Waterproof Solder Seal Heat Shrink Wire Connectors 50/100 Pcs
Waterproof Solder Seal Heat Shrink Wire Connectors 50/100 Pcs
Waterproof Solder Seal Heat Shrink Wire Connectors
Make fast, reliable, and fully weatherproof wire splices — no soldering iron required. These solder seal sleeve terminals combine a built-in tin-alloy solder ring with a heat-shrink tube, so one pass of a hot air gun delivers a mechanically strong, waterproof, and insulated connection every time. Perfect for automotive wiring repairs, marine applications, home electrical projects, and more.
Key Features
- Premium Plastic + Tin Alloy Construction — Durable, corrosion-resistant materials deliver excellent conductivity alongside reliable insulation for long-lasting performance.
- Wide Temperature Range — Rated for -55 °C to 125 °C, these connectors perform consistently in demanding environments. Heat shrink activates at 80 °C; solder begins to flow at 138 °C and fully melts at 160 °C for a secure bond.
- Tool-Free Installation — No soldering iron, no flux, no crimping tool needed. Insert the wire, apply heat with a hot air gun, and the sleeve shrinks tightly around the wire for a firm, insulated seal in seconds.
- High Dielectric Strength — Up to 1 kV dielectric strength effectively prevents leakage and keeps vehicle and household electrical systems safe.
- Color-Coded Wire Gauges — Four colors simplify wire gauge matching at a glance, reducing errors during installation.
Technical Specifications
| Material | Plastic + Tin Alloy |
| Working Temperature | -55 °C to 125 °C |
| Shrink Temperature | 80 °C |
| Solder Melt Point | Initial 138 °C / Full 160 °C |
| Dielectric Strength | 1 kV |
| Package Dimensions | 12.8 × 7 × 2.1 cm |
Wire Gauge Guide (by Color)
- White — 0.25–0.34 mm²
- Red — 0.5–1.5 mm²
- Blue — 1.5–2.5 mm²
- Yellow — 4–6 mm²
Package Contents
- 50-Piece Set: 10 White + 23 Red + 12 Blue + 5 Yellow
- 100-Piece Set: 25 White + 35 Red + 30 Blue + 10 Yellow
Made in Mainland China.
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Frequently Asked Questions
Q: Do I need a soldering iron to use these solder seal wire connectors?
A: No soldering iron is needed. Simply insert the wire ends into the appropriate color-coded solder seal sleeve and apply heat from a standard hot air gun. The sleeve shrinks, the built-in solder flows, and you get a secure, waterproof connection in seconds — making these ideal for DIY automotive and home electrical repairs.
Q: What wire gauges are compatible with these heat shrink connectors?
A: The connectors are color-coded by wire gauge: White handles 0.25–0.34 mm², Red covers 0.5–1.5 mm², Blue fits 1.5–2.5 mm², and Yellow accommodates 4–6 mm². Always match the connector color to your wire size for the best seal and conductivity.
Q: Are these waterproof heat shrink connectors suitable for outdoor and automotive use?
A: Yes. The solder seal sleeves are rated for temperatures from -55 °C to 125 °C and carry a dielectric strength of 1 kV, making them well-suited for automotive wiring, marine environments, outdoor electrical installations, and other applications exposed to moisture or temperature extremes.
Q: How many connectors are included in each set?
A: The 50-piece set includes 10 White, 23 Red, 12 Blue, and 5 Yellow connectors. The 100-piece set includes 25 White, 35 Red, 30 Blue, and 10 Yellow connectors — providing a versatile assortment for a wide range of wire gauges.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.