Heat shrink tubing is a plastic tube—usually nylon or polyolefin—which shrinks in diameter when a heat source is applied. This creates a snug and secure wrap to the contents within its parameters. This process results in better insulation.
Another added benefit when using heat shrink tubing: abrasion resistance. Such resistance promises to prolong the life of wires and other components so that they work properly. This reduces any unnecessary replacement or repairs.
Finally, heat shrink tubing provides environmental protection. Flight operations expose electrical systems to a whole host of elements and forces that seek to compromise function. But manufacturers have compensated for such erratic (and often unpredictable) conditions by developing many types of heat shrink tubing. Chemical composition offers unique benefits; some allow for better insulation while others promise better fire resistance. A variety of compositions are based on the fact that applications are numerous.
Regardless heat shrink tubing is available for more efficient use and organization of electrical work.