Pipe dope

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Tony Conner_2
Tony Conner_2 Posts: 443
in THE MAIN WALL
...easy to spell incorrectly. There's no "E". Try www.xpando.com

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  • Wirenut
    Wirenut Posts: 9
    Pipe Dope

    What is a good leak free pipe sealant to use on copper male adapters screwing into a cast iron boiler?
  • bob young
    bob young Posts: 2,177
    PERMATEX

  • kevin coppinger_4
    kevin coppinger_4 Posts: 2,124
    I am a big fan....

    of teflon tape and whitlam blue magic. Permatex is ok but gosh its messy. Thats why I call it permanent-tex...you get it on you, its permanent. kpc

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  • JB_8
    JB_8 Posts: 85
    sealant

    Megaloc
  • Unknown
    Unknown
    Not approved but,,,

    I've been using GE 100% silicone for all things hydronic for over five years now over a 3-wrap of teflon tape. So far - so good. I really like the way things fit-up with this method. (not for gas!)

    Rectorseal #5 is the old standby and it's never let me down but, it's hard to get off hands & pants. Think Dan has a section to the left that talks about pipe sealant.

    Wallace Radiant Design

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  • Unknown
    Unknown
    I like the Permatex too

    on fittings you know you never need to take apart again .

    For everything else it's 2 or 3 wraps of Teflon on the first couple of threads , then Rectorseal #5 over the Teflon . I also throw some sealant on the inner threads of everything above 1 inch - better to be safe than sorry .

  • Al Corelli
    Al Corelli Posts: 454


    We don't usually put male adapters directly into a boiler.

    Teflon and Rectorseal. Exactly as Ron Jr. does.

    We keep Permatex on hand just in case, but rarely have to use it.

    Leak lock on oil line fittings from tank to burner.
    Rectorseal Number 2 for oil fill and vent.

    I want to try the Loctite 55 string, and Expando. Can't find Expando anywhere. Does someone want to send me a can?
    I have money. Green money.
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