Tony, For what it is worth, I have been running an OEM Automatic fuel
pressure warning switch for two yrs without problem, mostly on Mogas but
with some Avgas. It is fitted with a Viton diaphragm said to be suitable for
gasoline or hydraulic fluid, and it is lifed at 1 million cycles - which I
reckon should be well after supplies of gasoline have run out! Incidentally
it only cost 18 or roughly US$25. Regards, David G-XSDJ
----- Original Message -----
From: Tony Renshaw <tonyrenshaw@optusnet.com.au>
>
> Gidday,
> I have to say that I am getting tired of dealing with the capabilities of
> various seals for both my fuel and brake systems. Whoever comes up with an
> inert, stable seal material for all applications will make millions very
> happy, few quite unhappy, and themselves very rich. I specifically am
> challenged with Viton for fuel systems vs Buna or other materials. I have
a
> recently purchased a SUCO fuel pressure switch, which is actually an oil
> pressure switch. It was sold to me with the assistant highlighting it has
> an internal Viton seal. Well, I took a gamble and bought it, but
subsequent
> to that I have stumbled on something I have read once before on the web
> from a Long Eze pilot back in 1988 who had an engine failure directly
> attributed to the collapse of a viton component within a Facet pump>
Tony Renshaw
> Sydney Australia
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