The AS568-390 O-ring, with dimensions of 21" ID x 21-3/8" OD x 3/16", is crafted from SIMRIZ SZ485 by Freudenberg-NOK. This O-ring is engineered for superior sealing performance in various applications, including hydraulic and pneumatic systems. The SIMRIZ material offers excellent chemical resistance and thermal stability, making it ideal for demanding environments. With precise dimensions, this O-ring ensures a tight fit, preventing leaks and maintaining system integrity. It complies with industry standards, ensuring reliability and durability in critical applications.