The AS568-345 SIMRIZ SZ485 oil seal features a 4" inner diameter and a 4-3/8" outer diameter, with a thickness of 3/16". This high-quality product from Freudenberg-NOK is engineered for reliability in various sealing applications. The SIMRIZ material is known for its superior chemical resistance, making it ideal for use in harsh conditions. This seal complies with industry standards, ensuring compatibility with numerous systems. Its robust design provides effective sealing, preventing leaks and maintaining system performance in hydraulic and pneumatic applications.