High heat sealant

[Lumpy Coal]

Has anyone here used high heat sealant such as fireplace sealant on a smoker or kettle mod?  Is it safe to cook with after it cures?

[MacEggs]

I have when I did mods to a Brinkmann smoker. 

It worked okay, but I ended up replacing it with RTV sealant, as it has better water resistant properties.  After it cures, it's fine.

http://www.permatex.com/products-2/product-categories/adhesives-sealants/sealants

[Lumpy Coal]

Perfect, thanks.

[Smokin Seymour]

Iv'e used the following on drum smoker, all worked well;

Permatex Ultra Copper

Rutland High Heat RTV

JB Weld High Heat Epoxy

[dwnthehatch]

I use this: http://www.amazon.com/Permatex-81160-Form-A-Gasket-Silicone-Sealant/dp/B000FW2NB2 on my smoker.  They claim it's food safe.

From Permatex:

Permatex has a High Temp. RED RTV Silicone Gasket Maker and is safe to
use around food products .It is certified
NSF/ANSI STANDARD 51 Food Equipment Materials ...( indirectly around
food )Temp. max. is 600 F continuous and 650 F intermittently ... The
Ultra Copper is not NSF

If you have further questions feel free to call Tech. Service at
toll-free @ 877.376-2839)

[Tommy B]

When I built/painted my mini WSM I used high heat engine paint. I painted my design and then they made a high heat sealer. I bought all the paint/sealant from Autozone. I obviously didn't paint the inside of the cooker but have had no troubles.