200PCS red butt splice wire connectors with corrosion-resistant design.
IP67 waterproof heat shrink butt connectors in harsh environments
How to install heat shrink butt connectors
3:1 adhesive heat shrink butt connectors with tinned copper barrels
Tinned copper barrel in a heat shrink butt connector
150N pull test for a heat shrink butt connector
Heat shrink butt connector strength comparison
Crimping heat shrink butt connectors with a ratchet tool
Heat shrink wire connectors set, yellow BHT-5.5, blue BHT-2, pink BHT-1.25, white BHT-0.5, AWG 12-10 to 26-24.
HAISSTRONICA butt splice connectors BHT AWG 26-10, professional electrical splicing.
Electrical splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24, 9-48A max current.
Blue HAISSTRONICA butt connectors BHT, AWG 26-10, waterproof electrical splicing tools
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.
200PCS Haisstronica heat shrink butt splice kit for AWG 22-10 wires.
Haisstronica 500PCS white marine butt connectors with ISO certification.
Haisstronica 200PCS blue waterproof butt connectors for outdoor wiring.
Haisstronica 120PCS yellow heat shrink butt connectors for AWG 12-10 cables.
Blue HAISSTRONICA heat shrink connectors, BHT-2, AWG 16-14, 3:1 ratio, bulk 1000PCS packaging.
Yellow HAISSTRONICA waterproof butt splices, BHT-5.5, AWG 12-10, CE/RoHS, heavy-duty 50PCS.
White HAISSTRONICA electrical butt terminals, BHT-0.5, AWG 26-24, heat shrink, IP67 waterproof.
Pink HAISSTRONICA butt splice connectors, BHT-1.25, AWG 22-16, tinned copper, solder-friendly, 100PCS.
HAISSTRONICA yellow heat shrink butt connectors, BHT-5.5, AWG 12-10, 3:1 ratio, Polyolefin, CE/ISO/SGS certified.
HAISSTRONICA blue heat shrink butt connectors BHT-2, AWG 16-14, 3:1 ratio, Polyolefin, CE/ISO/SGS certified.
Yellow HAISSTRONICA electrical butt connectors BHT-5.5, AWG 12-10, 3:1 ratio, Polyolefin, IP67 waterproof.
HAISSTRONICA solder butt connectors BHT-1.25, AWG 22-16, 3:1 shrink ratio, tinned copper, 500PCS.
HAISSTRONICA blue heat shrink butt connectors BHT-2, AWG 16-14, 3:1 ratio, Polyolefin, CE/ISO/SGS certified.
HAISSTRONICA butt splice wire connectors, blue storage case, AWG 16-10, 3:1 ratio, professional electrical tools.
Stronica heat shrink butt connectors in blue case, 330pcs, color-coded AWG 12-10 to 26-14, waterproof professional splicing kit.

50-1000PCS Heat Shrink Butt Connectors AWG 26-10

$28.99 USD

Buy the size you use. Protect the splice you make.

Stock the connector that matches your wiring, not an assortment you rarely use.

• 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.
• Flexible replenishment — choose the marked gauge and pack quantity.

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Item:Yellow AWG 12-10
PCS:120 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

Heat-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.50-1000PCS Heat Shrink Butt Connectors AWG 26-10 create insulated inline wire splices for automotive, marine, trailer, equipment, and workshop wiring. Choose a verified single-color or mixed pack from 50 to 1000PCS according to conductor gauge and project volume.

