The function of quick threading heat shrink tubing onto pigtails
You install them with a heat gun that shrinks the tubing, melts the solder to effect a connection between shield and the pigtail, and melts the sealant material to close off both ends of the sleeve. These are a high temperature heat-shrink tubing with a ring of sealant (the blue bands at each end of the sleeve) and a ring of solder in the middle (the silver band). Similarly, proper investment in heat shrink tubing and components to fortify any electrical infrastructure can help to reduce the total cost of ownership through improved lifecycle cost savings, reduced maintenance needs and lower failure rates. Heat-shrink tubing (or, commonly, heat shrink or heatshrink) is a shrinkable plastic tube used to insulate wires, providing abrasion resistance and environmental protection for stranded and solid wire conductors, connections, joints and terminals in electrical wiring.
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