Staperm Thru-Hull Reference Electrodes by GMC

SKU#: GMC STAPERM Permanent Thru-Hull Reference Electrodes
Available in Copper-Copper Sulfate, Zinc-Zinc Sulfate, &Silver-Silver Chloride

Grouped Product items

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  • Description

    The GMC STAPERM™ thru-hull mounting assembly is designed to provide easy installation of special submersible STAPERM™ reference electrodes. Each electrode comes complete with a test lead junction box, electrode sealing system and 3/4" NPT threaded fitting for mounting directly through the structure wall. The electrode can be readily removed and reinstalled from the exterior of the vessel (not under pressure).

  • Specifications  

    • Minimum 20-year service life
    • 1/2" x 6" long Teflon tube mounted in high pressure packing gland 
      with 3/4 NPT.
    • Pressure Rating 350 PSI
    • Stability +/- 5 millivolts with 3.0 microamp load
    • Temperature limit 140°F
  • Models

    Thru Hull Ref Copper

    Copper Copper Sulfate CU-6-TH
    NSF-61 APPROVED


    Thru Hull Ref Zinc

    Zinc Zinc Sulfate ZN-6-TH 


    thru hull ref silver

    Silver Silver Chloride AG-6-TH 

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