PTFE Diaphragm, 2/pk Back Catalog number: 11-2891 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10493 Check Valve Cartridge, 2/pk Price on request PL7100150 MarvelXACT PLS 100µm x 150mm Price on request CTS-10989 Face Seals, 4/pk Price on request