Plunger Seal and Back Up Ring Back Catalog number: 11-4126 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-10984 Sparge Diffuser Price on request 11-2642 Needle Port Seal, AS-100, ASI-100T Price on request CTS-0620 Outlet Check Valve Cartridge Price on request