The PWR 4 x 4.25 x 0.5 9400 Piston Wear Ring by Freudenberg-NOK is designed for optimal performance in hydraulic applications. This wear ring features a robust construction that ensures durability and longevity, making it ideal for high-pressure environments. With dimensions of 4 inches in diameter and a thickness of 0.5 inches, it fits seamlessly into various piston assemblies. The wear ring is engineered to reduce friction and wear, enhancing the efficiency of hydraulic systems. Its compatibility with standard hydraulic fluids and compliance with industry standards ensures reliable operation in demanding conditions.