PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11371 ACQUITY I2V BSM Performance Maintenance Kit Price on request 11-3321 Wash Seal Gasket, 6/pk Price on request 11-1599 Check Valve Assembly, Outlet Price on request