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Old 12-17-2016, 07:18 PM   #1
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Identify this dripless seal

Can anyone identify the manufacturer of this dripless seal ?
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Old 12-17-2016, 07:26 PM   #2
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Other than color, it sure looks like a PSS shaft seal. Maybe an early version or a Chinese knockoff?

Ted
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Old 12-17-2016, 08:28 PM   #3
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Based on the color it looks like an old Lasdrop or Duramax..

Actually the more I look at it the more it looks like a Duramax.
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Old 12-17-2016, 09:50 PM   #4
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I'm almost sure it's a Lasdrop. Nautical Specialties manufacturer of Lasdrop Shaft-Seals
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Old 12-17-2016, 11:42 PM   #5
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Could it be?


Nautical Specialties manufacturer of Lasdrop Shaft-Seals


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Old 12-18-2016, 04:40 AM   #6
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BP

Looks like a trouble spot, did you flag it?
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Old 12-18-2016, 07:23 AM   #7
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Please tell me you don't need it sent to you in the Bahamas.
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Old 12-18-2016, 07:27 AM   #8
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Quote:
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Please tell me you don't need it sent to you in the Bahamas.
Very funny
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Old 12-18-2016, 07:36 AM   #9
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Thanks guys but i have been through all the websites of the companies mentioned and cannot find anything that looks like this ......

It should be circa 2000 - 2006
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Old 12-18-2016, 08:17 AM   #10
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Maybe this will help. I can't find one with the step in the "one piece plastic" part on any mfg's website.

Colour of bellows seems irrelevant as most mfg's offered different colours at different times.
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Old 12-18-2016, 09:11 AM   #11
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Hi, i thik you seal is old model lasdrop seals?


Drip-Less Shaft Seal Lasdrop Bellows 4 1/2" Shaft, 6 - 6 1/2" Stern Tube, New | eBay


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Old 12-18-2016, 09:15 AM   #12
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Quote:
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Thanks but it does not have the "step" in the plastic disc.
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Old 12-18-2016, 09:28 AM   #13
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Thanks but it does not have the "step" in the plastic disc.
Maybe only certain sizes had the "step" in the plastic disc.
The cooling water hose clamp looks like it has a non-stainless adjusting screw.

You might want to update your blog instead of dealing with stuff like this.
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Old 12-18-2016, 11:08 AM   #14
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Here's a crazy thought, send the picture to a few drop less seal manufacturers and ask them.
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Old 12-18-2016, 11:15 AM   #15
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I've never seen that seal. Sure did not leave much room between shaft coupling and seal!!

Is it leaking? Lasdrop is a face seal so should be pretty long lived and serviceable.

If you have to dig into it can you cut back the shaft tube a bit to give some more room?
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Old 12-18-2016, 11:22 AM   #16
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Ski - I had a small leak and tightened up the bellows which seemed to cure it. I am now into preventative mode. I'd like to identify it so a.) I get mfg's instructions and limits on adjustment etc. and that I am prepared for rebuild if required. I'm not comfortable not knowing what I have. I'd actually prefer a conventional stuffing box as anyone can fix these in water. I can cut back the shaft tube 1/2" or so if I had to.

CapnBill - I have emailed the photo to every mfg. I could think of and as I've found is typical, not one of them has responded.
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Old 12-18-2016, 11:45 AM   #17
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Pretty much anything beyond snugging clamps is going to require a haul and backing out the shaft.

I'd run it as long as it holds up. If it fails, replace it with a packing gland.

Might be a good idea to source a packing gland and keep it on the boat as a spare.

Look at the lengths. Packing gland would be of little use if it is jammed up close to the coupling.

Maybe the clearance issue is why they went with that seal???
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Old 12-18-2016, 11:56 AM   #18
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Could the shaft tube be shortened? That would give you more room to work with.
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Old 12-18-2016, 12:24 PM   #19
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Kmac & Ski - Clearance is very very tight may be able to cut the tube back a little but not much. Tightening a conventional box would be tough.

I'd love to have spares or replacement on hand before I actually need it.
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Old 12-18-2016, 12:36 PM   #20
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Greetings,
Mr. bp. How did this slip by in your extensive rebuild? Is it not considered a maintenance item? Did the vessel originally come with a dripless seal?
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