Silicone vs stove cement
- tcalo
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I was wondering if anyone has used high temp silicone in place of furnace cement when assembling a stove? I believe Scott touched on this subject relating to the build of his PP Stewart. Is there an advantage of one over the other? It seems that a high temp silicone in a tube would be much easier to use. I'm not sure of the temp ratings, maybe they won't hold up to the heat in some areas?
- Lightning
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I haven't seen a silicone that could stand more than 600 degrees, but maybe I'm looking in the wrong places. Furnace cement is good up to 1200.
- hotblast1357
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I used a tube type product when assembling my boiler, I will look tonight to see what it is called, it’s not really a silicone as it has fibers in the material, seems good so far, and I know the rating is over 1,000 degrees.
- Sunny Boy
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tcalo wrote: ↑Mon. Oct. 16, 2017 9:29 pmI was wondering if anyone has used high temp silicone in place of furnace cement when assembling a stove? I believe Scott touched on this subject relating to the build of his PP Stewart. Is there an advantage of one over the other? It seems that a high temp silicone in a tube would be much easier to use. I'm not sure of the temp ratings, maybe they won't hold up to the heat in some areas?
Tom,
Yes, Scott posted a link to a very high temp silicone sealer. It was the first I'd read about any rated over the usual 600F of other high temp silicones. If I remember, it was rated over 1000F. I'll see if I can find the link, if Scott doesn't repost it before then.
BTW, the Hercules furnace cement, that some of the stove restorers use, does come in a calking gun tube, so it can be put on with less mess, like silicone in a tube.
Paul
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I have successfully used high-temp silicone in areas that don't get above 600 degrees.
However, I used it around the flue collar and it did not hold up.
However, I used it around the flue collar and it did not hold up.
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Tommy, this is what I had Skip assemble the base of the Stewart with. However, it has to be fired within 30 days of application. So he put the entire base in one of his ovens after assembly
http://www.deaconindustries.com/product-display/d ... -8875-thin
The rest of the stove is assembled with plain old Rutland cement....
http://www.deaconindustries.com/product-display/d ... -8875-thin
The rest of the stove is assembled with plain old Rutland cement....
- hotblast1357
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This is what I used, when assembling my boiler.
Attachments
- Sunny Boy
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Scott, somewhere in your posts, didn't you also list some silicone sealers that were rated higher than 600F ? Or did I dream that ?
Paul
Paul
- lsayre
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Permatex Red High Temperature RTV Silicone adhesive is good up to 650 degrees.
https://www.permatex.com/products/gasketing/gaske ... ne-gasket/
https://www.permatex.com/products/gasketing/gaske ... ne-gasket/
- coaledsweat
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Please keep in mind that silicone temp limits are "intermittent" rated and for that reason probably not the best thing to use in a coal fired application.
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This would work on a base assembly I guess...
https://www.superior-industries.com/seal_and_assi ... t_242.html
Paul,
I looked over my Stewart thread and can't find anything
https://www.superior-industries.com/seal_and_assi ... t_242.html
Paul,
I looked over my Stewart thread and can't find anything
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non melting and odorless, that's one i'd try.
i tried one from Deacon when i first put T.O.M. into service, it ran and stank. i shut the stove down just to get it all out and off it then used heavy felt type tape from ACE sold for sealing Big Green Egg grills.
i love that stuff, it seals everything that is fitted to the barrel on TOM now.
it will not work for fitted cast joints like ash chambers, base chambers, lids to barrel, firpot supports, barrel to ash chamber, that type of thing.
i tried one from Deacon when i first put T.O.M. into service, it ran and stank. i shut the stove down just to get it all out and off it then used heavy felt type tape from ACE sold for sealing Big Green Egg grills.
i love that stuff, it seals everything that is fitted to the barrel on TOM now.
it will not work for fitted cast joints like ash chambers, base chambers, lids to barrel, firpot supports, barrel to ash chamber, that type of thing.
- Sunny Boy
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Thanks for looking Scott. Guess I did dream it.scalabro wrote: ↑Wed. Oct. 18, 2017 6:55 pmThis would work on a base assembly I guess...
https://www.superior-industries.com/seal_and_assi ... t_242.html
Paul,
I looked over my Stewart thread and can't find anything
I can't find any rated over 600F with an internet search. I've used the red 600F on the plenum and stove pipe joints of an oil-fired furnace I had in my last shop. Almost made it through the first winter before it got cooked and leaked.
Paul