The AS568-434 SIMRIZ SZ501 is a high-quality sealing solution with a 5-5/8" inner diameter and a 6-1/8" outer diameter, featuring a thickness of 1/4". Manufactured by Freudenberg-NOK, this seal is made from durable SIMRIZ material, known for its excellent resistance to a variety of chemicals and temperature variations. Ideal for use in hydraulic and pneumatic applications, the SZ501 meets industry standards for compatibility and reliability. This seal is designed to provide a secure and effective sealing solution, ensuring optimal performance and longevity of your equipment.