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1. 06:19 AM - Re: AeroElectric-List Digest: 3 Msgs - 10/17/08 (glen matejcek)
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| Subject: | RE: AeroElectric-List Digest: 3 Msgs - 10/17/08 |
Hi Ken et al-
The product I used, DAP Blockade, is an intumescent caulk, as I had noted
in my original post. ACS wants $18.95 a tube for theirs, plus shipping and
handling. I can't tell you what I paid locally anymore, but it was less
than $10. A quick look on the 'net revealed multiple sources for various
brands costing $7.70 to $10.70 per tube. There was one company offering
case lots as low as $2 / tube.
While it is absolutely true that you can get what you pay for, and we need
to be careful about quality issues, there is also always someone willing to
charge us a premium for the word 'aviation'.
FWIW-
glen matejcek
aerobubba@earthlink.net
> Subject: Re: AeroElectric-List: Fire-Putty/ Sealant
>
>
> I'd caution that most fire rated caulks from the hardware store are
> essentially just silicone that have a fire rating to satisfy a
> particular building code. The one I tested was no better than red rtv
> gasket compound. While either will satisfy our local inspectors, the
> silicone products are not near as good as the itumescent 3M product.
> Less than 600*F vs. 2000*F. Aluminum melts around 1100*F as I recall.
>
> Occasionally you do get what you pay for.
>
> Ken
>
>
> glen matejcek wrote:
> >
> > Hi Jay-
> >
> > Up over here, on the northwest side of the planet ;-), these products
can
> > be had at many hardware outlets aside from home depot. They are
> > intumescent caulks, and come in a cartridge suitable for use in a
standard
> > home use caulking gun. They are typically displayed in the same area as
> > all the other window and siding caulks, being marketed as 'fire block',
> > 'fire stop', or some such. When packaged as home repair materials they
are
> > a fraction of the cost of when the same material is packaged for
aviation
> > use.
>
>
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