The Freudenberg-NOK AS568-429 O-Ring offers a 5" inner diameter and a 5-1/2" outer diameter, with a thickness of 1/4". Made from NBR (BUNA) 70 material, this black O-Ring is UL listed, ensuring it meets safety and performance standards for electrical applications. Its robust construction provides excellent resistance to oils, fuels, and other chemicals, making it ideal for use in automotive and industrial settings. This O-Ring is designed to deliver reliable sealing performance, preventing leaks and ensuring the integrity of your systems.