Plunger Wash Seal Back Catalog number: CTS-10391 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-0620 Outlet Check Valve Cartridge Price on request CTS-12016 Compression Screw, 1/16", SS, 10/pk Price on request CTS-A094 Check Valve Cartridge, 2/pk Price on request