Perforated shrink tubing has many different uses.
It can be used when you require a seal that cannot be broken without any visible signs or as another type of sealant.
Shrink tubing which is perforated can also be wound onto spools so that one can tear the desired length off and avoid having to cut the sleeve itself. This is also a good way to keep it stored.
The shrinkable sleeve functions exactly as normal shrink tubing, but is perforated either across or on the length of the shrinkable sleeve. The machining hole that makes the perforation is specially developed so that we can “steer” the direction, as desired.