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. Yes. On shrink the inner layer flows to fill the joint and seal
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. Yes. On shrink the inner layer flows to fill the joint and seal
Technical specifications
| Structure | Outer shrink + inner adhesive |
| Seal | Moisture-proof on shrink |
| Shrink ratio | 3:1 / 4:1 |
| Use | Harness and cable joints |
💾 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 to length before installation; dual-wall adhesive lined requires controlled heat profile for proper flow. Review feature depth, edge distance and remaining wall against critical geometries. Capability is confirmed on your drawing, 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
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Silicone-Coated Fiberglass Sleeving
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Common questions
What recovery temperature is needed?
Standard polyolefin recovers at 90–135 °C. PTFE at 300–400 °C. Match the recovery temperature to your assembly heat profile.
Is it RoHS and REACH compliant?
Yes. All standard grades comply with RoHS 2011/65/EU and REACH 1907/2006. Certificates supplied per batch.
Can heat-shrink be printed?
Yes — identification bands, logos and warnings printed before or after shrink. Ask for print area and ink compatibility.
What wire sizes does it fit?
ID from 0.2 mm to 200 mm flat wall, 3 mm to 300 mm dual-wall. Refer to the sizing chart on the product page.
Does the adhesive seal water?
ID from 0.2 mm to 200 mm flat wall, 3 mm to 300 mm dual-wall. Refer to the sizing chart on the product page.
Engineering Guides & Selection Notes
Related technical articles that help specify this product.
Get pricing for Double-Wall (Adhesive-Lined) Heat-Shrink Tube
Attach the drawing with annual volume. We check the material against your duty and tolerance, verify ID / OD / wall / features, and respond with manufacturability notes and pricing.