Does anyone recognize this shaft seal? - SailNet Community
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post #1 of Old 08-25-2012 Thread Starter
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Question Does anyone recognize this shaft seal?

Ah the delights of a 'new' boat......

This mess was described as 'dripless' in the ads. It is actually dripping about twice a second. It is not too obvious how it is tightened. I would have expected to see a nut to the left of the threaded section that would allow you to stabilize it. I'm definitely not happy about torquing the hose section - particularly whilst afloat......

Does anyone recognize this one? How is it tightened?

Thanks a lot,


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post #2 of Old 08-25-2012
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Re: Does anyone recognize this shaft seal?

It's a basic Perko or Buck Algonquin packing gland, not a dripless.

Untighten the thinner nut on the right, then turn the wider nut on the left to compress the internal packing material (likely flax/tallow 1/4" square) until the dripping stops. It should drip when under power. You'll need to hold both nuts to crack them apart, maybe also one of the penetrating chemicals discussed on SN.

BTW - you should open it up again when you layup for the season to check the condition of the packing to avoid an unnessary lift next sailing season. The packing material is cheap, the lift not, as well as the aggrevation.
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post #3 of Old 08-25-2012 Thread Starter
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Re: Does anyone recognize this shaft seal?

Thanks Rugosa for the super-quick response. Guess I just have to add it to the list of sales BS the survey did not catch......

Given that it is supposed to drip under power anyway and I seem to have a good bilge pump and solar is two drips a second (stationary) worth messing with or could I wait for the haul-out? Is this worth upgrading when I do haul?

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It's a basic Perko or Buck Algonquin packing gland, not a dripless.

Untighten the thinner nut on the right, then turn the wider nut on the left to compress the internal packing material (likely flax/tallow 1/4" square) until the dripping stops. It should drip when under power. You'll need to hold both nuts to crack them apart, maybe also one of the penetrating chemicals discussed on SN.

BTW - you should open it up again when you layup for the season to check the condition of the packing to avoid an unnessary lift next sailing season. The packing material is cheap, the lift not, as well as the aggrevation.

Graham and Janaki
Bristol 38.8

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post #4 of Old 08-25-2012
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Re: Does anyone recognize this shaft seal?

Judging from the picture, the hose looks fairly new. If it was my boat, I would check the shaft for excessive wear, re-pack the stuffing box, change out the hose clamps and not worry about it.

Drip-less is the other way to go. It ain't cheap and there are some risks with more parts, little set screws and rubber bellows that you do not have with ye olde stuffing box.

Another thing to consider is where you keep the boat;
If you are on a dock with shore power for the bilge pump and marina staff/neighbors that keep an eye on things then having a bone dry bilge is nice.
If you are on a mooring and a failed rubber bellows or set screw could sink your boat over night with no shore power or anyone to notice, then, you might sleep better with a little drip and less risk.

Funny, my new to me boat has a drip-less and I sort of wish it did not as She's out by her lonesome on a mooring.
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post #5 of Old 08-25-2012
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Re: Does anyone recognize this shaft seal?

Yep, that's Buck Algonquin. Is that a peppermint Lifesaver in the bilge?
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Re: Does anyone recognize this shaft seal?

I'm with RG on this. Tried and true, keep it simple works. If you are confident it is a controlled drip and can live with it until haul out you can do a full inspection then - shaft, hose, clamps, packing material, maybe pull shaft and have it dialed /faced for true. The system you have is simple and proven, easy to owner maintain, limited parts, full unit replacements easy to find. While good alteratives the dripless units cost plenty and you can buy some primo pinos with the money you save BTW, your coupler looks to be turning into a big ball of rust. Include that in your post season inspection.
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Re: Does anyone recognize this shaft seal?

Could be - did not want to touch it.....

The last owner was not exactly fastidious. We found prescription drugs from the original owner still on the boat. Anyway, plenty of projects and she is basically a lovely boat with lots of new stuff so this is all round the edges.

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Yep, that's Buck Algonquin. Is that a peppermint Lifesaver in the bilge?

Graham and Janaki
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Re: Does anyone recognize this shaft seal?

Thanks guys,
Good advice (as always) we are out on a mooring so keep it simple. No idea why they did not replace the coupler with the new engine.....

BTW - what exactly is a 'controlled' drip?

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I'm with RG on this. Tried and true, keep it simple works. If you are confident it is a controlled drip and can live with it until haul out you can do a full inspection then - shaft, hose, clamps, packing material, maybe pull shaft and have it dialed /faced for true. The system you have is simple and proven, easy to owner maintain, limited parts, full unit replacements easy to find. While good alteratives the dripless units cost plenty and you can buy some primo pinos with the money you save BTW, your coupler looks to be turning into a big ball of rust. Include that in your post season inspection.

Graham and Janaki
Bristol 38.8

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post #9 of Old 08-25-2012
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Re: Does anyone recognize this shaft seal?

Looks exactly like mine. Easy to adjust with two small monkey (pipe) wrenches. I replaced the packing in mine with synthetic and it drips maybe every few seconds under power and almost none at rest.
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post #10 of Old 08-25-2012
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I'd tighten it up, you got lots of threads showing and the green stuff growing underneath indicates it's way too wet.

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