The PWR 4 x 4.25 x 0.75 9400 Piston Wear Ring by Freudenberg-NOK is designed for high-performance hydraulic applications. This wear ring features dimensions of 4 inches outer diameter and 4.25 inches inner diameter, with a thickness of 0.75 inches, ensuring a perfect fit for various hydraulic cylinders. Its robust design minimizes wear and friction, enhancing the efficiency and longevity of your hydraulic system. Built to meet industry standards, this wear ring guarantees compatibility and reliability in demanding environments. Upgrade your hydraulic equipment with this durable and efficient piston wear ring.