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Boat House
Repair two small holes from old transducer
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<blockquote data-quote="El_Guapo" data-source="post: 361345" data-attributes="member: 14055"><p>There are silicones that work well with aluminum, but most don't work so well. A polyurethane based sealant like the 3M 5200 is going to offer superior adhesion in the long run. </p><p></p><p>One of the problems with silicone is that aluminum is such a reactive metal that the chemical released by most RTV silicones (acetic acid) causes almost instantaneous oxidation on the surface. The oxidation layer is going to break free from the parent metal over time, and your leak is right back.</p></blockquote><p></p>
[QUOTE="El_Guapo, post: 361345, member: 14055"] There are silicones that work well with aluminum, but most don't work so well. A polyurethane based sealant like the 3M 5200 is going to offer superior adhesion in the long run. One of the problems with silicone is that aluminum is such a reactive metal that the chemical released by most RTV silicones (acetic acid) causes almost instantaneous oxidation on the surface. The oxidation layer is going to break free from the parent metal over time, and your leak is right back. [/QUOTE]
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Repair two small holes from old transducer
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