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