Heat Shrink Tubing Insulation Shrinkable Tubes Assortment Electronic Polyolefin Wire Cable Sleeve Heat Shrink Tubes 127/140/164/328/530PCS

During the production process, heat the heat shrink tubing to a high elasticity state, and then apply a load to the heat shrink tubing to expand it. Under the condition of maintaining expansion, the heat shrink tube rapidly cools into a glass state, which is fixed. When in use, it will return to a high elastic state after heating, but it will retract when the load disappears.