100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer
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100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals - HomeDIYer

100Pcs Waterproof Seal Heat Shrink Butt Wire Splice Connectors Crimp Terminals

HomeDIYer
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By HomeDIYer®

Price:
$11.99 USD
Stock:
In stock (146 units), ready to be shipped

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Description

Heat Shrink Butt Connectors — Crimp-and-Seal Wire Splicing in One Step

Dealing with frayed wires, exposed splices, or connections that fail the moment moisture hits them? Whether you're rewiring a vehicle, repairing marine electronics, or fixing a home appliance, unreliable wire joints are a real hazard. These 100Pcs Waterproof Heat Shrink Butt Wire Splice Connectors give you a professional-grade, weatherproof connection every time — no tape, no exposed copper, no callbacks.

Each connector features a single-piece copper barrel encased in dual-wall polyolefin tubing (3:1 shrink ratio) with a heat-activated adhesive lining. The kit includes 40 red connectors (22–16 AWG), 40 blue connectors (16–14 AWG), and 20 yellow connectors (12–10 AWG), all stored in a clear plastic organizer box. Every connector is imprinted with its wire gauge for instant identification on the job.

Use them for automotive wiring harness repairs, marine and boat electrical systems, home appliance rewiring, industrial control panels, and trailer lighting — anywhere a durable, moisture-proof splice is non-negotiable.

✅ Compatible with 22–10 AWG stranded and solid copper wire. Suitable for automotive, marine, RV, home appliance, and industrial electrical applications.

Key Features

  • 🔩 Single-Piece Copper Barrel — Machined from one solid piece of copper for maximum conductivity and a gas-tight crimp that resists vibration and pull-out.
  • 🌊 Dual-Wall Polyolefin Tubing (3:1 Shrink Ratio) — Outer sleeve shrinks tightly around the wire while the inner hot-melt adhesive flows into every gap, creating a fully waterproof seal.
  • 🔥 Heat-Activated Adhesive Lining — Internal adhesive bonds to wire insulation on both ends, locking out moisture, corrosion, and contaminants for the life of the connection.
  • 🏷️ Wire Gauge Imprint on Every Connector — Each connector is stamped with its AWG range (22–16 / 16–14 / 12–10), so you grab the right size instantly without guessing.
  • 📦 100-Piece Assortment in 3 Sizes — 40 red (22–16 AWG), 40 blue (16–14 AWG), and 20 yellow (12–10 AWG) connectors, organized in a reusable clear plastic storage box.
  • ⚡ Crimp-Then-Heat Installation — Insert wire, crimp the metal barrel with a plier, then apply heat to both ends of the connector to activate the adhesive seal — a reliable two-step process that outperforms tape or push-in connectors.

What's in the Box

  • 40× Red Heat Shrink Butt Connectors — 22–16 AWG (0.5–1.5 mm²)
  • 40× Blue Heat Shrink Butt Connectors — 16–14 AWG (0.5–1.5 mm²)
  • 20× Yellow Heat Shrink Butt Connectors — 12–10 AWG (0.5–1.5 mm²)
  • 1× Clear Plastic Storage Box

Who Is This For

🚗 Automotive & Trailer Wiring

Repair or extend wiring harnesses, trailer lighting, and sensor leads with a connection that handles engine-bay heat, vibration, and road moisture without loosening.

⛵ Marine & Boat Electrical

Salt air and constant humidity destroy ordinary splices fast. The waterproof adhesive seal keeps bilge pump wiring, navigation lights, and onboard electronics protected below and above the waterline.

🔧 Home Appliance & Electrical Repair

Splice oven, dishwasher, or HVAC wiring cleanly and safely. The color-coded sizes make it easy to match the right connector to the wire gauge without a multimeter.

🏭 Industrial Control Panels & DIY Projects

Electricians and DIYers who need a fast, code-friendly splice in control cabinets, outdoor lighting runs, or workshop equipment will appreciate the organized kit and stamped gauge markings.

Technical Specifications

Total Quantity 100 pcs (40 Red + 40 Blue + 20 Yellow)
Contact Material Copper (single-piece barrel)
Outer Sleeve Material Dual-wall Polyolefin
Shrink Ratio 3:1
Inner Lining Heat-activated adhesive (hot melt)
Red Connectors 22–16 AWG (0.5–1.5 mm²) — 40 pcs
Blue Connectors 16–14 AWG (0.5–1.5 mm²) — 40 pcs
Yellow Connectors 12–10 AWG (0.5–1.5 mm²) — 20 pcs
Wire Gauge Range 22–10 AWG
Waterproof Yes — adhesive-sealed after heating
Installation Method Crimp + Heat
Storage Clear plastic organizer box
Application Automotive, Marine, Home Appliance, Industrial

Frequently Asked Questions

Do I need a crimping tool to use these connectors?
Yes. The correct installation process is: (1) insert the stripped wire into the connector, (2) crimp the metal barrel with a crimping plier to secure the wire mechanically, then (3) apply heat to both ends of the connector to shrink the tubing and activate the adhesive seal. Skipping the crimp step will result in a weaker connection.
What heat source should I use to shrink the connectors?
A heat gun is recommended for consistent, controlled heat. A lighter can work in a pinch but may scorch the tubing if held too close. Apply heat evenly to both ends of the connector until the tubing shrinks snugly and you see a small bead of adhesive appear at each end.
How do I choose the right color/size connector?
Each connector is stamped with its AWG range for easy identification: Red = 22–16 AWG, Blue = 16–14 AWG, Yellow = 12–10 AWG. Match the connector to the wire gauge you're splicing. When in doubt, check your wire's insulation label or use a wire gauge tool.
Are these connectors truly waterproof after installation?
Yes. When properly crimped and heated, the inner hot-melt adhesive flows around the wire insulation and the dual-wall polyolefin tubing shrinks to a 3:1 ratio, creating a moisture-proof seal. This makes them suitable for marine, outdoor, and under-hood automotive applications.
Can I use these on solid copper wire as well as stranded wire?
These connectors are designed primarily for stranded copper wire, which is standard in automotive and marine wiring. They can generally accommodate solid copper wire within the stated AWG range, but stranded wire typically yields a better crimp and seal.
What is the shrink ratio of the tubing?
The polyolefin outer tubing has a 3:1 shrink ratio, meaning it shrinks to one-third of its original diameter when heated. This ensures a tight, conforming fit over a wide range of wire insulation diameters within each AWG range.
Are the connectors RoHS compliant or rated for a specific voltage?
These connectors are intended for low-voltage DC applications typical of automotive, marine, and home appliance wiring (generally up to 600V DC). For specific compliance certifications or high-voltage applications, please contact us to confirm suitability before purchase.
Add all 100 connectors to your cart and have the right size ready for every wire gauge — from fine 22 AWG sensor leads to heavy 10 AWG power cables.

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