The AS568-155 SIMRIZ Z7257 is a premium sealing solution featuring a 4" inner diameter and a 4-3/16" outer diameter with a thickness of 3/32". Manufactured by Freudenberg-NOK, this seal is designed for high performance in various industrial applications. The SIMRIZ material offers excellent resistance to chemicals and temperature variations, ensuring durability and reliability. This seal meets industry standards, making it compatible with a wide range of systems. Ideal for hydraulic and pneumatic applications, the Z7257 guarantees a secure fit and outstanding performance.