Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended 11-4060 Inlet Check Valve Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request