Needle Seal, Vespel® Back Catalog number: CTS-10686 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-2891 PTFE Diaphragm, 2/pk Price on request CTS-21422 Needle Seal Kit Price on request CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request