The PWR 4.25 x 4.5 x 1.25 9400 Piston Wear Ring by Freudenberg-NOK is engineered for high-performance hydraulic systems. With a diameter of 4.25 inches and a thickness of 1.25 inches, 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.