factory direct supply 328pcs color heat shrink tube boxed colorful suit 560pcs combination

                                                                               Hot shrink tube box set

1.Hot shrink tube is a type of high-performance polymer insulation and protective material that contracts evenly along the diameter when heated, tightly enveloping cables or connectors.The core function is to provideInsulation protection, mechanical protection, water-proof sealing, fire-retardant and flame-retardant, and identification.The working principle is based on 'radiation cross-linking + memory effect': first, the pipe material is heated and expanded to form a shape, and then it maintains the expanded state after cooling; when in use, it responds to heat (usually 80–120°C), with the molecular chains contracting to restore to their original size, thereby achieving a tight and covering.Widely applied in fields such as equipment, automotive wiring harnesses, equipment, power systems, and consumer electronics。