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 OnlyPressure Measurement VacuumCustom Vacuum Components / Vented ScrewsGS Series Ball ValvesSuper Sale Items316 Stainless Steel ComponentsISO 320, SS Center Ring, Viton, Alum Retainer$385.00Product Code: MKISO320CRR Category: ISO,LF Flanges and FittingsCentering Ring SS, Viton O-ring, Alum RetainerAvailability: In stock ISO 320, SS Center Ring, Viton, Alum Retainer quantity Add to cart Free Shipping on Orders Over $100**Exclusions apply. See Shipping & Return Policy for details.A(inch)B(inch) 13.6412.25 Related products TEE, ADAPTIVE, KF (QF) 40 to 1/8″ FEMALE, NPT, ALUM $81.00 ADAPTER, 1/4″ MALE NPT, KF (QF) 40, 304 SS $53.03 Sale! KF (QF) to Male NPT Adapter,1/2″ MALE NPT, KF (QF) 16, 304 SS $51.63 $38.87 (out of stock) Sale! ADAPTER, 1/4″ MALE NPT, KF (QF) 25, 304 SS $51.64 $34.50