The AS568-252 SIMRIZ Z7257 is a precision-engineered seal with a 5-1/4" inner diameter and a 5-1/2" outer diameter, featuring a thickness of 1/8". Manufactured by Freudenberg-NOK, this seal is designed for high-performance applications, offering excellent resistance to chemicals and extreme temperatures. The Z7257 meets industry standards, ensuring compatibility with various hydraulic and pneumatic systems. Its durable construction provides a reliable seal, enhancing the efficiency and longevity of equipment in demanding environments.