🚀 go-pugleaf

In article <1992Nov10.143513.14412@athena.mit.edu> jory@athena.mit.edu (Jory Bell) writes:
>as usual, i have a slightly weird interdisciplinary
>question...
> 
>in a nut shell, i am looking for a non-conductive, low
>viscosity, teflon-compatible fluid which i can put in an
>oceanographic instrument with some electronics (IC's,
>motor, and batteries) as a pressure compensating fluid!
> 
>some net folk may be familiar with fluorinert (FC-77), a 3M
>chemical used for electronics testing (heat cycles,
>etc?)... well i have been using this as a pressure
>compensating fluid, but it is "incompatible" with teflon
>(it makes it expan from 3%-7%), and it is keeping me from
>using a certain teflon shaft seal that i have me heart set
>on...
> 
How about DOT-5 automotive brake fluid??? It's pretty low viscosity over a
wide range of temperatures and doesn't harm teflon parts inside brake systems.
Since it's silicone based, I doubt that it has any substantial amount of
electrical conductance either. It's also non-hydroscopic and reportedly will
not dissolve paint like the glycol based brake fluids. It's probably also got
some semi-decent lubricating properties for your electric motor too.

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Neal Howard   '91 XLH-1200      DoD #686      CompuTrac, Inc (Richardson, TX)
     "To do is to be." - Socrates      "To be is to do." - Aristotle
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