The Freudenberg-NOK N903X O-Ring is engineered for optimal sealing performance with a diameter of 0.210 inches and a hardness rating of 90 Shore A. Constructed from high-quality Nitrile (NBR), this O-Ring is resistant to a variety of oils and chemicals, making it suitable for diverse industrial applications. Its precise dimensions ensure a perfect fit in hydraulic and pneumatic systems, effectively preventing leaks and maintaining system efficiency. This O-Ring complies with industry standards, providing reliability and durability in demanding environments.