Plunger Seal Back Catalog number: CTS-10693 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-11119-02 Head Plunger Seal, 2/pk Price on request CTS-21183 Peristaltic Pump Price on request CTS-21243 1/16'' Ferrule set, 2/pk Price on request