Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11095-02 UPLC Check Valve, Double Ball & Seat, 2/pk Price on request CTS-11119-02 Head Plunger Seal, 2/pk Price on request CTS-10322 Ceramic Plunger Price on request