Freudenberg-NOK's Dichtomatik OR 0.275" 90 HNBR H901B is a premium O-ring designed for optimal sealing in industrial applications. With a diameter of 0.275 inches and a hardness of 90 durometer, this HNBR O-ring offers exceptional resistance to heat, oils, and chemicals, making it ideal for hydraulic and pneumatic systems. Its robust design ensures compliance with industry standards, providing a reliable seal that minimizes leakage and enhances system performance. This O-ring is a critical component for maintaining the integrity of various machinery and equipment.