Stronica heat shrink butt connectors in blue case, 330pcs, color-coded AWG 12-10 to 26-14, waterproof professional splicing kit.
IP67 waterproof heat shrink butt connectors in harsh environments
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3:1 adhesive heat shrink butt connectors with tinned copper barrels
Tinned copper barrel in a heat shrink butt connector
Crimping heat shrink butt connectors with a ratchet tool
150N pull test for a heat shrink butt connector
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Splice wire connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24.
Color-coded splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24.
Electrical splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24, 9-48A max current.

Heat Shrink Butt Connectors Kit AWG 26-10

$45.99 USD

Keep mixed-size splice jobs from slowing you down.
Build a practical stock of heat shrink butt connectors for repairs that vary in wire size.
• Crimp securely — copper barrels support conductive wire-to-wire connections with the correct.
• Seal after crimping — adhesive-lined heat shrink sleeves insulate the joint and help.
• Mixed-gauge options — use the selected kit’s size chart to match each.

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Item:330 PCS
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Workbench scene using heat gun wire connectors; precise heating shrinks sleeves on cables for sealed connections.
350W Mini Heat Gun $23.99
Haisstronica ratchet crimper for AWG 22-10 non-insulated terminals & heat shrink connectors, ANSI-compliant design
AWG 22-10 Ratchet Crimping Tool $30.99

Haisstronica electric wire crimper sealing waterproof heat shrink butt connectors beside organized terminal assortmentsHeat-gun guide for electric butt connectors; 1800W tool shrinks adhesive sleeves evenly, sealing splices outdoors.Clear sleeve reveals 99.9% copper barrel for low resistance; AWG print denotes ring terminal connector compatibility.Crimping ratchet compresses a blue heat shrink butt splice, forming a hex crimp and stable AWG22-10 wire connections.Heat Shrink Butt Connectors Kit AWG 26-10 provides 330PCS, 420PCS and 580PCS Haisstronica assortments for crimping, insulating and moisture-sealing automotive, marine, trailer and household wiring repairs. Each kit combines four color-coded butt-splice sizes with tinned copper barrels and 3:1 adhesive-lined heat-shrink sleeves.

330/420/580PCS Pack & Wire Size Guide

Connector Model Color AWG Published Max Current 330PCS Kit 420PCS Kit 580PCS Kit Material / Sealing
BHT-0.5 White AWG 26-24 9A 48PCS 100PCS 130PCS Tinned copper barrel; 3:1 adhesive-lined sleeve
BHT-1.25 Red AWG 22-16 19A 150PCS 170PCS 220PCS Tinned copper barrel; 3:1 adhesive-lined sleeve
BHT-2 Blue AWG 16-14 27A 100PCS 100PCS 160PCS Tinned copper barrel; 3:1 adhesive-lined sleeve
BHT-5.5 Yellow AWG 12-10 48A 32PCS 50PCS 70PCS Tinned copper barrel; 3:1 adhesive-lined sleeve
Total Mixed AWG 26-10 Match the circuit and conductor rating 330PCS 420PCS 580PCS Color-coded storage assortment

Pack quantities and current figures above are taken from the published product media. The connector rating does not override the conductor, circuit-protection or equipment manufacturer's limits.

Material, Sealing & Installation Checks

Published product media identifies a tinned copper barrel, a 3:1 adhesive-lined heat-shrink sleeve and IP67 protection when the connector is correctly installed. Final sealing depends on correct gauge selection, complete crimp compression, intact insulation and even heating. Use a regulated heat gun, keep it moving and avoid an open flame or continued heating after the tubing has fully recovered.

Browse the heat shrink butt connectors collection and the broader heat shrink connectors range. Complete the installation with an AWG 22-10 ratchet crimping tool and a 350W mini heat gun.

❓Which wire sizes are included in the kit?

All three pack options cover AWG 26-10 with white AWG 26-24, red AWG 22-16, blue AWG 16-14 and yellow AWG 12-10 connectors.

❓What is the difference between the 330PCS, 420PCS and 580PCS kits?

They contain the same four connector models in different quantities. The 330PCS kit contains 48 white, 150 red, 100 blue and 32 yellow; the 420PCS kit contains 100 white, 170 red, 100 blue and 50 yellow; the 580PCS kit contains 130 white, 220 red, 160 blue and 70 yellow.

❓Do heat shrink butt connectors require crimping?

Yes. The copper barrel must be mechanically crimped with the correct insulated-terminal die before the sleeve is heated and sealed.

❓How do I heat the connector without damaging it?

