Armor for your furnace.After applying 100HT, top coat with 296A, this will create a veneer-like surface that will insulate the inside of your furnace.
Cracked insulation brick. Use the 148 repair kit to fill cracked firebrick with this trowelable product, let it dry, then apply 100HT over it.
Protect Tools. 213 is for metal and graphite applications. Prevents deterioration of your tools.