The Freudenberg-NOK HNBR O-Ring is a robust sealing solution measuring 7.484 inches in diameter with a hardness rating of 90 durometer. Constructed from HNBR (Hydrogenated Nitrile Butadiene Rubber), this O-Ring offers superior resistance to heat, oil, and chemicals, making it perfect for demanding environments. Its cross-section of 0.139 inches ensures compatibility with standard sealing grooves, providing a secure and leak-proof seal. Ideal for automotive and industrial applications, this O-Ring meets stringent quality standards for reliability and performance.