Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-4180 LPV Rotor, SIL-30AC, SIL-30ACMP Price on request CTS-21129 Check Valve, Ti, Price on request CTS-10475 Sapphire Plunger Kit Price on request