While I was in Home Depot, I had called the rectorseal.com 800 number,
and asked what I should use in pool plumbing (800-231-3345).
The guy that answered for technical support didn't really sound all
that knowledgeable, but, he must have known more than I.
He's the one who suggested the red tube you see in the photo.
However, after reading Vic Smith's article, I understand that I don't
want something that lubricates.
I just want sealant.
So, I think *all* the solutions in that picture are wrong.
All I can tell you is that there are a hell of a lot of people using
teflon tape and not having problems. I think the Lasco
article makes sense and a thread sealant is probably
better. But in the grand scheme of things, I'm not sure
it makes a huge difference. To get the high pressure to
crack a fitting, you'd probably have to over tighten the
fitting. If you know what you're doing, that isn't likely to
Here's a source that says sealant is preferred, but if
you have to, you can use tape:
On Sun, 12 May 2013 05:29:15 -0700, email@example.com wrote:
I don't disagree - and - I'm a big believer in doing it any way
you want - BUT - only after knowing the right way to do it -
and not out of sheer ignorance (which was what I was doing).
Since this is alt.home.repair, I agree we should at least
discuss and know HOW to do it right.
At this point, we know that the correct way to do it is not
with Teflon tape, and certainly not with BOTH tape & sealant.
Also we know that the right way is to use a * non-lubricating *
sealant, which is actually hard to find at the big box stores.
This confirms a few things in the Vic Smith article.
- Teflon tape is deprecated
- Teflon tape is a lubricant
- Never use both Teflon tape and sealant paste
- Tighten 2 to 3 turns past finger tight
It looks like huckleberries are in season, as the "right stuff"
is the "Blue 75 thread sealant". I'll see if Home Depot has the
stuff in stock.
Given the wonderful advice in this thread, I ripped out all the
threaded fittings today, and started over - this time with *just*
the PVC sealant+lubricant (and specifically, *no Teflon tape*).
On this second pass, I put only a bead of paste on the threads:
I then tightened the fitting two turns after hand tight:
I also replaced the schedule 40 fitting by putting the sealer on:
I wasn't sure how thick the sealant was supposed to go on though:
As instructed, I then screwed the fitting on only hand tight:
I used a pipe wrench for the last two turns after hand tight:
I would be using channel lock pliers, not a big honking pipe wrench.
No need for anywhere the amount of force you can get with that
wrench. And by using pliers, you have a better feel for the force
being applied, less likely to overtighten, etc. Plus it's easier to
On Mon, 13 May 2013 06:13:51 -0700 (PDT), " firstname.lastname@example.org"
Pipe wrenches have the wrong jaws, too. They're curved, have a moving
jaw, and have teeth, all of which are designed to bite into a round
pipe. None of which is required for unions and certainly isn't wanted
From what I can see, you're putting on way too much sealer on those
threads. I don't think it will do any harm, but unless you're catching
what comes dripping out of that joint as you tighten it, then you're
just wasting the stuff.
I would put a much lighter coat of thread sealant on your male threads.
And, of course, I'd try to be sloppy about it.
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