The AS568-341 SIMRIZ Z7257 O-ring features a 3-1/2" inner diameter and a 3-7/8" outer diameter with a thickness of 3/16". Manufactured by Freudenberg-NOK, this O-ring is designed for high-performance sealing applications, ensuring durability and reliability in various environments. The SIMRIZ material offers excellent resistance to chemicals and high temperatures, making it suitable for demanding industrial applications. This O-ring complies with industry standards, ensuring compatibility with a wide range of systems.