Seal Extension Tube Back Catalog number: 11-2569 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-4122 PTFE Diaphragm, LC-30AD/i-Series, 2/pk Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-11335 ACQUITY H-Class QSM Performance Maintenance Kit Price on request