Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11094-02 UPLC Primary Check Valve Assy, 2/pk Price on request CTS-11297 Sapphire Plunger Price on request CTS-21163 Rotor Seal, 2-Groove Price on request