Page 1 of 2

Pipe thread sealant?

Posted: Mon Apr 01, 2019 12:11 pm
by DianneB
What do ya'll use for "pipe dope" on model size threaded steam pipes?

I used to use "Master's Metallic" compound on everything from full-size steam to models and it work 100% but it is hard to find now. I have tried all kinds of thread sealing products from many different outlets and they don't work worth road apples! :x The only thing I have that usually works is gasket shellac .....

Re: Pipe thread sealant?

Posted: Mon Apr 01, 2019 7:08 pm
by Tim B Guenther
Locktite 510 Flange sealant. I use it in place of gaskets and for the threads on small steam fittings.

Re: Pipe thread sealant?

Posted: Mon Apr 01, 2019 8:30 pm
by Greg_Lewis
There have been threads on this here. Do a search and you'll come up with many suggestions.

Re: Pipe thread sealant?

Posted: Mon Apr 01, 2019 9:30 pm
by Soot n' Cinders
I use regular engine anti seize. Seals up nicely plus makes things easy to remove later on.

Re: Pipe thread sealant?

Posted: Mon Apr 01, 2019 9:49 pm
by BigDumbDinosaur
DianneB wrote:
Mon Apr 01, 2019 12:11 pm
What do ya'll use for "pipe dope" on model size threaded steam pipes?

I used to use "Master's Metallic" compound on everything from full-size steam to models and it work 100% but it is hard to find now. I have tried all kinds of thread sealing products from many different outlets and they don't work worth road apples! :x The only thing I have that usually works is gasket shellac .....
Oatey Teflon pipe sealant works well. If you use it be sure to thoroughly de-grease the mating parts.

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 6:18 am
by Mike Walsh
I use 1/4" wide Teflon tape from McMaster Carr. Easier than putzing around with your 30c rolls of Teflon tape from the hardware store.

I always double check my fittings to ensure nothing gets inside a valve body, etc. and always keep the tape one thread shy of the end of the fitting. I think this helps keep the tape from getting inside whatever you're working on.

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 7:13 am
by cbrew
just off the shelf red thread locker. works good and never had an issue with disassembly

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 8:03 am
by steamingdon
Permatex High Tack ( Red stuff) good on toast also. Any good auto parts store will carry it. :D

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 8:15 am
by FLtenwheeler
I use Loctite 565 thread sealant.

Loctite 565 Controlled Strength Thread Sealant is formulated specifically for metal, tapered pipe thread fittings.

Tim

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 8:38 am
by John Hasler
And that's the problem with Loctite products: there are hundreds of them, each with a very specific purpose. Wonderful for manufacturing, but which ones should I stock in my home shop?

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 9:02 am
by FLtenwheeler
John Hasler wrote:
Tue Apr 02, 2019 8:38 am
And that's the problem with Loctite products: there are hundreds of them, each with a very specific purpose. Wonderful for manufacturing, but which ones should I stock in my home shop?
Hi John

I has at least 10 Loctite products I try to keep around the shop. But most people can get by with 3 or 4. It depends on what you are doing.

Tim

Re: Pipe thread sealant?

Posted: Tue Apr 02, 2019 10:31 am
by mattmason
Blue threadlocker Loctitie or Permex. Easy to disassemble, easy to clean off during maintenance, always available on the road, won't break off like tape. Just one of the many methods you could use.