Connector and Pack Guide

Connector Type AWG Color Pack Quantity Material/Sealing Application
BHT-0.5 heat shrink butt connector 26-24 White 120 or 500PCS Tinned-copper barrel; 3:1 adhesive-lined polyolefin sleeve Fine signal and low-current wiring
BHT-1.25 heat shrink butt connector 22-16 Red 100, 120, 500, or 1000PCS Tinned-copper barrel; 3:1 adhesive-lined polyolefin sleeve Small accessories and control wiring
BHT-2 heat shrink butt connector 16-14 Blue 100, 120, 500, or 1000PCS Tinned-copper barrel; 3:1 adhesive-lined polyolefin sleeve Automotive, marine, and trailer wiring
BHT-5.5 heat shrink butt connector 12-10 Yellow 50, 120, 250, or 500PCS Tinned-copper barrel; 3:1 adhesive-lined polyolefin sleeve Higher-current accessory wiring
Mixed heat shrink butt connector pack 26-10 Mixed 80, 120, 200, 330, 420, 580, or 660PCS Assorted tinned-copper connectors with heat-shrink sealing sleeves Multi-gauge repair and maintenance

How to Choose

Match the stripped conductor to the AWG range first, then select the corresponding color and a pack quantity that fits the project. Use white for AWG 26-24, red for AWG 22-16, blue for AWG 16-14, and yellow for AWG 12-10. Choose a mixed pack when the job includes several verified wire gauges.

How to Use

  1. Disconnect power and strip both wire ends without cutting conductor strands.
  2. Select the connector that matches the conductor gauge and insert one wire into each side of the metal barrel.
  3. Crimp each side with the correct heat-shrink terminal die, then perform a pull test.
  4. Apply controlled heat from the center outward while rotating the connector until the sleeve recovers and the ends seal.
  5. Allow the splice to cool completely before testing or restoring power. Do not use an open flame or continue heating after the sleeve has fully recovered.

 

Wire range chart for laser marking wire stripper adjustment

❓What AWG ranges do these heat shrink butt connectors support?

The available connector sizes cover AWG 26-24, AWG 22-16, AWG 16-14, and AWG 12-10. Select by conductor gauge, not by outer insulation diameter.

❓Do heat shrink butt connectors require crimping?

Yes. Crimp the metal barrel with the correct die before heating the sleeve. Standard pliers can produce an uneven or weak connection.

❓How do I heat the sleeve without damaging it?

Use moderate, controlled airflow, keep the heat source moving, and rotate the connector. Stop when the sleeve has recovered and the sealing material is visible at the ends.

❓Can it be used in saltwater?

Yes. These marine butt connector style terminals are designed for harsh, wet environments, including saltwater, as long as they’re crimped and heated correctly. The thick copper core and heat shrink but connector design create a sealed, waterproof butt connector that protects the joint from corrosion in boat, dock, and trailer wiring.

❓What tools do I need?

For best results you’ll need a good wire stripper, a quality crimper such as butt splice crimpers or other tools for crimp wire connectors, and a heat source (heat gun is recommended). Used together with your wire connectors kit, these tools ensure each butt connector wire is properly crimped and fully shrunk for a safe, long-lasting connection.

❓What temperature range can it handle?

The butt connector heat shrink tubing is designed for typical automotive and marine wiring environments, from cold outdoor conditions to warm engine compartments. As long as the shrink butt connector is fully recovered and sealed, the joint will tolerate normal temperature swings without the wire pulling out; for exact operating limits, refer to the product datasheet or electrical standards used in your region.

❓Marine installation checklist

For a reliable boat or watercraft install, use only tinned or clean copper conductors, match wire gauge to the markings on the wire terminal connectors, and choose the correct size butt connectors wire from your butt connectors kit. Make solid wire connectors crimp with one firm squeeze (no partial crimps), then apply heat until the heat shrink but connector is fully tight and adhesive is visible at both ends. Finally, support the harness with clamps or loom so the buttsplices aren’t taking constant flex or strain.

❓Does it come with a storage case?

Packaging can vary by wire connectors kit and quantity option. Some sets of butt connectors electrical are supplied in an organized plastic box to keep each butt connector electrical size separate, while others may ship in polybags. Please check the specific product listing or photos to see whether your chosen option includes a storage case.

