The Freudenberg-NOK N903X O-Ring features a robust design with a cross-section of 0.210 inches and a diameter of 4.850 inches, crafted from 90 durometer NBR (Nitrile Butadiene Rubber). This O-Ring is engineered for exceptional sealing performance in hydraulic and pneumatic applications, providing excellent resistance to oils, fuels, and other fluids. Its reliable construction ensures compliance with industry standards, making it a preferred choice for engineers seeking durability and efficiency in their sealing solutions.