HomeHPLC Replacement PartsRinse Port Cap (w/hole), 10/pkRinse Port Cap (w/hole), 10/pk Rinse Port Cap (w/hole), 10/pk Add to quote This product is already in your quote request list. Browse the list Description Description Reference WB311 OEM Part 228-48331-92 Models: SIL-20A/AC, SIL-30AC/ACMP, i-Series