valve housing to filter e.g. hydraulic oil, has wall sections provided with wedge-shaped profile running parallel to axis of cylinder at two connection sections of frame

摘要

The filter has a thickening part designed as a planar surface and formed at a distal end of springy wall sections turned to a slot (10). Radial wall thickness of the thickening part is larger than radial wall thickness of the wall sections. The wall sections comprise constant wall thickness measured along radial direction and are provided between the thickening part and a proximal end. The wall sections are provided with a wedge-shaped profile engaging in grooves in a closing position and running parallel to an axis of a cylinder at two connection sections (11, 12) of a frame (1).