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Corrosion Prevention- Thru Hulls

Discussion in 'Technical Discussion' started by crackerD, May 19, 2012.

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  1. crackerD, May 19, 2012
    #1
    crackerD

    crackerD Member

    Joined:
    Jul 10, 2010
    Messages:
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    Location:
    Clearwater FL
    I need to go through my bilge and take care of the bronze thru-hulls. Some are developing the nice blue stuff-corrosion. Does Corrosion Block work as a long term preventative? Any recommendations if not?
  2. Capt Bill11, May 20, 2012
    #2
    Capt Bill11

    Capt Bill11 Senior Member

    Joined:
    Feb 27, 2006
    Messages:
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    Location:
    Sarasota/Ft. Lauderdale FL
    Check your bonding, if it's good, just use vinegar and a wire brush on the heaviest corrosion. That green coating that forms on bronze is the metals way of protecting it's self from further corrosion so I wouldn't work to hard to remove it.
  3. C4ENG, May 21, 2012
    #3
    C4ENG

    C4ENG Senior Member

    Joined:
    May 19, 2006
    Messages:
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    Location:
    Ft Lauderdale
    Check for dissimilar metals in your plumbing that are not isolated. If you see corrosion around the threads then I would be kind of concerned and spraying lubricants on it will do next to nothing for you.
    Corrosion Block, great stuff BTW, is not a long term corrosion preventative especially for plumbing. There are other products for that.
    One product (I can not remember the name of) is like a greased cloth that that you wrap around the plumbing fittings and it allows no moisture in. I see it used a lot on jet drive vessels with hydraulic hoses and fittings near the water line.