Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-1602 Seal, Polyethylene, High Pressure, Piston Price on request CTS-5531-05 Solvent Bottle Filter, 5/pk Price on request 11-2591 Needle Guide Price on request