Best Crimp Butt Terminals in 2026

【High Success Rate】Upgraded to use exclusive material in the butt connectors to avoid shrink tubing melting before solder ring. The success rate of connecting wire has been greatly improved.

【Better Waterproof and Seal Performance】With IP67 water-resistant rating, after being heated, they shrink and water will not be able to go inside, preventing any short circuit issues. Widely used on marine projects.

【Time Saver and Simple Process】Solderless, crimpless, one-step solder and seal process for all your connections, much faster and easier than the old way.

Haisstronica solder seal wire connectors hot melt adhesive systems provide the right amount of adhesive,which cools,hardens,and reaches its bond strength within seconds,ensuring a weatherproof and long-lasting bond for your application.

With enough solder wrapping the wire to melt and flow,marine grade wire connectors forming a seal,which ensures long-lasting connections,especially for larger one.

With its EVA materials,the heat-shrink tube of solder seal wire connectors provide clear visibility of the soldering penetration and premium abrasion resistance for long-term reliability.

GOOD QUALITY MARINE GRADE WIRE TERMINATION:The Haisstronica heat shrink connectors kit includes ring,fork, spade,and heat shrink butt connectors.The right quality wire connectors,for the right job,is always worth expense.

99.9% PURE COPPER TINNED:Effectively prevent copper layer rust and then cause bad contact,anti oxidation prevent electrical sparks.Strong conductive.

EXTREMELY RELIABLE CRIMPING:The 3:1 heat shrink connector with adhesive lined will exude hot melt adhesive after being evenly heate,quickly shrink and adhesion to the insulation of the wire.Create a complete environmental seal.Waterproof,Wear-resistant.

EASY TO IDENTIFY- Easier to choose the correct heat shrink connector, different color coded tubing with wire gauge imprint provides easy identification.

WATERPROOF- Polyolefin tubing on the outside and hot melt adhesive inside provides excellent waterproof property. Polyolefin tubing reduces in size and adhesive flows inside the insulation when heating.

HIGH QUALITY- Thick barrel ensures strong secure crimping every time to prevent wire failure, increase current flow, decrease voltage drop, and reduce equipment downtime. Your wire will never slip out of the connector.

COMPLIANT WITH ALL RELEVANT STANDARDS:With Haisstronica 330PCS( A.W.G.:22-16 150PCS,16-14 100PCS,12-10 32PCS,26-14 48PCS) heat shrink waterproof wire connectors are compliant with ROHS, ISO 9001:2008, SGS, and CE standards.

HIGH-QUALITY COPPER CORE:Heat shrink butt connectors use a copper core with a higher thickness rating.This makes your connection project safer and better meets our customers’ quality needs!

HIGH-QUALITY HEAT SHRINK:Translucent heat shrink tubing provides high tensile strength and resistance to stretch and minimize mechanical damage.The thick barrel ensures a strong crimp every time.The inner wall of the heat-shrinkable tube has enough hot melt adhesive to ensure waterproof performance reliability.Your wire will never slip out of these heat shrink wire connectors.

WIREFY MOST VERSATILE CONNECTOR KIT - Ring, fork, hook, spade and butt splice heat shrink wire connectors are included in this multipurpose electrical connector kit. You will not run out of heat shrink wire connectors when working on your next wiring project.

DURABILITY AND WEATHER RESISTANCE - Thick copper barrel ensures a strong wire crimp every time. Your wire will never slip out of these connectors. Adhesive lined heat shrink tubing provides high tensile strength, as well as resistance to weather, stretch and mechanical damage. Prevent wire corrosion in your electrical connections.

EASE OF APPLICATION - Strip wire insulation, crimp terminal barrel with a wire crimper, and apply heat with a heat gun while rotating a connector. Heat shrink tubing will reduce in size and adhere to the wire. No soldering kit needed. Start making secure and durable connections in seconds.

STRONG CRIMPS - Thick, seamless butt connector barrels ensure super strong crimps, and prevent your wire from slipping out.

EXCELLENT CONDUCTIVITY - Pure copper ensures the highest conductivity. A thin layer of tin will protect your butt splices from corrosion.

A VARIETY OF SIZES - This versatile kit includes uninsulated butt splice connectors for 24 to 8 gauge wires.

PATENTED HAISSTRONICA TOOL CASE:The heat shrink connector kits including ring,fork,spade and heat shrink butt connectors.Most common size required for most projects.Each type and size of wire connectors has its own removable compartment,It can be easily carried to the work area without carrying the whole wire connectors set.Just pull out the wire connectors you need without worrying about mess with the whole tool kit.

STRENGTH MATTERS:A product is only as good as the materials it’s made from.The heat shrink wire connectors made from 99.9% pure copper tinned.Effectively prevent copper layer rust and then cause bad contact,anti oxidation prevent electrical sparks.Strong conductive,crimp cleanly and evenly.

BUILD LIKE A TANK:Heat shrink tubing is durable and puncture resistant.The 3:1 heat shrink connectors with adhesive lined will exude hot melt adhesive after being evenly heate,quickly shrink and adhesion to the insulation of the wire.Create a complete environmental seal.Waterproof,Wear-resistant.Give extra stability to the connections.

Complete kit includes 330 butt connectors, 1 crimping tool, and an organizer

3 Sizes of butt splice for customizing your DIY wiring work style

Waterproof, marine grade and heat shrink ensure electrical connection safety

Good Assortment:This kit include 420pcs non-insulated butt connectors for 24-8 gauge.Applied in auto, ship, DIY, etc.

High-Quality Tinned Red Copper:The copper uses tinned copper,which is easier to flatten and grasp the wires,the wires will not slip out of the connector.

Tight And Firm Connection:Solidly made results in super strong connections.Built in separator,keep the incoming wires align.

UNIQUE COPPER CORE→680pcs heat shrink butt connectors use a copper core with a higher thickness rating. Copper barrel ensures strong secure crimping every time, providing minimal voltage drop, high current flow, and less heat which makes your connection project safer and better and meets our customers’ quality needs!

SPECIAL WATERPROOF HEAT SHRINK→Translucent heat shrink tubing provides high tensile strength and resistance to stretch and minimize mechanical damage.The thick barrel ensures a strong crimp every time so that your wire will never slip out of these heat shrink butt connectors. Also, the inner wall of the heat-shrinkable tube has enough hot melt adhesive to ensure waterproof performance reliability.

EASY TO IDENTIFY→You could easily distinguish these butt connectors through their different colors and wire gauge markings and you could quickly choose the right connector.

Package Includes: 500 Yellow heat shrink butt connectors that can be used on wire AWG from 12 to 10.

Tinned Copper Core: Butt connectors use a heavy-duty copper core, strong crimp, higher conductivity.

Solderless Crimping: Insert the wires to be connected, crimp both sides with crimping pliers, and then heat with a heat gun.