The Freudenberg-NOK O-Ring, measuring 6.975" in diameter and 0.210" in cross-section, is constructed from high-grade VMQ silicone rubber with a hardness rating of 70. This O-Ring is specifically designed for effective sealing in various applications, providing exceptional resistance to heat and chemicals. It complies with industry standards, ensuring compatibility with a wide range of systems, including automotive and industrial machinery. The SI70A4 specification guarantees a long-lasting and reliable sealing solution.