The AS568-155 SIMRIZ SZ501 is a high-quality sealing solution featuring a 4" inner diameter and a 4-3/16" outer diameter with a thickness of 3/32". Produced by Freudenberg-NOK, this seal is engineered for optimal performance in various industrial applications. The SIMRIZ material provides exceptional resistance to chemicals and temperature fluctuations, ensuring longevity and reliability. This seal complies with industry standards, making it suitable for diverse applications. Ideal for hydraulic and pneumatic systems, the SZ501 provides a secure and effective sealing solution.