Wipers

Wipers in pneumatic and hydraulic cylinders protect the interior of the cylinder from the penetration of external contaminants when the rod is retracted.
Primary and secondary seals as well as the guides of modern sealing systems require reliable protection the use of wipers. Dirt, dust, moisture and other environmental influences must not contaminate the operating medium and must above all be kept away from the pressure-loaded sealing edges and other contact zones. Depending on the application, simple wipers with or without metal reinforcement as well as double wipers with or without pressure relief come into use.