The Freudenberg-NOK 4.350" 90 HNBR O-Ring is a high-performance sealing solution designed for industrial applications. Constructed from high-grade HNBR, this O-ring is resistant to heat, oil, and various chemicals. With a thickness of 0.210" and a hardness of 90, it provides a robust seal that withstands pressure and temperature fluctuations. This O-ring complies with industry standards, ensuring reliability in hydraulic and pneumatic systems. Its precise sizing guarantees compatibility across multiple applications, making it an essential component for effective sealing.