Sapphire Plunger Back Catalog number: CTS-2369 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-4126 Plunger Seal and Back Up Ring Price on request CTS-12013 Tungsten Lamp (1000 hr) Price on request CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request