Stovepipe bedding compound
I have my stovepipe, chimney through deck fitting pulled currently. It is an ABI deckmount used with a Dickinson Newport heater/furnace. The fitting gets quite hot and as a result seems to really dry out the bedding compound.
Over the years I have used 3M 4200 and a polysulfide on the second time.Is there a better solution or am I looking at a rebed every few years? I use the heater quite a bit in the dark months of Seattle.
I considered a heat resistant silicone RTV like you might use in an auto engine application.
Any novel ideas?