Choosing the Right Heat Shrink

Posted by Steve on Dec 28, 2015 10:51:00 AM

Del City offers a wide selection of heat shrink to ensure your wire and connections are protected from dirt, moisture, and corrosion. Heat Shrink is commonly used in applications where the connection is exposed to corrosive environments such as battery connections, marine panels, and trailer wiring. The heat shrink allows for the connection to be “sealed” off from salt water, road spray and debris, as well as dust and dirt.

Choosing the Right Type

The most basic choice is a 2:1 single wall non adhesive heat shrink tube. It is a good all around, general purpose product and is available on rolls as well as 4’ sticks. This style of heat shrink is most often used in general purpose applications particularly where the connection is not exposed to a lot of contaminants. In addition, this product is a UL recognized component.

The most popular option is our dual wall, adhesive lined heat shrink. It has a 3:1 shrink ratio and contains an adhesive to seal components within the heat shrink. Because of the adhesive lining it cannot be rolled and therefore is available in 4’ sticks only. This style is commonly used in marine panels and trailer wiring where the connection could be regularly exposed to moisture or dust and protecting the connection from corrosion is critical. This version is also a UL recognized component.

For heavy duty and battery applications, we offer our triple wall, 3:1 heat shrink with the adhesive lining. This product is large enough and rigid enough for battery applications and will reduce corrosion that is commonly found at the connection point. It is available in 6” pieces and 4’ sticks.

We also offer several styles of specialty heat shrink including clear view heat shrinkcolor coded heat shrink, or a 4:1 heat shrink. All of these items allow you to have a visual check to ensure proper connection and inspection of the terminal while providing a superior protection from common contaminates.


No matter your application, Del City has the right heat shrink to ensure protection of your connections. 

Topics: Automotive, Marine, Industrial, Truck/Trailer, Specialty Vehicles, Product Feature, Agricultural


Subscribe to Blog Updates



12V Electrical Industry Expertise

Welcome to the Del City Blog! At Del City, we know how important it is to not just have your supplies, but also to have industry resources. Here you will find answers and information on:

  • Industry happenings
  • Technical tips
  • Component use & information
  • New Products at Del City 
  • Del City News

Recent Posts