The AS568-045 SIMRIZ Z7257 is a reliable sealing solution with a 4" inner diameter and a 4-1/8" outer diameter, featuring a thickness of 1/16". Manufactured by Freudenberg-NOK, this seal is engineered for high performance in various industrial applications. The SIMRIZ material provides exceptional resistance to chemicals and temperature fluctuations, making it ideal for harsh environments. This product complies with industry standards, ensuring compatibility with a wide range of systems. The Z7257 is perfect for hydraulic and pneumatic applications, delivering a secure fit and long-lasting reliability.