The two most important dimensions to measure for your application are the largest diameter that the expanded sleeve needs to slide over and the smallest diameter that the tubing needs to completely cover after shrinking. Regardless of whether you’re using heat shrink tubing in an electrical application, as a strain relief, as a protective covering, or for any other reason, determining the correct size is of the utmost importance. The only way to ensure that you’re getting the most appropriate, cost-effective product is to fully understand your application and the requirements that need to be met. The most important aspect of choosing the appropriate heat shrink product for your needs is to understand and define all that is necessary for your application. to identify a component (with printing, a custom color, etc).to change the surface finish of an object.to provide an environmental seal, protecting sensitive components from contaminants such as moisture and chemicals which might cause oxidation and/or corrosion of the components.as a protective covering, safeguarding from:.to bundle loose items (most commonly wires in wire harnesses).to provide electrical insulation (covering terminals, splices, wire repairs, or other connectors).There are a number of useful applications for heat shrink tubing. If the tubing is later exposed to a sufficient amount of heat, it will shrink down to its original size as long as it is not restrained from doing so. The tubing is then cooled to room temperature while in the expanded state. Although the details of this secondary process are proprietary, heat and force are used to expand the diameter of the tubing. The first step involves standard extrusion procedures, after which a secondary process makes the tubing heat-shrinkable. Heat shrink tubing is manufactured using a two-step process. In this section, the basics of heat shrink tubing are discussed. It will serve as a step-by-step guide to assure you that you’re buying the correct product, and it will help you to identify the most cost-effective solution while ensuring that what you buy is going to meet your needs. The following information will help you determine what type of heat shrink product is most appropriate for your application. © Grayline LLC, 2015 Introduction to Heat Shrink Tubing
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