O-Ring, PTFE Back Catalog number: CTS-11092 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21012 Compression Screws & Ferrules, 1/16", SS, 5/pk Price on request 11-1599 Check Valve Assembly, Outlet Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request