Sapphire Plunger Back Catalog number: CTS-2369 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-11119-02 Head Plunger Seal, 2/pk Price on request CTS-21100 UPLC Check Valve Assy, Spring Loaded Price on request