In the 020507 MMDigest Mark Kinsler was wondering if there happens
to be silicone rubber tubes.  Well, indeed, they exist.  Google at
"silicone rubber tubes", and you'll find quite some sources for them.

If replacing old rubber tubing in an old instrument (and I guess that's
what Mark is aiming at) one could think of using silicone rubber tubes,
disregarding the cost.  The best way, I guess, is using "old-fashioned"
rubber tubes, in order to keep the instrument in its original state as
much as possible.

If not choosing this option alternative tubes can be thought of, and
regarding the cost there possibly is no use for silicone rubber tubes
as a replacement for rubber tubes, since PVC tubes are a lot cheaper,
and will stand up a very long time as well.

And yes, there is silicone rubber cloth, too.

Jan Kijlstra