The Freudenberg-NOK N901W O-Ring measures 16.955" in diameter and 0.139" in cross-section, constructed from high-quality 90 NBR (Nitrile Butadiene Rubber). This O-Ring is engineered for reliable sealing in various industrial applications, providing excellent resistance to oils and chemicals. Its robust design ensures durability and performance in hydraulic and pneumatic systems, adhering to industry standards for quality and compatibility. The NBR material enhances longevity, making it suitable for demanding environments.