Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21566 PM Kit, Seal Wash for Binary Pump G4204A Price on request CTS-21089 Needle Seal (For pH 1-14, for operation up to 130 Price on request CTS-0621 Inlet Check Valve Cartridge Price on request