The Freudenberg-NOK AS568-368 O-Ring features a 7-3/4" inner diameter and an 8-1/8" outer diameter, with a thickness of 3/16". Constructed from NBR (BUNA) 70 material, this black O-Ring is UL certified, making it suitable for applications requiring compliance with safety standards. Its design ensures excellent sealing capabilities against a variety of fluids, making it ideal for use in hydraulic systems, pumps, and other industrial applications. This O-Ring is engineered for durability and reliability, providing long-lasting performance in demanding environments.