Peristaltic Pump Cartridge, WPS/AC Back Catalog number: CTS-21406 Availability: In the manufacturer's stock Price on request - + Recommended CTS-11434 Sapphire Plunger Price on request CTS-21075 Tube Assy, BSM Outlet to SM Price on request 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request