Sealing a house radiator at the nut


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Old 12-12-16, 03:56 PM
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Sealing a house radiator at the nut

Despite a fairly tight turn with the wrench, when the heater system runs, there is a slow drip from the nut. I would like to simply seal it with something anaerobic or some sort of epoxy, and one that can withstand hot steam. That's hot.

There are probably dozens of products, I just need one. I don't know if Permatex has something that can withstand the temperature.

I don't want liquid teflon products - I don't think they are the right product.

I've heard of Permatex's, Loctite's, Sydglass, LacoLoc, Vibratite, Basswhite, ..., perhaps one of these companies has something. I would favor a high temperature sealant that hardens like a resin. Do the automotive stores have something?

Naturally, I would prefer something that has low back-wash into the plumbing but I'm not that worried, as long as it dries, it should be ok.

It's ok to recommend more than one product - I assume this is a fairly common problem.

I could turn the nut more and more but I am just being careful. Perhaps that's all it needs, perhaps not.

I want a solution that's not so time-consuming waiting to see if it leaks.
 
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Old 12-12-16, 04:04 PM
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There is no miracle sealant like in "as seen on TV".

You can't seal the nut...... just the ground mating surface.
A little bit of plumbers pipe dope on the mating surface.
 
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Old 12-12-16, 04:16 PM
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I don't know of any products called "plumber's pipe dope". Do hardware stores sell this?
 
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Old 12-12-16, 04:33 PM
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Pipe dope is used by plumbers therefore it is plumber's pipe dope. It's as common as dirt. https://en.wikipedia.org/wiki/Pipe_dope
 
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Old 12-12-16, 05:02 PM
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Everybody, including plumbers, call it "pipe dope," but it's not called that on the bottle. Any hardware store worth its salt should know what you mean by "pipe dope."
 
 

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