PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11142 Tube Assy, Inject Outlet Price on request CTS-2962 Plunger Seal, Gold Price on request CTS-10493 Check Valve Cartridge, 2/pk Price on request