Pexco specializes in heat shrink and flexible tubing. Take a tour of our facility in Woburn, Massachusetts, and get a sneak peek at how we operate things. Heat shrink tubing is used to provide a layer of insulation, environmental protection, or abrasion resistance to existing cables, wires, or other components. Available in Polyolefin and PVC formulations, Insultab’s heat shrink tubing is also available in a multitude of colors to help simplify the identification, organization, and bundling of cables and wires, along with other creative solutions.