Solder Seal Heat Shrink Butt Connectors Waterproof Marine 

The Haisstronica Solder Seal Heat Shrink Butt Connector simplifies wire joining by combining solder, insulation, and waterproof sealing into one quick step. Just strip your wires, insert them into the connector, and apply heat evenly—no crimping required. As the tubing shrinks, the solder melts and fuses the wires, while the adhesive liner seals the connection to prevent moisture and corrosion.

Engineered for demanding environments, this connector features thick polyolefin tubing with excellent stretch and mechanical strength. Rated IP67 waterproof and compliant with ROHS, ISO 9001:2008, SGS, and CE standards, it's a dependable solution for marine, automotive, and outdoor electrical work.

The low-melt solder activates at 280°F and fully melts at 320°F, while the tubing shrinks at just 176°F. For best results, gradually heat the connector with a hot air gun while rotating it to ensure an even seal. Once you get the hang of it, it’s an incredibly efficient way to make secure connections—cutting your wiring time in half without sacrificing quality.

• Low Temp Self Soldering : with one step, you get a soldered, sealed, and insulated connection.
• Shrink Tube is Thicker: Excellent stretch and mechanical damage resistance. Quality and durability is outstanding!
• Waterproof : Low heat solder and hot melt adhesive can produce perfect seal, protect electrical connections.
• Easy to Use: Simply position the stripped wires into the solder sleeve and apply heat to finish the connection. Makes butt connections a breeze. Electrical work gets cut in half!
• Compliant with All Relevant Standards: Compliant with ROHS, ISO 9001:2008, SGS and CE standards.

Solder Seal Heat Shrink Wire Connectors:

• Easy to Use - Makes butt connections a breeze. Electrical work gets cut in half!
• You need a good wire stripping tool, and a reliable heat gun or lighter for melting the solder and shrinking the tubing.
• Basically, with one step you get a soldered, sealed, and insulated connection. It does take a bit of practice but once you get the hang of it, it's pretty neat.

Technical Specifications:

• Shrinkage ratio 2:1.
• Waterproof Rating: IP67.
• Material: Polyolefin Tubing with Solder and hot melt adhesive Inside.
• Minimum temperature for solder to melt: 280°F / 138°C
• The temperature of the solder completely melted: 320°F / 160°C
• Minimum shrink temperature: 176°F / 80°C
• Operating temperature :-67°F / -55℃ - 257°F / 125℃

Note:

• For best result, please use a hot air gun and rotate the connector to evenly apply heat.
• Please raise the temperature from low to high gradually when you use the hot air gun to heat the wire connector.
• Please DO NOT set the high temperature at the beginning, or the surface of connector will be over-heated, which will lead to the tube melt while the solder ring still not melt.
• Keep the hot air gun at the proper distance. Don't get too close.