The Freudenberg-NOK 0.210" 70 VMQ O-Ring SI70A4 is specifically designed for high-performance sealing in various applications. This O-ring features a hardness rating of 70, crafted from VMQ (vinyl methyl silicone) material, which offers exceptional resistance to heat and chemicals. With a cross-section of 0.210 inches, it complies with AS568 standards, ensuring compatibility across multiple systems. This O-ring is ideal for automotive, aerospace, and industrial applications, providing a reliable seal that maintains integrity under pressure and temperature fluctuations.