The AS568-254 SIMRIZ SZ485 seal offers a 5-1/2" inner diameter and a 5-3/4" outer diameter, with a thickness of 1/8". This high-quality seal from Freudenberg-NOK is designed for reliable performance in various industrial applications. The SIMRIZ material is known for its durability and resistance to harsh chemicals and high temperatures, making it ideal for hydraulic and pneumatic systems. The SZ485 meets industry standards, ensuring compatibility and reliability. This seal is engineered to provide a secure and effective seal, contributing to the longevity of your equipment.