Check Valve, Cartridge Back Catalog number: CTS-21480 Availability: In the manufacturer's stock Price on request - + Recommended 11-2587 Piston Seal Wash Seal/Priming Valve Seal Price on request CTS-11119-02 Head Plunger Seal, 2/pk Price on request CTS-A11376 Mixer Assembly, 100μL Price on request