Best Butt Terminals of 2026

Harvey Wall Avatar
Harvey Wall
Last Updated: 2 Feb 2026

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Butt terminals are a type of electrical connector commonly used in automotive and marine applications to join two wires together. They are designed to provide a secure and reliable connection that can withstand harsh environments and vibrations. Butt terminals come in a variety of sizes and styles to accommodate different wire gauges and insulation types. They are easy to install and can be crimped onto the wire using a special tool. Butt terminals are a cost-effective solution for connecting wires and are widely available from electrical suppliers.

At a Glance: Our Top Picks

Kuject 50PCS Waterproof Heat Shrink Connectors Cover #TOP 1
Kuject 50PCS Waterproof Heat Shrink Connectors
ftb score rating icon 9.8
RUNCCI-YUN 100PCS Waterproof Heat Shrink Connectors Cover #TOP 2
RUNCCI-YUN 100PCS Waterproof Heat Shrink Connectors
ftb score rating icon 9.7
Kuject 120PCS Waterproof Solder Seal Connectors Cover #TOP 3
Kuject 120PCS Waterproof Solder Seal Connectors
ftb score rating icon 9.5

Top 6 Butt Terminals

Kuject 50PCS Waterproof Heat Shrink Connectors

WT050
Transparent
50PCS
Kuject 50PCS Waterproof Heat Shrink Connectors Cover
Kuject 50PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Butt Connector Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint

The Kuject Waterproof Connectors are designed to save you time and effort, eliminating the need for soldering or crimping. With just a heat gun, you can quickly complete your connections, making the process faster and easier than traditional methods. These connectors are perfect for tight spaces, allowing you to bend them after connection without the need for additional tools. They also feature enhanced waterproof performance due to two adhesive rings, ensuring better protection against moisture. Additionally, they boast high temperature resistance, preventing shrink tubing from melting prematurely during use.

What We Like
Time-saving installation
Ideal for tight spaces
Enhanced waterproof protection
High temperature resistance

RUNCCI-YUN 100PCS Waterproof Heat Shrink Connectors

R729
RUNCCI-YUN 100PCS Waterproof Heat Shrink Connectors Cover
RUNCCI-YUN 100PCS Heat Shrink Wire Connector Butt Terminals Kit, Crimp Connectors Waterproof Insulated Electrical Terminals Marine Automotive Cable(3 Colors / 3 Sizes)(red blue yellow)

The RUNCCI-YUN Butt Connectors kit includes 100 pieces in three sizes and colours, suitable for various wire gauges. Each connector features a heat shrink design with waterproof sealing, ensuring that your cables stay secure and protected, even in wet conditions. The premium quality copper core minimises voltage drop and enhances current flow, making your connections safer. With compliance to electrical standards, you will find that these connectors are perfect for automotive, marine, and electronic projects, providing convenience and reliability.

What We Like
Waterproof and reliable sealing
High-quality copper core
Compatible with various applications
Multiple sizes included

Kuject 120PCS Waterproof Solder Seal Connectors

SS120
120PCS
Kuject 120PCS Waterproof Solder Seal Connectors Cover
Kuject 120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint

The Kuject Solder Seal Connectors offer a convenient solution for electrical connections, requiring only a heat gun for use. This time-saving feature eliminates the need for soldering or crimping, making it ideal for tight spaces where traditional methods may prove difficult. The connectors also boast exceptional waterproofing due to the dual hot melt adhesive rings, ensuring reliable performance in wet conditions. Moreover, they are designed to withstand high temperatures, preventing the shrink tubing from melting prematurely, which enhances safety and reliability.

