Zipper Heat Shrink Tube
Zipper Heat Shrink Tube is built from Irradiation cross-linked polyolefin + waterproof seal strip. It ships expanded and recovers to a tight, conforming fit once you apply heat (hot-air gun, 150–250 °C). Buyers spec it for In-service line repair and retrofitting — the typical call is a sized part that stays put through vibration, thermal cycling and field handling. Below is the spec table, the size matrix we keep in stock, and the selection notes our engineering team uses when a purchaser sends a cable or component drawing.
Specification
| Material | Irradiation cross-linked polyolefin + waterproof seal strip |
|---|---|
| Wall type | Zipper (open/close) type |
| Note | Add without disassembly; for installed lines |
What it is and how it recovers
Zipper Heat Shrink Tube starts as an expanded tube. The expansion is locked in by cross-linking, so it holds the large diameter until heat is applied and it recovers toward its extruded size. Because the body is Irradiation cross-linked polyolefin + waterproof seal strip, the recovered wall keeps its dielectric strength and mechanical protection after cooling — it does not relax back. For procurement this matters: the part you receive is reusable on the bench, but once installed it stays put for the life of the assembly.
Where Zipper Heat Shrink Tube is used
Primary applications: In-service line repair and retrofitting.
How to select the right size
Specifying Zipper Heat Shrink Tube is mostly about matching three numbers to the part you are covering:
- Supplied vs. recovered diameter. The sleeve must slide over the largest feature (connector, lug, splice) and recover snugly on the smallest. Send us the largest and smallest OD and we return the exact part number.
- Wall and adhesive. Thin wall for tight harness bundles; medium/thick wall or adhesive-lined (dual-wall) where you need environmental sealing or abrasion resistance. We keep both in stock.
Frequently asked questions
What shrink ratio should I choose for Zipper Heat Shrink Tube?
If the connector or lug is only slightly larger than the wire, a 2:1 ratio is enough. When one sleeve must cover both a bare conductor and a bulky barrel, ask for 3:1 or 4:1 (we stock 2:1/3:1/4:1). The rule is: supplied ID ≥ ratio × largest object OD.
Can Zipper Heat Shrink Tube be used outdoors / buried?
Single-wall polyolefin is fine for indoor harness protection. For outdoor, buried or wet locations specify the adhesive-lined (dual-wall) version — the melt adhesive seals out moisture and resists tracking. Tell us the environment and we point you to the right wall type.
How do I get a sample or a cut length of Zipper Heat Shrink Tube?
We supply standard coils and can cut to length or pre-cut pieces for prototyping. Send the required ID, length and quantity and we quote a stock or made-to-order code.
Request a quote for Zipper Heat Shrink Tube
Tell us the inner diameter, wall type, length and quantity you need, plus the voltage class and environment. We return a sized part number, stock status and lead time — no price guessing, no minimum-order surprises.
Size range & specification notes
免拆卸即可加装；适用于已敷设线路