Double-Wall (Adhesive-Lined) Heat-Shrink Tube
Inner adhesive layer seals out moisture on cable and harness joints. Double-wall tube carries an inner melt adhesive that flows on shrink to seal the joint against moisture and debris. Used on harness and cable transitions. We supply it in the diameter and shrink ratio for your cable bundle, with the adhesive rated to the environment.
Technical specifications
| Structure | Outer shrink + inner adhesive |
| Seal | Moisture-proof on shrink |
| Shrink ratio | 3:1 / 4:1 |
| Use | Harness and cable joints |
| Material | Heat-shrink tubing (polyolefin) |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Applications by industry
- Moisture-sealed wire splices and connections
- Cable glands and junction box cable entries sealing
- Automotive and marine harness waterproof jointing
- Environmental seals on terminations and lugs
- Damaged cable jacket repair with adhesive liner
- Sealing cable tails in outdoor installations
Why crosslinked polyolefin + hot-melt adhesive for this application
The adhesive liner melts and bonds to the cable as the sleeve shrinks, creating a sealed, waterproof joint that a plain sleeve (which only grips) can't give in wet service.
Confirm temperature rating vs service heat, and that the adhesive matched the jacket (some jackets resist the liner). Avoid over-heating that rots the liner bond.
Standards: UL 224 (VW-1) / CSA, ISO 6722 (automotive).
Feature and remaining-wall review
Cut Double-Wall (Adhesive-Lined) Heat-Shrink Tube to length first, then recover it; the adhesive-lined dual-wall grade only flows properly under a controlled heat profile. Feature depth, edge distance and remaining wall are checked against the critical geometries, and capability is confirmed on your print, not from a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
Related components
Power Cable Heat-Shrink Tubing
Related insulation component from the WELLELE catalog.
PVC Heat-Shrink Sleeving
Related insulation component from the WELLELE catalog.
Silicone-Coated Fiberglass Sleeving
Related insulation component from the WELLELE catalog.
Common questions
Where would you specify Double-Wall (Adhesive-Lined) Heat-Shrink Tube?
Typical applications are harness and cable joints. Send the duty and the environment, and we will say whether this grade is the right one for Double-Wall (Adhesive-Lined) Heat-Shrink Tube.
Which material is Double-Wall (Adhesive-Lined) Heat-Shrink Tube manufactured from?
The material is Heat-shrink tubing (polyolefin). Alternate grades can be quoted against your drawing.
Is a material certificate of analysis provided for Double-Wall (Adhesive-Lined) Heat-Shrink Tube?
Yes. The material certificate of analysis travels with each batch of Double-Wall (Adhesive-Lined) Heat-Shrink Tube. First-article inspection and extra electrical testing are available when your specification lists them.
Can Double-Wall (Adhesive-Lined) Heat-Shrink Tube be produced to a customer drawing?
The bore, wall and cut length of Double-Wall (Adhesive-Lined) Heat-Shrink Tube are made to your drawing. With the drawing and the target quantity in hand we confirm feasibility and price.
Engineering Guides & Selection Notes
Technical articles that go deeper on selecting and specifying Double-Wall (Adhesive-Lined) Heat-Shrink Tube.
Get pricing for Double-Wall (Adhesive-Lined) Heat-Shrink Tube
Send the drawing for Double-Wall (Adhesive-Lined) Heat-Shrink Tube and state the annual volume. We check the grade against duty and tolerance, verify the bore, outside diameter, wall and any features of Double-Wall (Adhesive-Lined) Heat-Shrink Tube, and reply with manufacturability notes and pricing.