We have a customer that has a 15 year old, 75 mbh three burner gas furnace. 80% running on propane. The issue is that the furnace's front partition has a hairline crack just above the center burner. The other two openings seem ok. The burners bolt to the front of this panel, and the heat exchanger bolts to the back. The panel is a N.L.A from the manufacturer, and I was posting to see if anyone knows of an extremely high temperature sealant that can be used to temp. patch this to get the furnace through the rest of this winter. The whole system will need to be replaced eventually, I am just trying to get them through the rest of this winter. I think the red RTV will not handle this level of heat. Thanks to all.
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