>On Fri, 14 Feb 1997 [log in to unmask] wrote:
>
> I use teflon tape on all the
>> connectors to stop those pesky leaks.
>
>I'm way out of my field here, but I seem to recall a physics technician
>warning me that teflon tape is *not* appropriate for compressed gas
>systems.  Teflon seals water leaks, but can foul the threads in a gas
>system.  Lead washers are the preferred gaskets for use with compressed
>gas ('though if I were having to *breathe* it, I'd rather be breathing
>teflon than lead!)
>
I don't know but I have seen an awful lot of people, including myself,
using teflon tape for air lines and CO2 tanks.  It works just fine, but of
course nobody is breathing it.

-Clara

Clara R. Simpson
Zology Illustrator
Field Museum