The Freudenberg-NOK N903X O-ring features a size of 0.609" with a cross-section of 0.139" made from high-quality 90 NBR (Nitrile Butadiene Rubber). This material offers excellent resistance to oils, fuels, and other chemicals, making it ideal for various industrial applications. The O-ring is designed to provide a reliable seal in dynamic and static applications, ensuring optimal performance in hydraulic and pneumatic systems. With a durometer rating of 90, it maintains its shape and integrity under pressure, making it suitable for high-pressure environments. The N903X is compliant with industry standards, ensuring compatibility with a wide range of systems. This O-ring is perfect for use in automotive, aerospace, and manufacturing sectors.