Hercules Furnace Cement, 1 pt, Tan 35504

Container indicated was for high temperature use, and listed kilns as place it could be used. I used it to patch some broken kiln bricks in the lid of my electric kiln. I followed the instructions, did a low heat first, and cement bubbled up, curled, pulling pieces of kiln soft brick with it, fired it a little higher and the stuff flaked off. Absolutely no good for the purpose listed on the container. I'm going to have to replace the kiln lid at a cost of $215. This stuff did more damage to the lid than was originally there.