What We Like
Time-saving installation
Ideal for tight spaces
Excellent waterproof performance
High temperature resistance
#TOP 4

YIXISI 70 PCS Waterproof Heat Shrink Connectors

YE0202WWA07
BHT - 70pcs
YIXISI 70 PCS Waterproof Heat Shrink Connectors Cover
YIXISI 70 PCS Heat Shrink Butt Connectors Kits, Waterproof Heat Shrink Electrical Wire Butt Terminals, Waterproof Electrical Wire Terminals, Marine Automotive Crimp Terminals,10-26 AWG

The YIXISI Heat Shrink Connectors offer a comprehensive kit of 70 pieces, including red, blue, and yellow connectors to suit various wire sizes. Made with quality materials, these connectors feature a thick copper barrel that resists corrosion, ensuring a secure crimp every time. The double wall design effectively prevents water and moisture from compromising your connections, making them ideal for use in challenging environments. With easy-to-use colour-coded tubing and wire gauge imprints, you can quickly identify the right size for your project, enhancing convenience and efficiency.

What We Like
Corrosion-resistant copper barrels
Waterproof double wall design
Colour-coded for easy identification
Versatile for various applications
#TOP 5

sourcing map K2/UY2 Crimp Terminal Connectors Kit

a24052700ux1200
sourcing map K2/UY2 Crimp Terminal Connectors Kit Cover
sourcing map Wire Connectors Assortment Kit, K2/UY2 Crimp Terminal Connectors Assortment Kit, Butt Connectors, for Waterproof Telephone Line Data Phone Wire Connector, Orange, 20pcs

The sourcing map Terminal Connectors Kit includes K2/UY2 crimp terminals suitable for wire diameters of 0.4mm to 0.9mm. This makes it ideal for connecting telephone and network cables easily. You won't need to remove the insulation from your wires; simply insert them into the connectors and press with pliers. The bright, transparent design ensures visibility, while the moisture-proof and heat-resistant materials provide durability and safety during use.

What We Like
Easy to use without stripping wires
Durable and moisture-proof design
Suitable for various wire sizes
High crimping success rate
Versatile for multiple applications
#TOP 6

CTRICALVER Waterproof Heat Shrinkable Wire Butt Joints

M048
Set3
CTRICALVER Waterproof Heat Shrinkable Wire Butt Joints Cover
CTRICALVER welded and sealed wire joints, 38 waterproof heat shrinkable butt joints, wire terminals, marine insulated butt joints (blue)

The CTRICALVER Wire Butt Joints offer a safe and easy way to connect wires without crimping. You simply insert the peeled wire into the solder sleeve and heat it to create a strong connection. Their transparent sleeves allow you to check the connection clearly, ensuring precision. These joints feature a double wall design with a polyolefin tube outside and hot melt adhesive inside, giving you excellent waterproofing and insulation. This design helps protect your wires from corrosion, especially in damp settings, making them reliable for many uses.

What We Like
No crimping needed
Transparent sleeves for inspection
Waterproof and insulated
Prevents wire corrosion
Easy to use with heat
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do you remove a butt connector?

In most cases, connectors either hold the wire in with a small metal prong or they are crushed onto the wire. With a gentle tug, the wire usually pulls out of the connector. Place a pair of wire cutters next to the connector and cut the wire to remove it from the connector.

2. What are connectors and terminals?

Terminals and connectors are any of the various types of electrical wire connectors used to end a wire or cable and connect it to an electrical system or terminate it completely.

Terminals of a receptacle are permitted for use with certified field-installed crimped-on wire connectors or an assembly, if so identified by the manufacturer. A receptacle may also be provided with conductor leads with factory-installed crimped-on connectors.

Editor's Notes

During our butt terminal research, we found 306 butt terminal products and shortlisted 6 quality products. We collected and analyzed 547,974 customer reviews through our big data system to write the butt terminals list. We found that most customers choose butt terminals with an average price of £20.00.

The butt terminals are available for purchase. We have researched hundreds of brands and picked the top brands of butt terminals, including Kuject, RUNCCI-YUN, YIXISI, sourcing map, CTRICALVER.

Written by
Harvey Wall Avatar

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.