The Freudenberg-NOK O-Ring measures 5.725" in diameter and 0.210" in cross-section, made from high-quality VMQ silicone rubber with a hardness rating of 70. This O-Ring is designed for reliable sealing in various applications, ensuring durability and resistance to extreme temperatures. It meets industry standards for performance and compatibility, making it suitable for use in automotive, industrial, and hydraulic systems. The SI70A4 designation indicates its specific formulation for enhanced longevity and resilience.