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Brews & Views Bulletin Board Service * Brews and Views Archive 2003 * April 1, 2003 * Silicone Caulk < Previous Next >

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Brandon Dachel (208.44.235.190)
Posted on Tuesday, March 11, 2003 - 06:38 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I'm in the process of designing a RIMS system and I'm wondering about using silicone caulk to seal thermistors inside a probe housing. I've seen plenty of references to doing this but I'm curious if there are any caveats with putting caulk in 150F+ wort.
 

Chris Testerman (199.168.32.10)
Posted on Tuesday, March 11, 2003 - 07:09 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Standard scorched penis joke inserted here:
 

Brandon Dachel (208.44.235.190)
Posted on Tuesday, March 11, 2003 - 07:28 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

> Standard scorched penis joke inserted here:

Huh?
 

Tacoma Brewers (131.191.30.87)
Posted on Tuesday, March 11, 2003 - 07:33 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Maybe he covers his with silcone, and mashes it with the grain? Not the place I'd choose to stick it...much better places to steep your unit in a warm place if that's what you're looking for...
 

Chris Testerman (199.168.32.10)
Posted on Tuesday, March 11, 2003 - 07:40 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

>

I am not very good at spelling. I thought you meant something else. Sorry for the confusion.
 

Bill Pierce (208.57.122.28)
Posted on Tuesday, March 11, 2003 - 07:47 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Jokes aside, food grade silicone sealant is rated to 350 degrees F.
 

Corey Rector (63.145.92.133)
Posted on Tuesday, March 11, 2003 - 10:21 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

What is the difference between food grade silicone and 100% silicone? I assume that the food grade manufacturer paid big bucks for the FDA to approve it's use for food contact and the 100% manufacturer did not. Is that the only difference?

Corey
 

Brandon Dachel (208.44.235.190)
Posted on Wednesday, March 12, 2003 - 01:59 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Ah, but where to get food grade silicone from?
 

Brandon Dachel (208.44.235.190)
Posted on Wednesday, March 12, 2003 - 02:01 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

> I am not very good at spelling.

OK, now that I read my question out loud, I get it...

You must have a very strange pronounciation of the word 'caulk' :)
 

davidw (65.196.221.167)
Posted on Wednesday, March 12, 2003 - 02:55 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Brandon,

You should be able to find it at your local hardware store. Typically it's labled for use around sinks or in the kitchen but double check to make sure it is food grade.
 

Bill Pierce (208.57.122.28)
Posted on Wednesday, March 12, 2003 - 04:25 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

You can also consider aquarium sealant to be food grade. Fish are very sensitive to environmental contaminants.
 

TomK (24.245.54.215)
Posted on Saturday, March 15, 2003 - 12:29 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Don't use silicone bathtub caulk. It has a fungistat in it that isn't safe for human consumption. The aquarium sealant is a much better bet. I worked 35 years at a major silicone manufacturing company so I know the formulations of them.
 

Tacoma Brewers (131.191.30.87)
Posted on Saturday, March 15, 2003 - 01:14 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I got mine from Home Depot. Most of the label was a copper color, IIRC.
 

Tacoma Brewers (12.229.104.252)
Posted on Saturday, March 15, 2003 - 06:46 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Okay, I am home now (sort of), and I can give a better answer than my last post at work. The silicone is made by GE, and is called Silicone II. 100% Silicone Sealant Clear. The top is a goldish copper color, and the bottom is red mostly. On the back, it says for surfaces not to exceed 400F. If you get your Mash that high, you must have a lava mash going on!

It states only that it's for "outstanding performance in Kitchen and Bath applications. It doesn't say anything about food grade, but I've consumed many beers that have passed through that cooler, and I can still walk and talk (and for my gf, other things) so the guy at Home Depot who said it was ideal for this purpose was probably right.

For the record, I used it to seal the Cooler Mash Tun, where the drain hole is.

Hope this helps!

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