Weather sealant for pc boards

[Stu Lyon]

The problem with the Dow-Corning potting compounds is that most contain
acetic acid which outgasses during the curing process. If it smells like
oranges, don't use it on PC boards. They do make a low outgassing compound
but it is super expensive.

My company came to the conclusion about 30 years ago that the best potting
compound is no potting compound.

73, Stu W6CUX
Winnetka, CA
slyon at pacificnet.net


----- Original Message -----
From: "Multi-Volti Devices (Murray)" <multi-volti at SOFTHOUSE.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Monday, November 12, 2001 8:06 PM
Subject: Re: Weather sealant for pc boards


> Dow Corning has some very cool silicone (no joke) potting compounds that
are
> clear and can be cut with an Xacto knife for servicing, and 'topped off'
> with a 'patch layer' after component repair.
>
> They also have dielectric properties close to Teflon (excellent for RF).
>
> Unfortunately they were frighteningly expensive, at least for what I
wanted.
>
> I can't remember where their web site was either.
>
> They assured me that division was unaffected by the medical implant
> financial issues.
>
> Murray
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
> To post - HEATH at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/HEATH.html
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/HEATH.html