O-Ring, PTFE Back Catalog number: CTS-11092 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10493 Check Valve Cartridge, 2/pk Price on request CTS-A125 Inlet Check Valve Assembly Price on request CTS-10285 TFE 3-Way Valve 4 (V4) Price on request