Revitex VSC99 RW
Sleeving made of a special silicone
rubber coated fiberglass braid.
[...]
Expandable braided fiberglass
sleeving impregnated with
silicone varnish. Its special form
for braiding, allows increasing the
inside diameter of the sleeving
considerably, the sleeving of the
same time contracting in length
Fiberglass and silicone