The SIMRIZ SZ498 is designed for optimal sealing with an inner diameter of 1" and an outer diameter of 1-3/8", along with a thickness of 3/16". This product adheres to AS568-318 specifications, ensuring it meets rigorous industry standards. Manufactured by Freudenberg-NOK, the SZ498 is crafted from high-quality materials that provide excellent resistance to chemicals and temperature fluctuations. Its precise dimensions guarantee a snug fit, making it an ideal choice for preventing leaks and maintaining system integrity.