The OR 4.989 0.070" 90 NBR N901W O-ring from Freudenberg-NOK is engineered for high-performance sealing in various applications. This O-ring features a diameter of 4.989 inches and a cross-section of 0.070 inches, made from 90 durometer Nitrile Butadiene Rubber (NBR), ensuring excellent resistance to oils and fuels. Its robust construction meets industry standards, making it suitable for hydraulic and pneumatic systems. This O-ring is designed to provide a reliable seal, preventing leaks and enhancing system efficiency.