The OR 0.859 0.139" 70 NBR O-Ring by Freudenberg-NOK is engineered for effective sealing in various applications. With a diameter of 0.859 inches and a cross-section of 0.139 inches, this O-ring is suitable for hydraulic and pneumatic systems. Constructed from NBR material, it provides excellent resistance to oil and other fluids, ensuring durability and performance. The 70 durometer rating indicates its hardness, making it ideal for high-pressure applications. This O-ring complies with industry standards, ensuring reliability and efficiency in your operations.