The AS568-148 SIMRIZ SZ501 seal features a 2-3/4" inner diameter and a 2-15/16" outer diameter with a thickness of 3/32". This product, manufactured by Freudenberg-NOK, is made from durable SIMRIZ material, known for its resistance to a wide range of chemicals and temperature variations. Ideal for use in hydraulic and pneumatic applications, the SZ501 meets industry standards for compatibility and performance. This seal ensures a secure fit, enhancing the reliability and longevity of your equipment in demanding environments.