Heat Shrink Tubing

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About this category

Heat shrink tubing by size and colour — in stock in Canada, ships Canada-wide.

Techspan thin-wall heat shrink tubing in a full range of diameters and colours for insulating, strain-relieving and colour-coding wire splices and terminations. Stocked in Canada by Maple Electric — CAD pricing, ships Canada-wide, will-call pickup in Vaughan.
Common questions
What size heat shrink tubing do I need?
Choose a supplied diameter that slides easily over the joint and a recovered diameter smaller than the cable. With 2:1 tubing, pick a size roughly 20-30% larger than the largest point covered.
What does a 2:1 shrink ratio mean?
The tubing shrinks to half its supplied diameter when heated — 1/2 inch recovers to 1/4 inch. Higher ratios like 3:1 handle bigger transitions, such as a connector body down to a thin cable.
Can I shrink tubing with a lighter?
Use a heat gun — open flame heats unevenly, scorches tubing and can damage the insulation underneath. Apply even heat while rotating around the tubing until it recovers fully and smoothly.

Maple Electric Supply ships electrical materials across Canada from our Vaughan, Ontario warehouse. Free shipping on orders over $150 in Ontario and Quebec, 10% off orders everywhere else in Canada, and counter pickup in Vaughan. Lighting, wire, breakers, controls, heating, EV charging and tools for electricians, builders and facility teams.