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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #11  
Old 04-06-2009
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No one has suggested 3M 5200 superglue here... for a very good reason.
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Old 04-06-2009
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Quote:
Originally Posted by AjariBonten View Post
One Comment About Butyl Tape in Underwater Applications:

I work with underwater buoys that are deployed as deep as 2000 meters. The main body of these buoys is comprosed of a glass sphere that comes in two parts. The hemispheres are mated, a light vacuum is applied, and we seal the joint (on the outside of the joint) with butyl tape. Standard, off-the-shelf, glaziers butyl tape; and the tape has remained intact, pliable, and removable after as long as two years submerged.

(edit: we then wrap with a layer of Scotch 5200 electrical tape as a mechanical protectant)

While this is not a statement that it is the ideal candidate for Brak's application ; I can state emphatically that it will come out of the water in nearly the same state that it went in. Personally, If I were to do this job I might choose it over 5200 for the ability to remove it without using the nuclear option.
Very good info!!!!!!!!!!
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Old 04-06-2009
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Quote:
Originally Posted by AjariBonten View Post
One Comment About Butyl Tape in Underwater Applications:

I work with underwater buoys that are deployed as deep as 2000 meters. The main body of these buoys is comprosed of a glass sphere that comes in two parts. The hemispheres are mated, a light vacuum is applied, and we seal the joint (on the outside of the joint) with butyl tape. Standard, off-the-shelf, glaziers butyl tape; and the tape has remained intact, pliable, and removable after as long as two years submerged.

(edit: we then wrap with a layer of Scotch 5200 electrical tape as a mechanical protectant)

While this is not a statement that it is the ideal candidate for Brak's application ; I can state emphatically that it will come out of the water in nearly the same state that it went in. Personally, If I were to do this job I might choose it over 5200 for the ability to remove it without using the nuclear option.
Cool Well, that makes me feel pretty darn good about it.

Sounds like a very interesting job btw. What are those buoys for?
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Old 04-06-2009
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Before I heard of butyl being use on boats on this site, use as a submerged sealant..

Quote:
Originally Posted by brak View Post
Cool Well, that makes me feel pretty darn good about it.

Sounds like a very interesting job btw. What are those buoys for?
in refinery waste water plants was my experience. Years under water at all sorts of pH and salt loadings. The only things we watched for were heat (not over ~110F or it will creap) and high hydrocarbon levels in the water. If you enconter either of these limits, you have larger concerns!
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Old 04-06-2009
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OOPS, sorry Sd, looking back I see you suggested 4200, not 5200, my bad.

Maine Sail; thank you I value your praise highly.

Brak:

The buoys are recording devices for marine mammals. We usually deploy them for 3 - 6 months where they record sounds in a pre-0determined frequency range onto hard drives. The data is extracted and analyzed to research whales mostly.

I work on the production and deployment team of the Bioacoustics Research Program at Cornell University. OUr websites are here:

The Science of Sound — Bioacoustics Research Program

Right Whale Listening Network, Cornell, Bioacousti

My job is building/maintaining these recording devices, as well as going into the field to deploy and retrieve them.

Thanks, it IS a cool job.
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Old 04-06-2009
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DUH, I must have 5200 on the brain; the electrical tape we cover the butyl tape is Super-88
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Old 04-06-2009
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I was wondering what the white stuff leaking out of your ears was...
Quote:
Originally Posted by AjariBonten View Post
DUH, I must have 5200 on the brain; the electrical tape we cover the butyl tape is Super-88
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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