I needed something I could use to seal leaks in a diesel generator (an electric generator, not a Coleman part) exhaust pipe. Searching through the hardware store, I ran across this: It is a black gooey material that comes in a plastic tube cartridge. The label says it withstands 1,500 degrees C. It hardens in a few hours to a rigid, non-flexible structure. It worked well on my exhaust. I have a feeling it might come in handy in making unorthodox repairs to stove burners, as it will withstand direct flame temperatures. The one thing I don't know yet is its shelf life. I will find out one day. Yonadav
Have you put a flame to it? After it cures of course. That product may not be available here. Sounds too good to be true. Ken in NC (USA)
At my work they use stuff by the same name, but different company. Hilti makes the stuff we use. Link
It looks like the stuff I've used for stove repairs (as in wood and coal burning stoves ). It is getting hard and brittle when cured, but can withstand high temps (as in "red hot coal burning stove ). It needs enough 'support' or will drop out (it shrinks a little when drying out). Best regards, Wim