The AS568-242 SIMRIZ SZ501 is engineered with a 4" inner diameter and a 4-1/4" outer diameter, featuring a thickness of 1/8". Manufactured by Freudenberg-NOK, this seal is designed for high performance in various industrial applications. The SIMRIZ material offers superior resistance to chemicals and high temperatures, making it ideal for challenging environments. This seal complies with industry standards, ensuring compatibility with a variety of systems. The AS568-242 SZ501 is perfect for hydraulic and pneumatic applications, providing a reliable sealing solution for professionals.