The PWR 4.25 x 4.5 x 0.5 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 0.5 inches, this wear ring is designed to minimize friction and extend the life of pistons in hydraulic applications. Its robust construction ensures durability under high pressure, making it a reliable choice for demanding environments. The wear ring is compatible with various hydraulic fluids and meets industry standards, ensuring optimal performance and efficiency in your machinery.