❓Marine installation tips

When using these on boats, always route cables above bilge water where possible, avoid sharp bends next to the butt splice wire connector, and stagger multiple wire butt splices along the harness to reduce bulk. Use weatherproof butt connectors or heat shrink solder butt connector variants in the wettest zones, and add extra abrasion protection (loom or tape) anywhere the wiring might rub on metal or fiberglass.

❓Can it be used in saltwater?

Yes, the connectors are suitable for saltwater marine use when installed correctly. Fully crimp each butt connect or butt splice with the proper size die, then heat until the adhesive flows so you get a true waterproof butt connector seal. In very harsh environments, periodically inspect your electrical butt splices and shrink butt connector joints for mechanical damage and re-seal or replace any compromised connections.
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Learn More About Porduct

  • GREAT VALUE: It is an ideal choice for factories, enterprises, schools, or stores where butt connectors are used frequently. Haisstronica waterproof wire connectors comply with ROHS, ISO 9001:2008, SGS, and CE standards.
  • 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.

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.

Perfect Applications for Haisstronica Butt Splice Connectors

  • Automotive Wiring Solutions:
    Our automotive-grade butt connector heat shrink products protect vehicle wiring harnesses, lighting circuits, and accessory installations from corrosion, vibration, and harsh environmental exposure.
  • Marine & Outdoor Electrical Work:
    Use Haisstronica’s waterproof heatshrink butt connectors for secure electrical connections on boats, trailers, recreational vehicles, and outdoor wiring projects that demand dependable protection against water and weather conditions.
  • Home & Industrial Electrical Installations:
    Complete household wiring, appliance repairs, lighting installations, and industrial maintenance with ease, using reliable and robust wire butt connectors designed for safe, permanent connections.


Use these heat shrink butt connectors for compatible inline splices in cars, boats, trailers, outdoor equipment, appliances, control wiring, and workshop repairs. The crimped metal barrel provides the electrical connection, while controlled heating shrinks the sleeve and activates the internal seal. Do not use a connector outside its listed AWG range or where the equipment manufacturer requires another splice 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 Heat Shrink Butt Splice Connectors for Secure Wiring

Built for dependable connections in automotive, marine, and general electrical projects, Haisstronica heat shrink butt connectors use a 0.5 mm high-quality copper core to keep your wire butts safe, conductive, and stable over time. Whether you crimp with a dedicated but splice crimper or standard crimp tool, each terminal butt is engineered to form a strong electrical butt splice that resists pull-out, vibration, and corrosion.

Durable Shrink Tubing for Waterproof, Long-Lasting Joints

Each connector features translucent shrink butt connectors with thick walls and an adhesive-lined interior, delivering both mechanical strength and waterproof sealing in one step. Once crimped and heated, the tubing grips the insulation firmly so the wire will not slip out, giving you a clean alternative to crimpless butt connectors or improvised butt end connectors. This design makes solder butt splices and sealed repairs faster, cleaner, and far more reliable in harsh environments.

Easy Size Identification with Color-Coded Tubes

Haisstronica connectors are color coded and clearly marked with wire gauge on the polyolefin tubing, so you can spot red butt splices, yellow butt sizes, and other ranges at a glance. Simply measure your conductor, match the printed gauge, and choose the correct connector butt in seconds—no guessing, no mismatched wire butts, and fewer wiring errors on the job.

Ready for Professional Auto, Marine, and Electrical Work

From quick but splice crimps on trailer wiring to long runs in boats, vehicles, and equipment, these shrink butt connectors are designed to simplify repairs and upgrades. With three commonly used sizes in each wire connectors kit, you can handle most field tasks without hunting for extra parts, whether you’re replacing a single butt connector wire or refreshing an entire harness.

Certified Quality You Can Trust

Compliant with ROHS, ISO 9001:2008, SGS, and CE standards, Haisstronica heat shrink but connector solutions are built for electricians, technicians, and serious DIY users who demand consistent quality. If you’ve ever asked what is butt splice done right, this is it: a color-coded, crimped, sealed connection that keeps power flowing and protects every joint for the long term.

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