Masking answer to silicone tubing….Powder-Sleeve. It
is an ultra hi-temp fiberglass cloth sleeve with a clear silicone
coating. Unlike silicone tubing Powder-Sleeve can slide over
longer shafts with ease and not adhering to the surface. By
far the easiest way to mask longer shafts without the problems of
a silicone tubing. We also have a Super-Stretch Sleeve, which
has a 1:2 ratio.