1) What‘s the delivery time of free heat shrink sample?
Within 1 day
2)Is heat shrink tubing flexible
Yes, most of the heat shrink tubes are flexible, especially the small thin wall tube are very flexible, but some medium or heavy wall tubes are semi-rigid.
3)Is heat shrink tubing waterproof
Our adhesive lined heat shrink tubing are waterproof, because these tubes with hot melt adhesive, during heating these tubes, the adhesive will melt and seal the tube and cable, this way, the water or moister can't come into the cable.