On Wed, 28 Mar 2007 10:30:23 -0700, "RST Engineering"
wrote:

Almost all shrink sleeving that I am aware of works on the 50% rule. That
is, it will shrink to 50% of its cold diameter. 4" will shrink to 2".

Go here http://www.mcmaster.com/, and start at catalogue page 777.
Shrink ratios up to 6:1, colors, clear, thick-wall, wrap-around etc.
Same-day shipping. But that high shrink-rate stuff is pricey.

Wayne