The AS568-043 SIMRIZ SZ498 is a precision-engineered seal with a 3-1/2" inner diameter and a 3-5/8" outer diameter, featuring a thickness of 1/16". This product from Freudenberg-NOK is made from high-performance SIMRIZ material, which offers excellent resistance to a wide range of chemicals and temperature fluctuations. Designed for use in hydraulic and pneumatic applications, the SZ498 meets stringent industry standards, ensuring compatibility and reliability. This seal is ideal for enhancing the performance and longevity of your equipment.