When repairing braided shielding, how much should you overlap heat shrink tubing?

When repairing braided shielding, how much should you overlap heat shrink tubing?

• A. At least 1/4 inch
• B. At least 1/2 inch
• C. At least 1 inch
• D. No overlap

Answer: (A)

Overlap of heat shrink tubing over a repaired braided shield should be at least 1/4 inch. This small overlap ensures the shield seam is fully covered and the insulating layer forms a continuous seal, protecting against moisture, abrasion, and corrosion while preserving electrical shielding performance. Using more overlap isn’t usually needed and can create bulk or interfere with connector interfaces, whereas no overlap leaves the shield exposed and can compromise EMI containment. After shrinking, the tubing should firmly grip both sides of the repaired area with a clean, continuous cover.

Overlap of heat shrink tubing over a repaired braided shield should be at least 1/4 inch. This small overlap ensures the shield seam is fully covered and the insulating layer forms a continuous seal, protecting against moisture, abrasion, and corrosion while preserving electrical shielding performance. Using more overlap isn’t usually needed and can create bulk or interfere with connector interfaces, whereas no overlap leaves the shield exposed and can compromise EMI containment. After shrinking, the tubing should firmly grip both sides of the repaired area with a clean, continuous cover.