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Clear plastic box holding 350 heat-shrink butt splice connectors in five colours

Solder Seal Wire Connectors Kit 350Pcs 5Colors/5Sizes

SKU CH-1W6F-8THZX

A 350-piece kit of waterproof, heat-shrink butt splice terminals with built-in solder rings for automotive, marine and home wiring

  • Certifications and standardsUL Listed
  • Product colorBlack
  • 350 connectors in five colour-coded sizes cover a wide range of wiring tasks
  • Built-in solder ring melts and heat-shrink tubing seals for a waterproof joint
  • UL listed plus ROHS, SGS and CE certifications confirm safety and environmental compliance
  • Heat-gun installation needs no crimping tools for a fast, secure bond
  • Suitable for automotive, marine and home electrical repairs and installations

Solder seal kit for wiring projects

This 350-piece kit supplies solder seal wire connectors in five colour-coded sizes for automotive, marine and home electrical work. It contains 90 white, 100 red, 60 green, 60 blue and 40 yellow connectors to match common wire gauges. The assortment suits professionals and DIY enthusiasts who need reliable butt splices across multiple jobs.

Waterproof heat-shrink changes the joint

Each connector integrates a solder ring inside heat-shrink tubing so that a single heating step creates a waterproof, corrosion-resistant seal. The UL-listed components meet ROHS, SGS and CE standards for safety and environmental compliance. This design removes the separate crimping and taping steps required by traditional terminals.

Heat gun installation avoids common faults

Installation requires only a heat gun: insert the stripped wires, apply heat until the tubing shrinks and the solder flows, then allow the joint to cool. The most frequent issue is insufficient heat, which leaves the solder unmelted and the seal incomplete. Uneven heating can also shrink one side faster, so rotate the connector for a uniform bond.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $13.99
Typical for this category: the median of 1,040 items is $13.99.

Specifications

Product
Product colorBlack
Environment & compliance
Certifications and standardsUL Listed

Questions about this item

Do the 350 connectors in the kit need any maintenance or replacement after the heat-shrink seal is formed?

Once heated, the built-in solder ring melts and the tubing shrinks to create a permanent waterproof joint; no further maintenance or replacement of the connector itself is required.

What is the first limit reached when the 350-piece kit is used continuously for large wiring jobs?

The practical limit is the quantity of each colour — 90 white, 100 red, 60 green, 60 blue and 40 yellow — so the smallest colour (yellow, 40 pcs) runs out first.

How much heat, noise or power does the kit produce when a heat gun is run all day to shrink the connectors?

The connectors themselves generate no heat, noise or power; only the heat gun consumes electricity and produces hot air and fan noise during use.

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