1100 Series Essential Pack, G1310A/G1311A Pump Back Catalog number: CTS-21586 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21163 Rotor Seal, 2-Groove Price on request CTS-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request CTS-10597 Wash Tube Seal Kit, 4/pk Price on request