The AS568-171 SIMRIZ Z7257 is a robust sealing solution with an inner diameter of 8" and an outer diameter of 8-3/16", featuring a thickness of 3/32". This product from Freudenberg-NOK is designed for high-performance applications, utilizing SIMRIZ material known for its superior chemical and temperature resistance. The Z7257 meets industry standards, ensuring compatibility with various systems, particularly in hydraulic and pneumatic environments. This seal provides a reliable fit, enhancing the durability and efficiency of your equipment.