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September 2003

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Subject:
Re: Silicone conformal coating
From:
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Date:
Thu, 4 Sep 2003 22:37:44 EDT
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Steve,
   You are correct that acrylic and urethane have better resistance to
moisture and water vapor than silicone.  Silicone performs well in conditions of
complete submersion in liquid, however.  The main performance reason for choosing
silicone is high temperature operation, where silicone is superior.  For
chemical and acid resistance along with moisture, urethane is my choice.  For ease
of rework and moisture resistance, acrylic can't be beaten.

Jon Moore

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