PTFE Diaphragm, LC-30AD/i-Series, 2/pk Back Catalog number: 11-4122 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-4063 Outlet Check Valve Price on request CTS-21012 Compression Screws & Ferrules, 1/16", SS, 5/pk Price on request CTS-10475 Sapphire Plunger Kit Price on request