The AS568-466 18.5" ID x 19" OD x 1/4" SIMRIZ SZ498 O-ring by Freudenberg-NOK is engineered for superior sealing in industrial applications. Crafted from high-quality SIMRIZ material, it offers exceptional resistance to a wide range of chemicals and temperatures. With an inner diameter of 18.5" and an outer diameter of 19", this O-ring meets AS568 specifications, ensuring compatibility with various systems. The 1/4" thickness enhances its sealing performance, making it ideal for both hydraulic and pneumatic applications. This product adheres to industry standards, providing reliability and durability in challenging environments.