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Staperm Thru-Hull Reference Electrodes by GMC

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).

Created by: Pipeline Corrosion Control

Last updated 01/2026

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Description

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 Copper Copper Sulfate CU-6-THNSF-61 APPROVED Zinc Zinc Sulfate ZN-6-TH  Silver Silver Chloride AG-6-TH 
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£ 799.00 £ 999.00 20% off
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