10Pcs Solder Seal Wire Connectors3:1Shrinkage Rate Waterproof Electrical Cable Terminals Heat Shrink Tube Electrical Butt Splice

 Product Overview

Our solder seal wire connectors integrate solder ring, hot melt adhesive and heat shrink tube into one piece. No crimping tools required, just heat evenly with a heat gun or lighter to complete wire splicing. It creates fully waterproof, airtight, insulated and high-conductivity wire joints, widely used for automotive wiring, boat marine circuits, LED lights, household electrical wiring and outdoor equipment wiring connection.

Key Features

1. All-in-one Integrated Design, Easy Operation Built-in solder ring melts rapidly under heating to firmly weld two wires together; the inner hot melt glue flows to fill gaps completely, and the outer heat shrink tube shrinks tightly to wrap the joint. No crimp pliers, extra tape or separate solder wire needed.

2. IP67 Waterproof & Corrosion Resistance Inner hot melt adhesive forms a sealed waterproof layer after heating, effectively blocking moisture, rainwater, dust and salt spray erosion. Perfect for outdoor, vehicle and marine humid environments to avoid short circuit or wire oxidation failure.

3. Excellent Electrical Performance & Stable Connection High purity solder ensures ultra-low resistance and strong conductivity. Welded connection is far firmer than ordinary crimp terminals, resisting pulling, vibration and loosening during long-term use.

4. Flame-retardant Heat Shrink Shell Outer transparent polyolefin heat shrink tube features insulation, flame retardancy and anti-aging properties. The transparent body lets you visually check soldering quality directly after finishing work.

5. Color-coded Size Classification Different colors correspond to different wire gauges for quick matching: Red for 22-18 AWG, Blue for 16-14 AWG, Yellow for 12-10 AWG, convenient for quick selection in maintenance work.

Specifications

• Material: Polyolefin heat shrink tube + hot melt adhesive + tin solder ring

• Color Classification & Wire Range: Red: 0.5~1.5mm² (22-18AWG) Blue: 1.5~2.5mm² (16-14AWG) Yellow: 4.0~6.0mm² (12-10AWG)

• Shrink Ratio: 2:1

• Working Temperature: -45℃ ~ +125℃

• Waterproof Grade: IP67

Wide Applications

✅ Automotive car wiring harness modification & repair ✅ Yacht, boat, RV marine electrical connections ✅ LED strip light, landscape lamp, garden light wiring ✅ Motorcycle, trailer, lawn mower circuit splicing ✅ Household appliances, speakers, surveillance camera wiring repair ✅ Outdoor solar equipment wiring connection

Step-by-step Usage Instructions

1. Strip 5-8mm insulation off both wire ends to be connected

2. Pass both wires through the solder connector and twist copper cores together tightly inside the solder ring position

3. Heat the connector evenly from the middle solder ring section toward two ends

4. Stop heating after the solder melts fully, adhesive oozes out and the tube shrinks completely

5. Cool naturally for 30 seconds before pulling test

Advantages vs Traditional Wiring Methods

• Better waterproof effect than electrical tape

• Higher tensile strength than cold-pressed terminals

• Faster installation than traditional soldering operation

• Clear visual inspection of welding status via transparent casing