The profile AF wiper ring serves the purpose of preventing the penetration of dust, dirt, sand, and metal swarf into hydraulic cylinders. This reduces the risk of scoring caused by contaminants from external sources imbedded in the sliding parts.

The excellent wiping effect is achieved by the special design of the wiper lip. The proven TUP for high abrasion resistance, minor permanent deformation, and robustness vis-a-vis external mechanical impact. By means of a press fit of the metal scan vis-a-vis the external diameter of the seal housing, the wiper is securely held in place in the axially open installation housing. Thanks to the flush end fit of the wiper lip with the cylinder head the lip enjoys a high degree of protection against damage from external causes.