The Freudenberg-NOK AS568-330 O-Ring features a 2-1/8" inner diameter and a 2-1/2" outer diameter, with a thickness of 3/16". Made from metal detectable NBR (BUNA) 70 material, this black O-Ring is designed for applications where contamination detection is critical. Its robust construction provides excellent resistance to oils, fuels, and other chemicals, making it ideal for use in food processing and pharmaceutical industries. This O-Ring ensures reliable sealing performance, preventing leaks and ensuring the integrity of your systems.