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Thread: What type of sealing compound to use for this situation

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  1. #1
    DIY Member Kimster's Avatar
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    Default What type of sealing compound to use for this situation

    Hi all! Still working on the bathroom reno. I have copper stub-outs with sweat-on brass 1/2 in female threaded adapters at the end. I have stainless steel 1/2 in male threaded external shower valve adapters (Grohe) that need to get screwed into the brass. Any special kind of pipe dope I should be using for this situation - stainless to brass? The threaded portion of these adapters will eventually be covered by tile. If you need pictures, I will get some for you.

    Thanks!

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    You do not need anything special to seal that connection - tape and/or pipe dope will work.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Member Kimster's Avatar
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    Thanks, jadnashua! I thought I read somewhere that when you're dealing with stainless on another metal, that the pipe dope had to be anti-galling. Maybe this is true of all pipe-dope? Any brand you particularly like? All the stuff in the box stores here is Oatey, but I can go to the plumbing supply for other stuff if there's better out there.

  4. #4
    Retired Defense Industry Engineer jadnashua's Avatar
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    Stainless on stainless can cause problems...wouldn't expect you'd have problems with this...plus, it's not like you will be installing and removing it regularly!
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    DIY Member Kimster's Avatar
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    Gotcha! Thank you!

  6. #6
    Moderator & Master Plumber hj's Avatar
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    If this is for a surface "shower wall". are you sure they are not chrome plated brass?
    Licensed residential and commercial plumber

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