The PWR 4.25 x 4.5 x 1 9400 Piston Wear Ring from Freudenberg-NOK is designed for high-efficiency hydraulic systems. With a diameter of 4.25 inches and a thickness of 1 inch, this wear ring minimizes friction and enhances the longevity of pistons. Its robust construction ensures durability under high-pressure conditions, making it a reliable choice for demanding applications. The wear ring is compatible with various hydraulic fluids and adheres to industry standards, ensuring optimal performance and reliability in your machinery.