Mineral Insulated Cable, from dia 0.25mm to 12.7mm.sheath ... as high temperature furnace thermocouples. Mineral insulated cable for thermocouple use: Measure range: K, E, J, T, N, Outer dia.: ... Simplex, Duplex, TriplexSample1 MI thermocouple with J extension wireMI cable for RTD use:Conductor: Ni,CuOuter dia.: 2~8mm Sheath ... Duplex, TriplexSample 2 MI RTD with connector Mineral Insulated Cable