The Freudenberg-NOK AS568-447 SIMRIZ SZ498 is engineered for superior sealing performance with a 9" inner diameter and 9 1/2" outer diameter, featuring a thickness of 1/4". Constructed from high-quality SIMRIZ material, this seal is resistant to a variety of chemicals and extreme temperatures, making it ideal for demanding industrial environments. It complies with relevant industry standards, ensuring compatibility with various systems. This seal is perfect for hydraulic and pneumatic applications, providing a reliable and effective sealing solution.