The Freudenberg-NOK 0.921" NBR O-Ring is engineered for optimal sealing performance in various industrial applications. Constructed from durable Nitrile Butadiene Rubber (NBR) with a hardness of 70 durometer, this O-Ring is designed to withstand harsh conditions. Its 0.139" cross-section ensures a secure fit in hydraulic and pneumatic systems. This O-Ring complies with industry standards, making it a reliable choice for applications requiring resistance to oils and chemicals. Its robust design guarantees longevity and effectiveness in maintaining pressure and preventing leaks.