The AS568-464 17 1/2" ID x 18" OD x 1/4" SIMRIZ SZ481 O-ring from Freudenberg-NOK is engineered for optimal sealing performance in industrial environments. Made from durable SIMRIZ material, this O-ring provides excellent resistance to a variety of chemicals and high temperatures. With an inner diameter of 17.5 inches and an outer diameter of 18 inches, it complies with AS568 specifications, ensuring a perfect fit for various systems. The 1/4 inch thickness ensures a reliable seal, making it suitable for hydraulic and pneumatic applications. This product meets industry standards for quality and performance.