The PWR 4 x 4.25 x 1 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 outer diameter and 4.25 inches in inner diameter, it fits a variety of standard hydraulic cylinders. The wear ring is engineered to reduce friction and wear, enhancing the efficiency of your hydraulic system. It complies with industry standards, ensuring compatibility with various systems. Upgrade your equipment with this reliable piston wear ring for improved operational efficiency.