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    fustus20's Avatar
    fustus20 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Sep 22, 2009, 09:19 AM
    Should I use sealers on these threads?
    I had to remove radiators in my home for repairs to walls.. I need to put them back.. I want to know should I use a sealer on the threads or tape or nothing? It is a hot water system
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Sep 22, 2009, 09:20 AM

    Is this copper or steel pipe? I'd use white teflon on copper but for steel use a paste.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #3

    Sep 22, 2009, 11:21 AM
    A agree with ballengerb1 but the pipes are steel/black iron get the good pipe dope paste. Pipe dope paste or teflon tape acts as more of a lubricant than a sealer. This is so the pipe threads can screw into the fitting better and thus prevent the leak. With black iron or steel pipe if you have a leak many times you have to disassemble everything just to fix that leak that is why it is important to use good dope and make sure your joints are tight.
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