Waterproof Solder Seal Heat Shrink Wire Connectors 50–100Pcs
Waterproof Solder Seal Heat Shrink Wire Connectors 50–100Pcs
Waterproof Solder Seal Heat Shrink Butt Wire Connectors
Make fast, reliable, and fully waterproof wire connections with these Solder Seal Heat Shrink Butt Connectors. Each sleeve combines a copper solder ring and dual-wall heat shrink tubing in one compact terminal — just insert your wires, apply heat, and you're done. No soldering iron, no crimping tool required. Available in packs of 50, 70, or 100 pieces to suit any job size.
Made in Mainland China.
Key Features
- All-in-One Design: Integrated solder ring and heat shrink tubing — solder and seal in a single step.
- Fully Waterproof & Insulated: Dual-wall construction with hot-melt adhesive creates an airtight, moisture-proof seal ideal for automotive, marine, and outdoor wiring.
- Strong Conductivity: Copper tape solder sleeve ensures a low-resistance, high-strength electrical connection.
- Rapid Heat Shrinkage: Begins shrinking at 80°C; full shrinkage above 160°C for a tight, secure bond around wire insulation.
- Wide Temperature Range: Operates reliably from -10°C to 100°C — suitable for engine bays, outdoor fixtures, and more.
- Multiple Sizes Included: Kit contains multiple wire gauge sizes so you're covered for a wide variety of wiring tasks.
- Easy to Store: Compact and neatly packaged for convenient storage in your toolbox or workshop.
Technical Specifications
| Working Temperature | -10°C to 100°C |
| Starting Shrinkage Temp | 80°C |
| Full Shrinkage Temp | >160°C |
| Tin Ring Dissolution Temp | 220°C |
| Dielectric Strength | 1 KW |
| Material | Plastic outer sleeve, copper solder tin ring |
| Pack Size | 50 / 70 / 100 pcs |
| Origin | Mainland China |
What's in the Box
- 50, 70, or 100 × Solder Seal Heat Shrink Butt Connectors (assorted sizes)
Perfect For
- Automotive wiring repairs and upgrades
- Marine and boat electrical systems
- Outdoor lighting and landscape wiring
- DIY electronics and home electrical projects
- Any environment where moisture protection is critical
Looking for more workshop essentials? Check out our Air Compressor Pressure Gauge – 0-10/0-12/0-25 Bar DIY Tool and our Electromagnetic Induction Tester – Coil & Circuit Fault Detector for more reliable DIY and electrical tools.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: Do I need a soldering iron to use these solder seal heat shrink connectors?
A: No soldering iron is needed. Simply insert both wire ends into the connector, then apply a heat gun or lighter until the sleeve shrinks and the integrated tin ring melts and bonds the wires together. The result is a secure, waterproof solder joint without any specialist tools.
Q: What wire gauges are compatible with these heat shrink butt connectors?
A: Each pack includes assorted sizes to accommodate a range of wire gauges commonly used in automotive, marine, and general electrical wiring. Please refer to the product images for the specific size chart included with your set.
Q: Are these connectors suitable for outdoor or marine use?
A: Yes. The dual-wall heat shrink tubing with internal hot-melt adhesive creates a fully waterproof, moisture-resistant seal, making these connectors ideal for outdoor, marine, and under-hood automotive applications where exposure to water and vibration is a concern.
Q: How many connectors come in a set?
A: These solder seal connectors are available in packs of 50, 70, or 100 pieces. Choose the pack size that best suits your project needs at checkout.