Products search Shop By Category Call 866-674-6225AdaptersCF 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 ComponentsBriskHeat®CENTER RING, ISO 250, VITON, ALUM., RETAINER$65.00Product Code: MKISO250CRAR Category: ISO,LF Flanges and FittingsAlum. Centering Ring with Viton O-ring +Alum. RetainerAvailability: In stock CENTER RING, ISO 250, 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) 11.1810.19 Related products CENTER RING, ISO 63, VITON, ALUM., RETAINER $20.30 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, 1/8″ MALE NPT, KF (QF) 16, 304 SS $45.32 $29.00 Sale! ADAPTER, 1/2″ MALE NPT, KF (QF) 25, 304 SS $61.71 $38.50