The Freudenberg-NOK AS568-387 SIMRIZ SZ485 O-Ring features an 18" inner diameter, 18-3/8" outer diameter, and a 3/16" cross-section. This high-performance sealing solution is crafted from advanced SIMRIZ material, ensuring excellent resistance to chemicals and high temperatures. Ideal for various industrial applications, it meets stringent ISO standards for reliability and durability. The O-ring is designed to provide a secure seal in dynamic and static applications, making it suitable for hydraulic and pneumatic systems. Its precise dimensions ensure compatibility with standard AS568 specifications, making it a versatile choice for engineers and maintenance professionals.