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300PCS Haisstronica Solder Seal Wire Connectors - Waterproof Heat Shrink Butt

300PCS Haisstronica Solder Seal Wire Connectors - Waterproof Heat Shrink Butt

Regular price £15.00 GBP
Regular price £23.00 GBP Sale price £15.00 GBP
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300PCS Premium Solder Seal & Heat Shrink Connectors Kit

The ultimate marine-grade, weatherproof electrical wire terminal kit for seamless, long-lasting connections in seconds.

Professional Electrical Connections Made Effortless

No crimping required. No loose connections. Engineered for harsh environments, this comprehensive 300-piece kit provides industrial-strength environmental sealing and premium solder-melt connectivity for automotive, marine, and home DIY projects.


Engineered for Superior Performance:

💧 100% Weatherproof & Waterproof Seal

The advanced dual-walled tubing system features a precise amount of hot-melt adhesive that cools, hardens, and reaches full bond strength within seconds, preventing any moisture or wire corrosion.

⚡ Premium Built-in Solder Seal Ring

Pre-measured solder rings melt and flow seamlessly into the wire strands. This guarantees a highly conductive, low-resistance, and mechanically bulletproof connection every time, even for larger wire gauges.

🛡️ High Abrasion & Impact Resistance

Tough, eco-friendly heat-shrink outer tubing protects wires from scuffs, cuts, abrasions, and low-impact strains. Ideal for heavy-duty setups in harsh or vibrating environments.

🌍 Certified Quality & Compliance

Work with complete peace of mind. Our wire connectors fully comply with international safety standards including ROHS, ISO, SGS, and CE.

What's Inside The Kit (300 PCS Total)

Item # Color A.W.G Size (Diameter) Qty
SST-41 🟨 Yellow 12-10 AWG 4.0 - 6.0 mm² 10 pcs
SST-31 🟦 Blue 16-14 AWG 1.5 - 2.5 mm² 30 pcs
SST-21 🟥 Red 22-18 AWG 0.5 - 1.0 mm² 35 pcs
SST-11 ⬜ White 26-24 AWG 0.25 - 0.35 mm² 25 pcs
Tubing ⬛ Black Heat Shrink 3.2 / 1.6 mm (20mm Length) 200 pcs

🔥 Pro-Application & Usage Guide

✨ Recommended: Use a Heat Gun

  • Provides even, uniformly distributed, and controlled thermal delivery.
  • Drastically reduces the risk of burning or local wire damage.
  • Ensures professional, clean, and highly consistent waterproof results.

⚠️ Alternative: Using a Lighter (With Extreme Caution)

  • Utilize strictly the lower blue zone of the flame (lower temperature profile).
  • Avoid the top yellow zone entirely to prevent charring or burning the casing.
  • Keep the heat source moving constantly at a safe distance to ensure even distribution.

🛡️ Important Safety Protocol

Always operate in a well-ventilated workspace. Keep heat sources clear of flammable objects, and avoid heating a localized point for an extended period.

📊 Expected Result When Followed Correctly:

The inner solder ring melts perfectly into your stripped wire strands for an instant low-resistance path, while the outer dual-walled adhesive sleeve shrinks flawlessly to form a watertight, vibration-resistant, beautifully streamlined joint.

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