The AS568-223 SIMRIZ SZ501 seal features a 1-5/8" inner diameter and a 1-7/8" outer diameter with a thickness of 1/8". This product, manufactured by Freudenberg-NOK, is made from high-performance SIMRIZ material, known for its excellent chemical and temperature resistance. Ideal for hydraulic and pneumatic applications, the SZ501 meets industry standards for compatibility and reliability. This seal is designed to provide a secure fit and long-lasting performance, making it an essential component in various industrial systems.