The 4.5 x 5 x 0.375 NBR Loaded Symmetrical U-Cup from Freudenberg-NOK is a reliable sealing solution for hydraulic and pneumatic applications. Made from durable NBR (Nitrile Butadiene Rubber), it offers excellent resistance to oils and fuels, ensuring a long service life. With an outer diameter of 4.5 inches, an inner diameter of 5 inches, and a cross-section of 0.375 inches, this U-Cup is designed for easy installation and effective sealing under pressure. It meets industry standards for quality and performance, making it suitable for various applications.