Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request CTS-10686 Needle Seal, Vespel® Price on request CTS-3195 250μL Syringe Tip Price on request