The PWR 4.5 x 4.75 x 0.375 9800 Piston Wear Ring by Freudenberg-NOK is engineered for optimal performance in hydraulic systems. With an outer diameter of 4.5 inches, an inner diameter of 4.75 inches, and a thickness of 0.375 inches, this wear ring ensures a perfect fit for various piston assemblies. Made from high-quality materials, it provides excellent resistance to wear and tear, enhancing the longevity of your hydraulic systems. The wear ring is designed to maintain proper clearance and reduce friction, which is crucial for efficient operation. It complies with industry standards, making it suitable for a wide range of applications.