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Old 07-15-2013, 05:09 AM   #1
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Is this the correct sealant for black gas pipe?


Been remodeling my entire house and we replaced all the plumbing (among many other things).

We're at the point, where the gas stove is being installed and my installer (whom I hired) noticed that the plumber (hired by my GC) used this blue sealant (see pic). He said that sealant is only used for PVC pipes (irrigation, etc.) not for black pipe and it's against code.

He said for black pipes, "yellow mustard" or pipe dope is required (see pic of the can he brought).

Now that got me worried that the plumber used this blue sealant throughout all the black gas pipes so I checked. Yep, he did (see 3rd pic).

Is this against code? DO I have to worry about premature leakage? I'm thinking of hiring my own licensed plumber to do an inspection as there have been many problems with the GC during this project.
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Old 07-15-2013, 05:18 AM   #2
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Is this the correct sealant for black gas pipe?


http://www.rectorseal.com/index.php/rectorseal-no-5/

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Old 07-15-2013, 08:37 AM   #3
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Is this the correct sealant for black gas pipe?


I know what the rectorseal #5 is., I bought some yesterday to use.

I'll rephrase my question better: is it against code to use the blue (PVC) sealant for black gas pipes? Will this result in early failure of the pipes - leakage?

Thanks.
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Old 07-15-2013, 09:05 AM   #4
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Is this the correct sealant for black gas pipe?


The only way to know for sure is to read the labels on the can.
Sure Rector Seal is fine, but so are several other products.
The blue is probably Blue Magic- you might find your answer on line too.
Seems like there are very few pipe dope that aren't allowed on gas these days
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Old 07-15-2013, 01:37 PM   #5
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Is this the correct sealant for black gas pipe?


removed comment after researching

Last edited by old_squid; 07-15-2013 at 01:46 PM.
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Old 07-15-2013, 01:50 PM   #6
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Is this the correct sealant for black gas pipe?


Quote:
Originally Posted by old_squid View Post
removed comment after researching
galvanized is ok but according to my gas code, it needs to be labeled as gas if it is more than 2 ft long
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Old 07-15-2013, 02:18 PM   #7
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Is this the correct sealant for black gas pipe?


Quote:
Originally Posted by TheEplumber View Post
The only way to know for sure is to read the labels on the can.
Sure Rector Seal is fine, but so are several other products.
The blue is probably Blue Magic- you might find your answer on line too.
Seems like there are very few pipe dope that aren't allowed on gas these days
Thanks.

I believe this is the sealant he used: http://www.jcwhitlam.com/pdf/IG-SPEC.pdf
I asked my GC to take a picture of the can.

The specs do say it's OK for Natural Gas but doesn't say steel pipes explicitly, only the following: ABS, PVC, CPVC, Delrin*, Zytel*, Fiberglass, Nylon, Polypropylene, Polybutylene, Polyethylene, Celcon**,Cycolac***, and all types of metal.

Is steel considered metal?
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Old 07-15-2013, 02:22 PM   #8
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Is this the correct sealant for black gas pipe?


Yes, it's considered metal

The key is that it is ok for gas- not so much the pipe material
Gas will break down some pipe sealants- some sealants will breakdown plastics
You appear good to go in both cases

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Old 07-15-2013, 02:42 PM   #9
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Is this the correct sealant for black gas pipe?


Sealants come in all types of colors so the color doesn't matter. What does matter is if the sealant is approved for the application it is being used on. If it is approved for natural gas and LP gas uses as well as all metals then it is fine. A simple call to the plumber to ask what brand of sealant he used will answer any and all questions you or your contractor may have.

Here is a link for you so you can see the different colors and uses:

http://www.grainger.com/Grainger/pip.../N-85hZ1z0q1yr

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