Do You Have To Be a Professional To Use Heat Shrink Tubing?

Plenty of things in the electronic world are more complicated than they sound. Rest assured, heat shrink tubing isn’t one of them. Also known as electrical shrink tubing, the phenomenon entails a few simple steps to get the job done.

A heat shrink tube is used within electrical appliances to provide insulation. It coats sensitive elements such as wires and protects them from dust, moisture, sharp scratches as well as other types of abrasive materials. Essentially, heat shrink tubing prevents short circuits and electrical failures caused by loose wires, disjointed connections, damaged terminals, and more.

Heat Shrink Tubing 101

True to its name, heat shrink tubing is the process of melting a thermoplastic tube to the extent where it tightly coats electrical components. When exposed to high temperatures, the thermoplastic contours the crevices of small equipment pieces.

The process starts with creating an extrusion, in other words, a tube. Manufacturers use a variety of different materials for heat shrink tubing, and this depends on the purpose behind the application. Once the desired length is successfully extruded, a flame is brought closer to the tube’s surface. As the material heats, it expands and covers more area. When the tube expands enough, it is allowed to cool down at room temperature. One would think this is where heat shrink tubing comes to an end, but there’s one remaining step.

This heated thermoplastic is then used to coat electrical joints, wires, and terminals. For greater adhesion, heat is reapplied to ensure that the tube returns to its original size. Getting the temperature right is essential as too much heat may end up damaging the components. Or a flame that’s not hot enough might lead to flimsy tubing.

What Type of Materials Can Be Used for Heat Shrink Tubing?

Heat shrink tubing demands the need for a limited array of thermoplastics. These should have a decent tolerance for high temperatures which is why additives are often mixed with a primary thermoplastic for ideal results.

If electricians could pick favorites, Polyolefin would probably take the cake. This material is widely used for its thermal resistance. Although polyolefin is pricier than alternatives, it flaunts a temperature tolerance of up to 275 degrees Fahrenheit. Similarly, adhesive polyolefin is preferred because it creates a secure seal. Advanced formulas use a bunch of additives that improve the quality of adhesive-lined polyolefin to resist moisture and dust.

When heat tolerance isn’t the priority, manufacturers use PVC (polyvinyl chloride). The latter is durable, retains shape up to 275 degrees Fahrenheit and curbs potential damage inflicted by abrasive elements. Most importantly, PVC is cheaper than most other materials and available in a variety of vibrant colors.

Can Amateurs Try Heat Shrink Tubing Without Any Professional Assistance?

If by now, you figure that heat shrink tubing seems super easy, think again. While there is no rigid rule or hazard warning preventing amateurs from going at the process themselves, it is advised against. Electrical professionals who handle heat shrink tubing have the necessary experience to effectively conduct the procedure. For one, they’re more efficient and understand what type of materials are best suited depending on the type of application. As an average layman, you will first need to educate yourself on the heat tolerance of tubing elements, invest in tactical tools and watch YouTube tutorials on repeat. Naturally, that’s a hassle in itself which is why you should resort to the works of a specialist.