The Freudenberg-NOK 1.421" NBR O-Ring is a high-performance sealing solution made from durable Nitrile Butadiene Rubber (NBR) with a hardness of 70 durometer. This O-Ring features a cross-section of 0.139", making it ideal for use in hydraulic and pneumatic systems. Its robust design offers excellent resistance to oils, fuels, and chemicals, ensuring longevity in various applications. Meeting industry standards, this O-Ring provides a reliable seal that prevents leaks and maintains pressure, making it a trusted choice for demanding environments.