Use controlled hot air, rotate the splice and keep the heat source moving. Stop when the sleeve has recovered evenly and adhesive has sealed both ends.

Are these connectors waterproof?

The product media publishes IP67 protection when correctly installed. Gauge selection, crimp quality, sleeve recovery and adhesive sealing must all be complete for moisture resistance.

❓How to Choose the Correct Connector

  1. Confirm the conductor gauge before selecting by color: white AWG 26-24, red AWG 22-16, blue AWG 16-14 or yellow AWG 12-10.
  2. Select 330PCS for a compact mixed-size inventory, 420PCS for more white and yellow connectors, or 580PCS for the largest refill quantity across all four sizes.
  3. Check that each stripped conductor enters the copper barrel fully without folding strands or leaving bare copper outside the sleeve.
  4. Use the published current figure only after confirming the cable, fuse, equipment and installation environment are rated for the circuit.

❓How to Crimp and Heat Shrink

  1. Disconnect power, cut both wire ends square and strip only enough insulation for each conductor to reach the center of the barrel.
  2. Insert one conductor from each end and confirm both wire ends are fully seated.
  3. Place the metal barrel in the matching insulated-terminal crimp profile and make a complete crimp on each side.
  4. Perform a firm pull test, then apply controlled hot air while rotating the connector.
  5. Heat from the center toward both ends until the sleeve recovers evenly and adhesive seals appear at the edges. Allow the splice to cool before testing or restoring power.
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  • Delivery Time: 1-2 business days to The US and Canada. Delivery times may vary depending on your location and carrier conditions.
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    You may request a return within 30 calendar days of delivery. Items must be unused, in their original condition, and include all original packaging and accessories.
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    Contact us with your order number and photos. If the issue is due to our error, we will cover reasonable return shipping costs or provide an appropriate replacement.
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    Approved refunds are issued to your original payment method within 5 business days after inspection. Your bank may require additional processing time.
  • To start a return, email support@haisstronica.com with your order number and reason for return. Please obtain approval before sending anything back.
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Close-up of insulated wire connectors joining red, blue, and yellow wires

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Learn More About Porduct

  • High Quailty Copper Core: Core Heat shrink butt connectors use the copper core with high thickness, which is up to 0.5mm. Make connection project safer! High thickness copper core calls the attention of buyers.
  • High Quailty Heat Shrink: Translucent heat shrink tubing provides high tensile strength and resistance to stretch and mechanical damage. Thick barrel ensures strong crimp every time. The inner wall of heat-shrinkable tube has enough hot melt adhesive to ensure waterproof performance. Your wire will never slip out of these heat shrink butt connectors.
  • Application Areas: Application in areas such as automotive, watercraft, electrical and electronics industries, with 3 different sizes, So that repair work is much easier.
  • Compliant With All Relevant Standards: Our heat shrink butt connectors are compliant with ROHS, ISO 9001: 2008, SGS and CE standards.
  • Recognizable: Tubings of different colors with the mark of wire gauge are easy to recognize. Measure the wiring, and by checking the mark of wire gauge of the polyolefin tubing, you can choose the right connector very easily.

Ideal Applications for Haisstronica Heat Shrink Butt Connectors

  • Automotive Wiring Repairs & Installations:
    Use Haisstronica’s butt connectors with heat shrink to achieve weather-resistant, corrosion-proof splices in vehicle wiring harnesses, lighting systems, and electrical components.
  • Marine & Boat Electrical Connections:
    Protect your marine electrical connections from moisture and corrosion with our marine-grade butt connector heat shrink solutions, ideal for boats, yachts, and watersports equipment.
  • Residential & Commercial Electrical Projects:
    Achieve safer and cleaner connections for household wiring, industrial equipment, or commercial installations with these reliable butt connector wire solutions.

Why Professionals Trust Haisstronica Heat Shrink Butt Connectors

  • When working with electrical or automotive wiring, you need connectors that offer maximum protection, durability, and ease of installation. Haisstronica’s heat shrink butt connectors deliver industry-leading performance, creating airtight, waterproof seals and stable electrical connections that stand up to harsh environments and daily wear.
  • Secure your electrical connections with confidence using Haisstronica heat shrink butt connectors—the ideal solution for electricians, automotive technicians, and dedicated DIY hobbyists. Our heat shrinkable butt connectors provide superior insulation, unmatched durability, and reliable conductivity, ensuring long-lasting, professional-quality wiring every time.

Easy-to-Use Butt Connector Installation Process

  1. Insert the stripped wires securely into the connector barrel.
  2. Firmly crimp using a reliable crimping tool, ensuring a solid connection.
  3. Heat the shrink tubing with a heat gun or lighter until the tube seals tightly around the connection, providing exceptional insulation and moisture protection.


