The Freudenberg-NOK U959BB is a durable FKM O-ring with a diameter of 3.500 inches and a thickness of 0.250 inches, rated at 75 Shore A hardness. This O-ring is engineered for high-performance sealing in various applications, offering excellent resistance to heat, chemicals, and wear. Its precise dimensions ensure a secure fit, while the robust FKM material guarantees long-lasting performance. The U959BB complies with industry standards, making it a reliable choice for automotive and industrial applications.
