Plunger Seal, Black Back Catalog number: CTS-7162 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21406 Peristaltic Pump Cartridge, WPS/AC Price on request CTS-0620 Outlet Check Valve Cartridge Price on request CTS-5531-07 Solvent Bottle Filter, 7/pk Price on request