Freudenberg-NOK's AS568-465 18" ID x 18.5" OD x 1/4" SIMRIZ SZ501 O-ring is engineered for exceptional sealing in industrial applications. Made from durable SIMRIZ material, it provides excellent resistance to chemicals and high temperatures. The dimensions of 18" inner diameter and 18.5" outer diameter ensure compliance with AS568 standards, making it suitable for various systems. With a thickness of 1/4", this O-ring delivers reliable sealing for hydraulic and pneumatic applications. Its adherence to industry standards guarantees performance and durability in demanding environments.