The 4.5 x 5 x 0.313 NBR Loaded Symmetrical U-Cup from Freudenberg-NOK is designed for reliable sealing in various industrial applications. Made from high-quality NBR (Nitrile Butadiene Rubber), this U-Cup offers excellent resistance to oils and fuels, ensuring durability and longevity. With dimensions of 4.5 inches in outer diameter, 5 inches in inner diameter, and a cross-section of 0.313 inches, it fits standard applications requiring a robust seal. This product meets industry standards for performance and reliability, making it an ideal choice for hydraulic and pneumatic systems.