The Freudenberg-NOK OR 0.671" 90 HNBR H901B is a high-performance O-ring designed for industrial applications. Made from HNBR (Hydrogenated Nitrile Butadiene Rubber), this O-ring offers excellent resistance to heat, oil, and chemicals, making it suitable for demanding environments. With a cross-section of 0.139 inches, it ensures a reliable seal under pressure. This product meets industry standards for quality and durability, ensuring compatibility with various systems. Ideal for use in hydraulic and pneumatic applications, it provides a dependable solution for sealing needs.