HSC-F Double-Wall Heat-Shrink Waterproof End Cap
Double-wall end cap for sealing and protecting cable ends in harsh environments.
Cross-linked polyolefin outer + hot-melt adhesive inner for a uniform, waterproof seal.
Operating temp −45 °C ~ +125 °C; initial shrink ≥70 °C; full shrink ≥125 °C; shrink ratio 4:1.
Available in black and transparent versions; RoHS compliant.
Overview
The HSC-F is a double-wall heat shrink end cap designed to seal and protect power-cable ends and wire
bundles in demanding environments. Its radiation cross-linked polyolefin outer layer delivers durability, while the inner
hot-melt adhesive flows during heating to fill gaps and bond to the cable jacket, forming a uniform, waterproof and airtight
termination.
The series is available in black and transparent versions to meet identification and inspection needs.
Typical processing uses a hot-air gun or oven; initial shrinking starts around 70 °C and full recovery is achieved close to 125 °C.
Key Features
- Shrink ratio: 4:1
- Initial shrink ≥70 °C; full shrink ≥125 °C
- Operating temperature: −45 °C ~ +125 °C
- Construction: Cross-linked polyolefin outer + hot-melt adhesive inner
- Benefits: Waterproof sealing, corrosion protection, neat cable termination
- Compliance: RoHS; colors: Black, Transparent
For field terminations and storage protection, this heat shrink end cap provides quick, repeatable sealing performance
on power-wire ends and cable jackets.
Technical Specifications (Outer Layer / Tests)
| Property | Index | Test Method |
|---|---|---|
| Tensile strength (MPa) | ≥10.4 | ASTM D 2671 |
| Elongation at break (%) | ≥300 | ASTM D 2671 |
| Axial rate of change (%) | ≥7.3 (158 °C × 168 h) | — |
| Tensile strength after aging (MPa) | ≥100% (158 °C × 168 h) | — |
| Elongation at break after aging (%) | −8% ~ +8% | ASTM D 2671 |
| Flame performance (outer layer) | Self-extinguishing in 30 s (black) | SAE-AMS-DTL-23053/5 |
| Thermal shock | No cracks, no dripping (225 °C × 4 h) | ASTM D 2671 |
| Cold bending flexibility | No crack (−40 °C × 4 h) | ASTM D 2671 |
| Water absorption (%) | <0.50 | ASTM D 2671 (B) |
| Volume resistivity (Ω·cm) | ≥1×1014 | IEC 60093 |
| Breakdown strength (kV/mm) | ≥22 | IEC 60243 |
Specification Sheet (Dimensions)
| Model | Standard length L (mm) | Supplied inner diameter D (mm) | Inner diameter d (≤ mm) | Total wall thickness t (≥ mm) | Outer thickness W (≥ mm) | Glue layer thickness (≥ mm) |
|---|---|---|---|---|---|---|
| HSC-F-1 | 30 / 35 | ≥5.72 | ≤1.27 | ≥1.20 | ≥0.64 | ≥0.56 |
| HSC-F-2 | 30 / 35 | ≥7.44 | ≤1.65 | ≥1.52 | ≥0.76 | ≥0.76 |
| HSC-F-3 | 40 / 50 | ≥10.85 | ≤2.41 | ≥1.91 | ≥0.89 | ≥1.37 |
Note: custom sizes and lengths are available on request.
Applications
- Sealing and protecting power-wire ends and cable jackets
- Temporary storage protection against moisture and dust
- Outdoor and industrial environments requiring durable end termination
heat-shrink tubing pillar page,
or see our semi-rigid double-wall option
HSC-B.
Related Products
- Electrical heat shrink tube — HTS 2X
- Polyolefin heat shrink tube — HTD 2X
- Adhesive lined heat shrink tube — HS4X-B
- Marine heat shrink tube — HS-GF 3X/4X
- Heat shrink tube kit — HSTW2X
- Semi-rigid heat shrink end cap — HSC-B
- Heat shrink tube for auto (EV busbar) — HSNE-F
Standards Referenced
FAQs
What is HSC-F used for?
designed to seal cable/wire ends against moisture and provide mechanical protection.
How do I select the end-cap size?
adhesive should fully wet the end face and jacket for a tight waterproof seal.
What shrinking temperature should I use?
avoid open flame. Press gently while warm to help the adhesive fill the cable end.
