Dual Wall Adhesive Heat Shrink Tubing

Dual-wall heat shrink tubing with hot-melt adhesive liner for waterproof, seal-protected wire harness and cable joint protection. Shrink ratios 2:1 to 4:1. Polyolefin and LSZH options.

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Products in this family

Dual Wall Adhesive Heat Shrink Tubing 2:1

2:1 shrink ratio with hot-melt adhesive liner. Waterproof seal for wire harnesses and cable glands.

Dual Wall Adhesive Heat Shrink Tubing 3:1 & 4:1

3:1/4:1 shrink ratios for irregular shapes. High recovery with adhesive seal.

Typical applications

Technical resources

Common questions

What is the difference between single-wall and dual-wall heat shrink?

Single-wall shrinks to fit; dual-wall also has an inner hot-melt adhesive liner that flows when heated to form a permanent waterproof seal. Dual-wall is chosen for outdoor, moisture-exposed or submersible applications.

What shrink ratio do I need?

2:1 for close-fit and standard applications. 3:1 or 4:1 for covering larger components, irregular shapes or stepping down from larger connectors to smaller cables.

Is dual-wall heat shrink self-fusing?

No. It is heat-activated. The outer wall shrinks while the inner adhesive melts and flows. Apply heat evenly with a heat gun at 90-135 C.

Can I get LSZH dual-wall heat shrink?

Yes. Low-smoke zero-halogen (LSZH) adhesive and jacket options are available for enclosed or public-space installations where smoke and halogen emissions must be minimized.

What is the operating temperature range?

Polyolefin dual-wall: -55 C to +105 C continuous. Fluoropolymer option: -55 C to +200 C. Specify your exposure profile on the RFQ.

Quote Dual Wall Adhesive Heat Shrink Tubing from WELLELE

Send the drawing with your requirements — material grade, dimensions, tolerance and annual quantity. We match the grade and respond with manufacturability notes and quotation.

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