The AS568-242 SIMRIZ Z7257 is a robust sealing solution with a 4" inner diameter and a 4-1/4" outer diameter, featuring a thickness of 1/8". Manufactured by Freudenberg-NOK, this seal is designed to withstand harsh conditions, offering excellent resistance to oils and chemicals. Its high-quality SIMRIZ material ensures durability and reliability in various applications, including hydraulic and pneumatic systems. This product meets industry standards, making it a trusted choice for professionals seeking dependable sealing solutions.