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Old 20-07-2014, 05:04   #1
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Green stuff?

I was asked by a client today if this green stuff is from stray currents?

70s timber trawler and the picture is of the stuffing box.

Is this normal corrosion? Is there a solution?


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Old 20-07-2014, 05:39   #2
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Re: Green stuff?

Your attachment link isn't working.
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Old 22-07-2014, 05:57   #3
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Re: Green stuff?

Click image for larger version

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Old 22-07-2014, 05:57   #4
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Re: Green stuff?

Did that work?


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Old 22-07-2014, 06:31   #5
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Re: Green stuff?

Quote:
Originally Posted by gunnado View Post
Did that work?


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Yes, and if that ain't normal, then I'm in trouble, mine is actually more widespread, looks like in your picture it's been cleaned off?
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Old 22-07-2014, 06:36   #6
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Re: Green stuff?

duplicate post
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Old 22-07-2014, 06:38   #7
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Re: Green stuff?

It may have been?? But it's not my yacht.



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Old 27-07-2014, 00:03   #8
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Re: Green stuff?

Quote:
Originally Posted by gunnado View Post
I was asked by a client today if this green stuff is from stray currents?

70s timber trawler and the picture is of the stuffing box.

Is this normal corrosion? Is there a solution?


Attachment 85249


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Brass is made form Zinc & Copper. Copper oxidizes and is accelerated by salt and moisture.

In one sense a "coating" of copper oxide is good - as the corrosion process requires air to continue oxidizing and once a nice coating of oxide is on it in "theory" it stops oxidizing - yup...

I prefer not to have green corrosion on all my stuff and I don't like not knowing what is going on under the oxide especially as the thing keeps the ocean out of the boat.

I would clean it - a mild acidic like vinegar can help.

If you don't seal it - i.e. clear coat paint or paint. It will eventually corrode again. Ultimately over the years until it needs to be replaced.
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Old 27-07-2014, 03:41   #9
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Re: Green stuff?

Thanks


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