White powder around stuffing box. - SailNet Community
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post #1 of 12 Old 07-26-2013 Thread Starter
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White powder around stuffing box.

Just discovered this ring of white powder around the stuffing box. Never noticed it before. Very fine, I'm guessing salt (I didn't taste it).
Shots are not great, but should give you the picture.
Thoughts?
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post #2 of 12 Old 07-26-2013
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Re: White powder around stuffing box.

how are your zincs?
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post #3 of 12 Old 07-27-2013 Thread Starter
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Re: White powder around stuffing box.

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how are your zincs?
Zincs were fine a month ago. What would the powder be if they were not?
Going to fire it up today and make sure the adjustment is correct. Hope it's not generating too much heat.
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post #4 of 12 Old 07-27-2013
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Re: White powder around stuffing box.

I think Weinie is thinking electrolysis, like you get powder buildup sometimes on your battery terminals on a car.
I'd guess that salt is fairly likely, unless your boat is in the Great Lakes.

With the fancy Gore GFO and GTU packings I've noticed a dark gray liquid spinning off my shaft right at the stuffing box where the drip comes out. What is a little weird is that your ring of white powder is between the stuffing box and shaft log hose and not where the shaft enters the stuffing box. Where your white ring is there should be no water getting out from the two hose clamps.

I'm going to guess that your white ring is some compound that was applied (long ago) which has now turned into a powder. Perhaps a white lithium grease? used to make it easier to fit the hose over the stuffing box hose barb.
If this is the case then I don't think it is anything to worry about.

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post #5 of 12 Old 07-27-2013
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Re: White powder around stuffing box.

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...electrolysis, like you get powder buildup sometimes on your battery terminals on a car.
Bingo.
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post #6 of 12 Old 07-27-2013
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Re: White powder around stuffing box.

'just to gain a little more knowledge, you can collect a sample of the white powder on a shallow glass and place a drop of water on the power, then stir with a toothpick. If it's a salt, then it will quickly dissolve.


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post #7 of 12 Old 07-27-2013
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Re: White powder around stuffing box.

Perhaps someone is attempting to smuggle substances aboard your boat when you aren't there?

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post #8 of 12 Old 08-03-2013 Thread Starter
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Re: White powder around stuffing box.

As a result of this thread Pink metal on stuffing box, I bonded the stuffing box to DC ground about a year ago. Wonder if there might be a connection?
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post #9 of 12 Old 08-03-2013 Thread Starter
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Re: White powder around stuffing box.

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Perhaps someone is attempting to smuggle substances aboard your boat when you aren't there?
Or maybe the boats producing it! A pleasure boat that MAKES money...now that's a first!
I wish!
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post #10 of 12 Old 08-09-2013 Thread Starter
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Re: White powder around stuffing box.

Just checked the stuffing box. No powder so far I'll keep an eye on it.
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