Seal, Wash Back Catalog number: 11-1603 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended 11-3602 Tubing, Pump Outlet, GP Price on request CTS-21586 1100 Series Essential Pack, G1310A/G1311A Pump Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request