DIY How to Repair Cracked Fireplace Brick

Spring cleaning is done and now we are making a couple of repairs to our current house.  The fireplace stone that is in the bottom of the fireplace has a crack that requires a silicate high heat furnace cement to repair it.   It took some calling around to find a supplier. Fortunately we are suburb dwellers and only had to drive about 15 miles to find it at Turner's Hardware.  The container we purchased seals metal to metal or cement to metal, stops smoke or gas leaks and withstands temps up to 2000 degrees.  THAT IS HOT!