Heat shrinkable tubing with medium wall with resin or mastic, from Ø2 to 530 mm, length 1 or 1.22 m

We have to heat the tubing with an air gun warm until it tightens and the internal adhesive begins to melt.

The medium-wall heat shrink tubing has a thickness greater than thin-wall heat shrink tubing, therefore, at the equal power of the means of heating, heating plastic thickness takes longer. With a hot air gun a power of 1600 watts, retract a tubing to medium wall an initial thickness of 0.9 mm will take twice as long as retracting a thin-wall heat shrink tubing with an initial thickness of 0.45 mm. Therefore, if you use hot air gun even more powerful, you will retract faster, as you will heat faster the plastic thickness.

Yes, medium-wall heat shrink tubing with adhesive is UV resistant, so it can be used outdoors. Black versions generally offer better sun-ray hold. Black pigments absorb and dissipate UV rays better, slowing down the aging of the material. They retain their flexibility and colour longer. For a durable installation, it is important to check the UV specification.

It is not possible to enlarge this type of tubing Once retracted. The adhesive presence makes the operation even more definitive. If you can't put on the tubing, you have to choose a tubing larger in diameter before laying. After laying, if you find that the thickness is insufficient and you cannot reach the minimum restricted diameter, you must choose a tubing even larger in diameter before laying, as the thickness increases at the same time as the diameter decreases.

Collage is done automatically when retracting : Adhesive heats, melts and spreads around the cable. To ensure perfect adhesion, heat must be applied uniformly in order to have a higher probability that any adhesive has melted.

The adhesive then fills the spaces, ensures sealing, and contributes to mechanical resistance. Uniform heating is essential to avoid unglued areas. Indeed, if there are unheated areas, then internal adhesive did not melt, and there is no leak. We need to heat the tubing with method. The presence of leaks or the absence of leaks indicates that there are areas of tubing which have not been heated. So you can try to repair by heating again and uniformly the whole of the tubing so as to melt the glued areas that were not melted initially.