I'll second the cheap hardware store silicone for
use in electronics. In a TV repair business on the
coast we used large quantities of it to seal TV final
anode caps. Get the NON-acetic type, it's written on the
label and more often used for roof and windows sealing.

We switched from expensive (and corrosive) high voltage
sealant to standard roofing non-acetic sealant, and
provided it cures fully we never had one arc even with
the big sets at 28kv. Actually it didn't arc when wet
either. Btw, prep surfaces by wiping them with tissue
paper and alcohol.
-Roman

Matt Pobursky wrote:
>
> I use GE Silicone II sealant. You can pick up a small 2.8 oz.
> tube of it at home improvement stores like Home Depot or Lowes
> for $3-5 (if memory serves right on the price).
>
> Most hardware stores carry it also. I haven't found any
> difference between it and the more expensive commercial brands
> like Dow, etc. that are specifically recommended for electronics
> assemblies. I've also not found any materials compatibility
> problems either.

> On Wed, 3 Jul 2002 12:24:46 -0400, Josh Koffman wrote:
> >Could you name some brands? I always get confused when I head to
> the
> >hardware store to look for some. Never know what to get.

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