There are dozens of Viton parts in the average vehicle, and Viton =
compounds of one form or another have been used for about 40 years, =
meaning that most of your MVs contain such items, especially things like =
O-rings and gaskets.
Improper use of Viton gasket material sounds like one of the more =
dangerous things you could do with it. If you used a Viton gasket in a =
high-temperature application, it might overheat and produce a sticky and =
dangerous hydrofluoric acid residue.
As to whether this means that one shouldn't use any Viton parts, that's =
another question. Viton has some excellent properties that are hard to =
replace with other compounds. It seems reasonable that they should be safe =
if one uses them for what they were designed to do, keeping the hazard =
potential in mind, and taking proper precautions if contamination is =
suspected.
The Viton tip on a carburetor float needle valve would not normally be =
subject to high temperatures unless there is an unusual situation, like an =
engine fire. Anyway, I plan to keep using them. Likewise with other Viton =
parts that are used correctly for their intended applications.
Here is a website that provides a brief description of this hazard.
http://www.ozemail.com.au/~sparrow/viton.htm
Here's another Internet site talking about Viton and similar compounds.
http://www.sisweb.com/vacuum/o-rings/viton.htm
NOTE: I'm NOT endorsing the information at these sites. I just happened to =
find them and thought they might be of interest.
Alan
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