The Freudenberg-NOK Dichtomatik OR 3.734" 0.139" 75 NBR N750FM O-ring is engineered for optimal sealing performance in demanding applications. Constructed from high-grade NBR, it provides excellent resistance to various chemicals and temperatures. With a diameter of 3.734" and a thickness of 0.139", this O-ring is designed to fit seamlessly into standard fittings, ensuring a secure and leak-proof seal. Ideal for use in automotive, hydraulic, and pneumatic systems, it meets rigorous industry standards for reliability and longevity.