The Freudenberg-NOK 0.210" 70 VMQ O-Ring SI70A4 is engineered for optimal sealing performance in demanding environments. This O-ring, with a hardness of 70, is crafted from high-quality VMQ (vinyl methyl silicone) material, which offers superior resistance to extreme temperatures and chemicals. Measuring 0.210 inches in diameter, it adheres to AS568 standards, ensuring compatibility with various applications. This O-ring is perfect for use in hydraulic systems, automotive components, and industrial machinery, providing a reliable seal that withstands pressure and enhances system efficiency.