The Freudenberg-NOK OR 6.975" 0.275" 90 HNBR H901B seal is engineered for optimal sealing performance in industrial applications. Constructed from high-grade HNBR, this O-ring offers excellent resistance to heat, oil, and chemicals, ensuring durability in challenging environments. With an outer diameter of 6.975" and a cross-section of 0.275", it fits standard applications and complies with industry standards. Ideal for hydraulic and pneumatic systems, this seal guarantees a reliable and durable seal under pressure, making it a preferred choice for engineers and maintenance professionals.