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Pipe Dope/Thread Seal For Steam

I have the 6" nipples and new Gorton main vents, and I am planning to install them ASAP.

The one question I have left is what thread seal is good on a steam main since the operating temperature is going to be fairly high? I'm guessing something from the teflon family.

I have a tube of Rectorseal T Plus 2, but it's operating temperature is -40°F to 125°F.

The rookie questions just keep coming! If there's a FAQ for dummies I should be looking at instead of pestering you guys, please let me know. Thanks!


  • Mad Dog
    Mad Dog Member Posts: 2,595
    I like Rectorseal #5 and lamp Wick

    That's the yellow one. Rectorseal 2 is fine as well, but I use either wick and dope or teflon tape and dope - best assurance of no leaks, Mad dog

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  • Rudy
    Rudy Member Posts: 482
    da dope

    nothin' but good ole' john crane (pls2) for me. shame they took the lead out though, it was allways great to toss a pint to someone not expecting it to weigh eight pounds.
  • Big Ed
    Big Ed Member Posts: 1,117
    Teflon Tape

    I'am a die hard pipe dope -lamp wick (quick wick) guy. For steam don't use a oil base dope. For a vent I would use teflon tape, this I feel is one place for tape. Stay off the first threads with the tape. You don't want to get some of the teflon hair up in the vent.....
  • Ghostfitter
    Ghostfitter Member Posts: 2

    my #1 choice for steam is Yellow gas tape and masters metallic dope as its good for 600 degrees. another good one is permatex's pipe sealing cord although I dont belive it is appoved yet.
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