NTE has a great line of heat shrink tubing. Read more below on how to select and use out NTE brand heat shrink tubing.
In order to get a secure fit for your project, be sure that the tubing’s recovered diameter (the diameter after shrinking) is smaller than the diameter of the area you’re going to insulate. At the same time, the tubing’s expanded state (the diameter before shrinking) needs to be large enough to easily fit over the area to be insulated, as well as any connectors attached to it.
Cut the heat shrink tubing to a usable length, and be sure to allow for a minimum 1/4” overlap over any existing insulation or connectors. Keep in mind that tubing also shrinks lengthwise - typically 5-7% during the shrinking process.
If covering an object, slide the cut tubing over the object that you’re covering; if splicing, slide the tubing over the splice, centering it to allow for equal overlap on both sides.
Before shrinking, check your tubing's specifications for the recommended heating temperature. Any commercial heat gun or heat shrink oven can be used to shrink the tubing. NTE has some great options available in our Heat Guns section. Since uncontrolled heat can cause uneven shrinkage, physical damage and insulation failure, the use of an open flame is really an emergency resort.
Heat Shrink Tubing Brochure
This brochure from NTE Electronics contains information on our Heat Shrink Tubing in a convenient 4-page format. Click here to view/download this document.