The PWR 4 x 4.25 x 0.625 9400 Piston Wear Ring from Freudenberg-NOK is engineered for optimal sealing in hydraulic systems. This wear ring features a diameter of 4 inches and a thickness of 0.625 inches, ensuring a precise fit that minimizes leakage. Constructed from high-quality materials, it provides excellent resistance to wear, making it ideal for high-pressure applications. This piston wear ring complies with industry standards, ensuring compatibility with a variety of hydraulic systems. Its durable design contributes to the efficiency and longevity of your equipment, reducing maintenance needs.