In harsh environments stainless steel sheath or Inconel sheath can be used to protect the thermocouple and protect instrumentation signals from electrical interference and reduces Thermocouple Splatter Problems for kiln firings.
Maximum temperature of 1170 Deg C constant or 1300 Deg C intermittently for kiln firings.
Inconel Sheathed Thermocouples
Type K 6MM Sheathed (NON Grounded) with Socket and Flange