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Alumina Protection Tube

Key Features

  • 99.5% Pure Alumina to use with Noble metal thermocouples.
  • Size available from 1/4″ to 1.0″
  • Process connection available from 1/4″ NPT to 1.5″ NPT with Carbon Steel bushing and Stainless steel bushing.
  • Can be ordered with or without process connection bushing.


Alumina (Aluminum Oxide) protection tubes have fair resistance to thermal shock and mechanical shock. They are impervious to gasses upto 3200 F.

Primary application are metal industry, heat treat furnaces, forging  and bright annealing. Suitable to use in glass and ceramic industries. Semi-Conductor manufacturing and research laboratories.