The Freudenberg-NOK SIMRIZ SZ501 O-Ring is engineered with a 7-3/4" inner diameter, 8" outer diameter, and a 1/8" thickness, making it ideal for various sealing applications. Made from high-quality Nitrile Butadiene Rubber (NBR), this O-Ring offers excellent resistance to oils and chemicals, ensuring long-lasting performance. It is rated for a wide temperature range, making it suitable for both hydraulic and pneumatic systems. This O-Ring adheres to industry standards, providing a reliable solution for preventing leaks in critical applications.