Day: May 11, 2026

Heat shrink tubing is a polymer tube that shrinks in diameter when heated to a specified recovery temperature. I usually explain it to customers as a protective sleeve that starts in an expanded form, slides easily over a wire, splice, terminal, or branch point, and then contracts tightly around that area when heat is applied. This shrinking action creates a close-fitting layer that improves insulation, mechanical protection, and overall harness durability.