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Color-coded Haisstronica connector butt assortments deliver Heat-shrink electrical connectors that meet major safety standards, using thick copper cores and butt connectors heat shrink to create secure, waterproof joints for automotive, marine, home, and underground wiring.
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Brand: Haisstronica
Color: Yellow*140, Blue*220, Red*300
Awg: 12-10*140,16-14*220, 22-16*300
Contact Material: Copper
Connector Type: Butt Splice
Insulation Material: Nylon
Product Dimensions: 0.39 x 0.39 x 0.5 inches; 3.92 Pounds
Features:
Quick Secure Connections
Perfect for outdoor projects, it keeps your connections safe from moisture and corrosion.
Guaranteed Weatherproof
Its innovative design ensures a secure bond every time, making your projects smooth and efficient.
Easy To Use & Saves Time
Save time and effort with connectors that simplify your tasks without compromising quality.
Enhanced Safety
Reduce burn & hazard risks to ensure a safer working environment, while being 100% safe for electronics.
Fits All Projects
From automotive repairs to home improvements, it’s the go-to solution for any wiring challenge.
Lasting Reliability
With high-quality materials and construction, it delivers reliable connections that stand the test of time.
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.
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.
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.
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.
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.
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.
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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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.
