Heat Shrink Tubing φ5.5mm 2:1 – Electrical Wire Sleeving, 7 Colors, 1M–100M

Measure the cable run you need to cover and add 10–15% for overlap and trimming. For example, a 3M (≈9.8 ft) cable run typically needs a 5M length to allow for positioning and cutting. We offer 1M, 2M, 5M, 10M, 20M, 50M, and 100M options — buying a longer roll is generally more cost-effective for projects requiring many short pieces.

A 2:1 shrink ratio means the tubing shrinks to approximately half its original diameter when heat is applied. This φ5.5mm tubing will generally recover to around 2.75mm (≈0.11"), creating a snug fit around wires and connectors in that size range.

This tubing typically activates at around 70–90°C (158–194°F) and fully recovers at approximately 120°C (248°F). A heat gun is recommended for even, controlled shrinkage. A lighter can work for short sections but may cause uneven results or scorching if held too close.

Standard polyolefin heat shrink tubing generally provides basic moisture resistance once fully shrunk, making it suitable for light outdoor, under-hood, and marine use. For prolonged UV exposure, submersion, or harsh chemical environments, an adhesive-lined (dual-wall) variant is generally recommended for a watertight seal.

The 5.5mm (≈0.22") expanded inner diameter typically fits wire bundles, connectors, and cables up to approximately 5mm in outer diameter before shrinking. This generally corresponds to wire gauges in the AWG 4–10 range, though actual fit depends on insulation thickness and connector size. When in doubt, measure your cable's outer diameter and compare to the expanded ID.

This heat shrink tubing is made from polyolefin, which is generally electrically insulating and flame-retardant. For specific compliance certifications (UL, RoHS, VW-1 flame rating), please contact us to confirm before use in regulated or safety-critical applications.

Yes — all lengths are sold as continuous rolls or straight cuts that you can trim with scissors or a utility knife to any length needed. Buying a longer roll (10M, 20M, or 100M) is cost-effective for projects requiring many short pieces, such as wire harness production or panel wiring.

No — all color variants share the same 2:1 shrink ratio and polyolefin insulation properties. Color is used for wire identification, circuit labeling, and organization. The transparent variant lets you see the underlying wire markings or a printed label through the sleeve, which is useful for traceability in control panels and instrumentation wiring.