Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21262 Needle, Uncoated 20 Series Price on request 11-4121 Ceramic Plunger Holder Assembly, LC-10ADvp Price on request CTS-10476 Sapphire Plunger, Alliance Price on request