O-ring,PTFE,3/4 In., Series Pro, Compatible with Grainger Part Number 2CAV2, 4RN28, 5U671, 5U672, 5U673, Product Type O-Ring, Compatible with Manufacturer Part Number 666150-244-C, 666151-2EB-C, 666152-2EB-C, 666161-244-C, Compatible with Series Universal, Compatible with Brand ARO, Ingersoll Rand