Use these heat-shrink butt connectors for compatible copper-wire splices in automotive accessories, marine and RV wiring, trailers, outdoor equipment, appliance leads and household low-voltage repairs. The straight butt-splice format joins two conductors end to end. Do not use a connector outside its marked AWG range, on energized wiring, or where the governing code or equipment manufacturer requires a different connector or installation method.
  • Haisstronica’s waterproof butt connectors deliver superior sealing performance, ideal for automotive and marine applications.
  • Our heat shrink butt connectors feature a robust polyolefin tubing lined with hot melt adhesive, creating an airtight, moisture-resistant seal around connections.
  • This waterproof barrier ensures your wires remain corrosion-free even in harsh marine or outdoor conditions. Whether you're repairing boat electronics or automotive wiring exposed to elements, our marine butt connectors guarantee reliable electrical performance.
  • Trust our industry-leading butt splice wire connectors to protect your connections from water damage, maintaining safe, stable electrical systems in any environment.
  • Designed to endure tough conditions, our heat shrink butt splice connectors offer exceptional stretch resistance and mechanical strength. The translucent polyolefin tubing in these butt connectors is engineered to withstand pulling, twisting, and vibration without compromising integrity.
  • Our butt splice connectors deliver secure, reliable crimp connections that remain intact even under heavy mechanical stress. Ideal for industrial machinery, automotive wiring, and equipment subject to movement, these butt connectors heat shrink effectively protect your wiring from mechanical damage.
  • Ensure the longevity of electrical connections with Haisstronica’s premium butt connector kit, crafted specifically for rigorous usage and lasting performance.
  • Achieve secure, durable connections with Haisstronica’s heat shrink butt connectors, featuring a powerful inner-wall adhesive.
  • Our advanced hot melt adhesive fully envelops wire connections upon heating, creating a sealed barrier that prevents slippage and ensures electrical stability.
  • Each heat shrink butt connector delivers a solid, vibration-proof bond, perfect for automotive, marine, and heavy-duty applications.
  • With our butt splice heat shrink connectors, rest assured your connections remain secure and insulated against external elements.
  • The adhesive ensures that once crimped and shrunk, your wire butt connectors provide exceptional reliability, keeping wires locked safely in place for long-term use.
  • Haisstronica butt connectors are versatile, making them ideal for multiple industries including automotive, marine, electronics, and DIY home projects.
  • Available in various sizes and colors, our butt splice connectors easily accommodate diverse wire gauges, simplifying identification and ensuring quick installation.
  • The clearly marked butt connector sizes make choosing the right connector straightforward, enhancing productivity and accuracy.
  • Whether repairing boat wiring, automotive harnesses, home appliances, or outdoor electrical systems, our comprehensive butt connector kit meets every requirement.
  • Experience convenience, reliability, and consistent quality with Haisstronica’s broad range of insulated and non-insulated butt connectors, tailored specifically for multiuse electrical applications.

High-Quality, Safer Butt Splices

Built around a thick 0.5 mm copper core, these Haisstronica heat shrink connectors turn every electrical butt splice into a solid, low-resistance joint. Each sleeve is engineered for clean solder butt splices and consistent butt splice crimps, keeping power flowing reliably in automotive, marine, and household circuits.

Durable Shrink Protection That Stays Put

Our translucent tubing turns these into true shrink butt connectors, combining high tensile strength with hot-melt adhesive that seals out moisture and abrasion. Once heated, your wire butts are fully encapsulated, so the connection won’t pull out, loosen, or corrode in demanding environments.

Easy Size & Color Identification

Color-coded barrels make it simple to pick the right piece at a glance—from compact butt end connectors to larger yellow butt sleeves and red butt splices for heavier gauges. Just match the printed gauge marks to your wire size and crimp with confidence in panels, harnesses, and junction boxes.

Installer-Friendly, Tool-Ready Design

Whether you prefer a dedicated but splice crimper or compact hand tools, these connectors are shaped for fast, repeatable terminations at any terminal butt location. For quick field repairs, they also pair well with semi-crimpless butt connectors, giving techs flexible options on boats, vehicles, or job sites.

Built for Pros, Clear for Beginners

If you’ve ever searched “what is butt splice” while planning a repair, this kit gives you the complete answer in your hand. From standard sleeves to niche terms like butt bullet and bullet butt, Haisstronica delivers a robust, pro-grade butt splice system that’s easy enough for DIYers and tough enough for daily shop use.

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