The Freudenberg-NOK N750FM O-Ring, measuring 3.487 inches in diameter with a 0.103 inch cross-section, is made from durable NBR (Nitrile Butadiene Rubber). This O-Ring features a hardness of 75 durometer, providing excellent sealing capabilities in a variety of applications. It is resistant to oils, fuels, and chemicals, making it ideal for use in automotive, industrial, and hydraulic systems. The N750FM O-Ring meets industry standards for performance and reliability, ensuring long-lasting service in challenging environments.