Description
With a 3:1 shrink ratio, the inner diameter of the heat shrink tube can shrink to 1/3 of its original diameter after heating. It is more flexible to adapt to various sizes of products than the 2:1 shrink ratio..The inner wall of an industrial-grade double-wall heat-shrinkable tube is a layer of hot melt glue, which melts into a thick layer of glue when heated, sealing the acceptor well and preventing water, dust and oil..Our marine grade shrink tube are UL and CSA certified, RoHS compliant, free of formaldehyde (HCHO), heavy metals and other harmful substances. Even long-term exposure to your environment will not affect your health or that of your family..Our heat-shrink tubing has the advantages of good electrical insulation, good sealing, corrosion resistance and high temperature resistance. Anti-aging, tough, not easy to break..Please note that 1/2 inch heat shrinkable tube refers to the diameter of the heat shrinkable tube before shrinkage（ Dimensions of heat shrink tubes after flattening= π* (1/2)"/2=0.785"）
