Products search Shop By Category Questions? Email us!sales@mackvacuum.com AdaptersCF Flanges and FittingsHigh Vacuum Bellows SS HosesValvesWeld TubesISO Flanges and FittingsKF (QF) Flanges and FittingsAlcatel Vacuum Pump PartsLeybold Vacuum Pump PartsPfeiffer Vacuum Pump PartsWelch Vacuum Pump PartsGreases – SuppliesVacuum Rated HosesUniversities Only – FREE STUFF!Custom Vacuum Components / Vented ScrewsGS Series Ball ValvesSuper Sale Items316 Stainless Steel ComponentsKF Alum. Centering Ring w/ Viton O-ringShopKF (QF) Flanges and FittingsKF Alum. Centering Ring w/ Viton O-ring Showing all 5 results Default sortingSort by popularitySort by average ratingSort by latestSort by price: low to highSort by price: high to lowSort by name: A-ZSort by name: Z-A CENTER RING, KF (QF) 10, VITON, ALUMINUM $1.00 CENTER RING, KF (QF) 16, VITON, ALUMINUM $4.19 CENTER RING, KF (QF) 25, VITON, ALUMINUM $4.53 CENTER RING, KF (QF) 40, VITON, ALUMINUM $6.28 CENTER RING, KF (QF) 50, VITON, ALUMINUM $7.07