On Tue, 9 Jul 2002 [EMAIL PROTECTED] wrote:
> I've also noted that Swagelok ball valves state that the standard
> seat material is 'reinforced TFE', with 'virgin TFE' as an optional
> material with a lower pressure rating. The questions is: What is that
> reinforcing material and it that the problem?
It's common to reinforce Teflon with glass fibers, to give it more
mechanical strength in general and help it stay put in particular. That
ought not to be an issue. (I think I'd ask for confirmation about the
nature of the reinforcing material if I was going to bet lots of money
on it, however.)
Henry Spencer
[EMAIL PROTECTED]
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