The AS568-465 18" ID x 18 1/2" OD x 1/4" SIMRIZ SZ134 O-ring by Freudenberg-NOK is a reliable sealing component designed for industrial applications. Constructed from high-performance SIMRIZ material, this O-ring offers excellent resistance to chemicals and high temperatures, making it ideal for harsh environments. With an inner diameter of 18 inches and an outer diameter of 18.5 inches, it conforms to AS568 specifications, ensuring compatibility with various systems. The 1/4 inch thickness provides a secure seal, preventing leaks and maintaining system efficiency. This product meets industry standards for quality and reliability.