The Freudenberg-NOK Dichtomatik OR 5.359" 0.139" 90 NBR N901W is engineered for optimal sealing performance in various industrial applications. Constructed from high-grade Nitrile Butadiene Rubber (NBR), this O-ring provides excellent resistance to petroleum-based fluids and high temperatures. With an inner diameter of 5.359 inches and a cross-section of 0.139 inches, it fits perfectly in standard applications. This O-ring complies with industry standards, ensuring reliability and longevity in critical sealing applications.