Subject: TES o-rings
From: ACRE NL
Date: 12/18/2001, 2:31 PM


I think this is a bit overkill Butch. Hell if we all
had to
do this I don't think anybody would use TES O-rings :-)

I think what we have here is a simple case of the
section diameter
being too large to begin with.

Paul Lamar


Paul, regarding the fact that an oversized seal was used
only aggravated the situation by causing structural
damage, what I'm referring to is that squeezing an
appropriate TFE seal (.099 xsec) into an .067 (lapped)
groove COLD, can cause folds of the Teflon coating,
especially in the thinner areas. There's no two ways
about it, Teflon does move much better when heated.

The reason we are trying to use TFE seals is for
longevity, and the ability to be able to survive an
overheating scenario, which I agree will be a
breakthrough especially for aviation
conversions...............If that's the case, one should
be prepared to pay for it. After all, overkill is a
whole lot better than underkill :-) WHAT'S THE RUSH?

BTW.........I have equipment out there that the TFE
seals are replaced every 6 months, and the procedure I
posted is the one that's STRICTLY followed, with the
exception of a special Hot Box used.
                                         Butch


0.093 xsec.

Paul Lamar
 
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