The Freudenberg-NOK N903X O-ring, featuring a diameter of 1.359" and a cross-section of 0.139", is made from high-performance 90 NBR (Nitrile Butadiene Rubber). This O-ring is engineered for superior sealing performance in applications involving oils and fuels. With a durometer rating of 90, it provides excellent resistance to deformation under pressure, making it suitable for both static and dynamic sealing applications. The N903X complies with industry standards, ensuring compatibility with numerous systems in automotive, aerospace, and industrial sectors. Its reliable performance and durability make it a critical component for effective sealing in hydraulic and pneumatic systems.