HST-D 3X Adhesive-Lined 3:1 Heat Shrink Tube (Double-Wall)
Double-wall, adhesive-lined 3:1 heat shrink tube for sealing and protection.
Cross-linked polyolefin outer + hot-melt adhesive inner for waterproof, airtight joints.
Operating temp −55 °C ~ 125 °C; initial shrink ≈ 70 °C; full shrink ≈ 125 °C.
Black as standard; sizes cover splices, branches, cable repair and corrosion protection.
Overview
The HST-D 3X series is an adhesive-lined, double-wall 3:1 heat shrink tube engineered for sealing,
waterproofing and corrosion protection. A radiation cross-linked polyolefin outer wall ensures durability, while the inner
hot-melt adhesive flows during heating to fill gaps and bond to cable jackets for a uniform, solid seal.
With its higher shrink ratio, this 3:1 heat shrink tube copes well with irregular shapes and large-to-small
transitions, delivering clean, professional results on splices, wire branches and field repairs.
Key Features
- 3:1 heat shrink tube with adhesive-lined double wall for reliable sealing.
- Outer: radiation cross-linked polyolefin; Inner: hot-melt adhesive.
- Operating temperature: −55 °C to 125 °C.
- Initial shrinking ≈ 70 °C; full shrinking ≈ 125 °C.
- Benefits: waterproof, airtight, anti-corrosion, strain relief, neat finish.
- Standard color: Black (others customizable on request).
Technical Summary
Product specifications
| Specification | Supplied inner diameter (mm) | Complete contraction (mm) | Standard packaging (M/plate) | |||
|---|---|---|---|---|---|---|
| Inch | mm | Inner diameter (≤) | Total wall thickness | Adhesive layer (thick wall) | ||
| 3/32 | 2.4 | ≥2.4 | ≤0.8 | 0.80±0.30 | 0.40±0.20 | 200 |
| 1/8 | 3.2 | ≥3.2 | ≤1.0 | 0.90±0.30 | 0.40±0.20 | 200 |
| 3/16 | 4.8 | ≥4.8 | ≤1.6 | 1.05±0.30 | 0.40±0.20 | 100 |
| 1/4 | 6.4 | ≥6.4 | ≤2.2 | 1.25±0.30 | 0.45±0.20 | 100 |
| 5/16 | 7.9 | ≥7.9 | ≤2.7 | 1.35±0.30 | 0.45±0.20 | 100 |
| 3/8 | 9.5 | ≥9.5 | ≤3.2 | 1.45±0.30 | 0.50±0.20 | 50 |
| 1/2 | 12.7 | ≥12.7 | ≤4.8 | 1.65±0.30 | 0.50±0.20 | 25 |
| 5/8 | 15.0 | ≥15.0 | ≤5.2 | 1.80±0.30 | 0.55±0.30 | 25 |
| 3/4 | 19.1 | ≥19.1 | ≤6.5 | 1.95±0.30 | 0.60±0.30 | 25 |
| 1 | 25.4 | ≥25.4 | ≤8.5 | 2.00±0.40 | 0.60±0.30 | 25 |
| 1-1/4 | 30.0 | ≥30.0 | ≤10.0 | 2.15±0.40 | 0.65±0.30 | 25 |
| 1-1/2 | 39.0 | ≥39.0 | ≤13.5 | 2.45±0.40 | 0.75±0.30 | 25 |
| 2 | 50.0 | ≥50.0 | ≤17.0 | 2.75±0.40 | 0.80±0.30 | 25 |
Applications
- Sealing and protecting splices in electronic equipment wiring.
- Insulating and waterproofing wiring branches and connectors.
- Preventing rust on metal wires and terminals; outdoor/harsh environments.
heat-shrink tubing pillar page,
or see the single-wall model
HTS 2X
for basic insulation.
Related Products
- Adhesive-lined heat shrink tube — HST-D 4X
- Adhesive-lined heat shrink tube — HS4X-B
- Polyolefin heat shrink tube — HTD 2X
- Marine heat shrink tube — HS-GF 3X/4X
- Heat shrink end cap — HSC-F
- Semi-rigid heat shrink end cap — HSC-B
Standards Referenced
FAQs
What is HST-D 3X used for?
How should I size a 3:1 double-wall tube?
When to choose 3:1 vs 4:1?
