φ6–6.5mm Heat Shrink Tubing 2:1 — Electrical Wire Sleeving, Multiple Colors & Lengths

Measure the total length of wire or cable you need to cover, then add 10–15% extra for overlap and trimming. For single repairs, 1M or 2M is typically sufficient. For wiring harnesses or larger projects, 5M–20M rolls are generally more economical. For commercial or bulk use, 50M and 100M options are available.

A 2:1 shrink ratio means the tubing shrinks to approximately half its original diameter when heat is applied. For example, φ6mm tubing will shrink down to roughly 3mm (≈1/8"), creating a snug, insulating sleeve around the wire or connector.

φ6mm tubing is generally compatible with wire bundles or connectors up to about 5.9mm in diameter before shrinking. φ6.5mm tubing accommodates slightly larger bundles up to approximately 6.4mm. Always verify your wire or connector outer diameter before selecting a size to ensure the tubing slides on freely and recovers tightly.

This tubing is typically made from polyolefin, which generally offers good resistance to moisture and UV exposure for standard outdoor and automotive wiring applications. For prolonged submersion or extreme UV environments, an adhesive-lined or dual-wall variant is generally recommended. For automotive use, this type of electrical sleeving is widely used in harness repairs and connector protection.

Polyolefin heat shrink tubing typically begins to shrink at around 90°C (194°F) and fully recovers at approximately 120°C (248°F). A heat gun set to low or medium is the most reliable tool for even shrinkage. A lighter or match can work for small sections but may cause uneven shrinkage or surface scorching if held too close.

Polyolefin heat shrink tubing of this type is generally RoHS-compatible and widely used in automotive wiring, marine electronics, and DIY electrical projects. For safety-critical or industrial applications requiring specific compliance documentation, please contact us to confirm before ordering.

Color choice is typically functional: Black is the most common for general insulation and concealment. Red and Blue are often used for positive/negative polarity identification. Yellow and Green are common for ground or signal wires. White and Transparent are useful when you need to see the wire underneath or label the connection clearly.

Yes. Polyolefin heat shrink tubing in this diameter range cuts cleanly with standard scissors or a utility knife. For straight, clean cuts on longer lengths, a sharp blade and a flat cutting surface are recommended. Cut the tubing slightly longer than needed — you can always trim after shrinking.