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Compass Marine How To | all galleries >> Welcome To >> Sealing Deck Penetrations to Prevent Core Rot > Another Illustration
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Another Illustration

Another Illustration

Here you can see how the countersunk hole on the right has forced & compressed the butyl against the bolt and into the threads creating a great seal. The bolt on the left was not countersunk and has very little sealing surface area around the bolts shank or threads.

Nikon D200
1/60s f/5.6 at 70.0mm iso100 full exif

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Dan 20-Sep-2009 14:28
Thank you for getting this posted on line again. I was looking for this a couple of weeks ago, and was glad to come back and find all the text posted. In the interum I couldn't find any other source of a clearly illustrated process to rebed hardware.
Thank You!
Al Cooper 18-Nov-2008 20:42
This all makes a lot of sense ,wish I had read it earlier
Thanks for your excellent article
Al Cooper