The Freudenberg-NOK AS568-342 O-Ring is designed for food and pharmaceutical applications, featuring a 3-5/8" inner diameter and a 4" outer diameter with a thickness of 3/16". Made from FDA-compliant NBR (BUNA) 70 material, this black O-Ring ensures safety and reliability in sensitive environments. It provides excellent sealing capabilities against various fluids, making it suitable for use in pumps, valves, and other equipment where hygiene is paramount. This O-Ring meets stringent industry standards, ensuring compliance and performance in critical applications.