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    capybaras's Avatar
    capybaras Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Nov 20, 2009, 01:30 PM
    Replaced cast iron waste with PVC.need to caulk?
    My connections from cast iron to PVC are made using no-hub couplings. They seem like a good seal, but should I add some caulking (flexible, waterproof, etc) just in case? Or not worth it?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Nov 20, 2009, 02:44 PM
    Hi Capy...

    If you had a clean, tight connection at the no-hub clamp then you should not need to use any "flexible caulking".

    MARK
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