Wiper WPM 25x33x4/7 NBR+Stal

The WPM wiper ring is designed to protect the glands of hydraulic cylinders against external contamination. It prevents mud, water and dirt from entering the system, protecting the seals and the piston rod surface against accelerated wear. Design and function: The wiper is made of oil-resistant NBR rubber mounted in a steel case that ensures a secure and durable fit in the housing. The design is intended to be press-fitted into the housing, which guarantees firm retention even under intensive operation. The flexible rubber lip fits closely against the piston rod surface and effectively cleans it of dirt and moisture during the working stroke of the cylinder. Application: hydraulic cylinder glands, working mechanisms of construction and agricultural machinery, systems exposed to mud, dust and water. Materials: working part: NBR (nitrile rubber) – resistant to oils and greases, case: steel – provides rigidity and secure fixing. Technical section: - inner diameter (d): 25 mm - outer diameter (D): 33 mm - height / thickness (H): 4/7 mm Dimensions in inches: - d × D × H: 0.98" × 1.30" × 0.16"/0.28"