Gold Plunger Seal, Analytical Heads Back Catalog number: CTS-10548 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-11121-02 Wash Seal, 2/pk Price on request