The Freudenberg-NOK 4.100" 90 HNBR O-Ring is a high-performance sealing solution designed for industrial applications. Made from durable HNBR material, it offers excellent resistance to heat, oil, and chemicals. With a diameter of 0.210" and a hardness rating of 90, this O-ring ensures a secure seal under various pressures. It meets industry standards for quality and reliability, making it suitable for hydraulic and pneumatic systems. The precise dimensions of this O-ring ensure compatibility with a wide range of applications, providing a dependable sealing solution for your needs.