SKF PWB 25X33.6X5.3 Polyurethane snap-in wiper seal with a single lip, an additional static edge and axial ridges on the inside diameter

Hydraulic wiper seals prevent contaminants from entering a cylinder assembly and hydraulic system. PWB seals are polyurethane snap-in wiper seals. They have a single-lip design, with an additional axial static sealing edge giving the wiper a fixed axial position in the housing groove. Axial ridges on the inside diameter behind the sealing lip prevent the wiper seal from getting a distorted shape in the housing which could lead to reduced wiping efficiency.