The Freudenberg-NOK 0.210" 70 VMQ O-Ring SI70A4 is a robust sealing solution designed for demanding industrial environments. This O-ring, with a hardness of 70, is made from high-performance VMQ (vinyl methyl silicone), providing excellent resistance to extreme temperatures and various chemicals. Measuring 0.210 inches in diameter, it adheres to AS568 specifications, ensuring compatibility with a wide range of applications. Ideal for use in hydraulic systems and machinery, this O-ring delivers reliable sealing performance, enhancing system efficiency and longevity.