--- product_id: 234503076 title: "Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring" brand: "kuject" price: "249.63 DT" currency: TND in_stock: true reviews_count: 5 category: "Kuject" url: https://www.desertcart.tn/products/234503076-kuject-120pcs-solder-seal-wire-connectors-heat-shrink-butt-connector store_origin: TN region: Tunisia --- # Copper contacts for superior conductivity Waterproof insulation for all-weather use Heat shrink tech for secure seals Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring **Brand:** kuject **Price:** 249.63 DT **Availability:** ✅ In Stock ## Summary > 🔧 Seal the deal with every connection—connect like a pro, last like a legend! ## Quick Answers - **What is this?** Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring by kuject - **How much does it cost?** 249.63 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/234503076-kuject-120pcs-solder-seal-wire-connectors-heat-shrink-butt-connector) ## Best For - kuject enthusiasts ## Why This Product - Trusted kuject brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **120-Piece Power Pack:** Bulk kit designed to keep your projects moving without constant restocking. - • **Built to Brave Extremes:** Operates reliably from -40°C to 105°C, perfect for any climate or environment. - • **Universal Compatibility:** Ideal for automotive, marine, truck, boat, and trailer wiring—one kit, endless possibilities. - • **Durability You Can Trust:** Copper core and polyolefin insulation ensure long-lasting, corrosion-resistant performance. - • **Effortless Pro-Grade Installation:** Heat-activated shrink seals in seconds—no fuss, just flawless connections. ## Overview The Kuject 120PCS Solder Seal Wire Connectors combine high-quality copper contacts with heat shrink polyolefin insulation to deliver waterproof, durable, and reliable electrical connections. Rated for extreme temperatures (-40°C to 105°C), this versatile 120-piece kit is perfect for automotive, marine, and trailer wiring projects, ensuring professional-grade performance and easy installation every time. ## Description Experience reliable electrical connections with the Kuject 120PCS Solder Seal Wire Connectors. These heat shrink butt connectors are designed for waterproof, insulated electrical butt terminals, perfect for automotive, marine, boat, truck, and trailer wiring. Featuring copper contacts and polyolefin insulation, they offer a temperature rating of -40 to 105°C, ensuring durability and performance in various environments. The SS120 model comes with 120 pieces, providing a versatile solution for your wiring needs. Review: I'm happy thank you - Very good Review: Must have - This thing has fixed my car and saved my car. Tried using it on headphones with little success but the connection quality is really good. The quality of it overall is really good and it's easy and quick to install. A massive value for your buck but melting it is a little hard. It's durable though I can give you credit for that and it takes a minute or two for the thing to melt. ## Features - Durable Construction: Crafted with high-quality copper and polyolefin insulation for long-lasting performance and reliable connectivity - Versatile Use: Ideal for various applications like automotive, marine, boat, truck, and trailer wiring, ensuring a secure and waterproof connection - Easy Installation: Heat shrink butt connectors simplify installation, providing a quick and efficient solution for electrical wiring needs - Wide Temperature Range: Operates effectively in extreme temperatures, from -40°C to 105°C, ensuring consistent performance in various environments - Robust Design: Features butt splice connectors and butt terminals, providing a strong and secure connection for your electrical wiring projects ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B073RMRCC3 | | Best Sellers Rank | #201,756 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Butt Terminals | | Brand | Kuject | | Brand Name | Kuject | | Connector Type | Butt Splice | | Contact Material | Copper | | Country of Origin | USA | | Customer Reviews | 4.5 out of 5 stars 25,182 Reviews | | Insulation Material | Polyolefin | | Insulation Material Type | Polyolefin | | Item Weight | 109 g | | Manufacturer | Kuject | | Model Number | WT001 | | Part Number | WT001 | | Temperature Rating | 125 degree celsius | | Terminal | Butt Terminal | | Terminal Type | Butt Terminal | ## Product Details - **Connector Type:** Butt Splice - **Contact Material:** Copper - **Insulation Material:** Polyolefin - **Terminal:** Butt Terminal - **Brand:** Kuject ## Images ![Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring - Image 1](https://m.media-amazon.com/images/I/91RK1o2NnlL.jpg) ![Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring - Image 2](https://m.media-amazon.com/images/I/7173hy3S81L.jpg) ![Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring - Image 3](https://m.media-amazon.com/images/I/81PQ+3wQTBL.jpg) ![Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring - Image 4](https://m.media-amazon.com/images/I/81WGnOErAKL.jpg) ![Kuject 120PCS Solder Seal Wire Connectors, Heat Shrink Butt Connector Waterproof Insulated Electrical Butt Terminals Wire Splice for Automotive Marine Boat Truck Trailer Wiring - Image 5](https://m.media-amazon.com/images/I/81wYBvZFr0L.jpg) ## Questions & Answers **Q: are wire connectors the same thing as butt connectors?** A: Dear Customer,  These are solder seal wire connectors, rather than butt connectors. This is the heat shrink butt connector here: https://www.amazon.com/dp/B07B518GCJ. You can check they are difference via the link above. For let you know their difference eaiser, we compare these two kinds of connectors from 4 aspects as follow:  1. Simplicity of Operation. For joining the wire with heat shirnk butts, you need a heat gun and plier, but for the solder seal coneecotrs, you just need a heat gun, as there is no need to crimp. So, the solder seal connector will be easier to use.  2. Waterproof Resistance. Both of them are waterproof, but there are two hot melt waterproof adhesive rings in the solder seal connectors, which will make it get a better waterproof and seal performance.  3. Flexibility of Use in The Confined Space. The solder seal connectors can be bent after connection and just need a heat gun to control the temperature to finish the joint, so it is more flexable and eaier when joining wire in the confined space.  4. Price. On Kuject, 210Pcs heat shrink butts is $19.99 ($1 for 10 piece) , and 120Pcs solder seal wire connectors is $16.99($1.42 for 10 piece) . The price is cheaper for every piece of the heat shrink butt connectors.  In conclusion, the solder seal connectors have a better performance than the heat shrink butts although it is a little expensive. So, we will recommend to use the solder seal connectors in most case, but it still depend on your needs. Besides, there are two kinds of butt connectors in the market: crimp butt connector & heat shrink butt connector. Maybe you refer to the crimp butts, so we also talk about the crimp butt connector here. The appearance of crimp butt is almost same as the heat shrink butt, but the tube outside of crimp butt connector is made by nylon, so they can not be heat shrinked and not waterproof, which can not be used outdoor or humid area, just only can use indoor and dry space.  These are the introduction of the three type of connectors above, hope our answer help you. Best wishes,  Kuject customer serivce team **Q: Photo w/ all the connectors lying outside the box shows about 25 of 12/10 connectors but the box/label shows only 10 are provided - which is correct?** A: There are only 10, the first photo of 25 is dishonest. **Q: Are these connectors UL listed?** A: What is UL certified mean?-UL Certified. A certificate, issued to a manufacturer for one of its products, which indicates that the product has been tested in the US by the Underwriters Laboratories, Inc. (UL) and has met UL requirements. What you should know about UL certification?-UL Certification means that a product has undergone rigorous testing to ensure its safety standards are up-to-date. UL provides a number of services for a business—including validating, testing, inspecting, auditing, and certifying products and various businesses around the world. What is the cost to be UL Certified?-The fee, paid to UL, is often in the range between US$5,000 to 15,000. Then again, this is for he services provided by UL, and not including product development costs. China Imports -UL (Underwriter Laboratories) develops electronics safety standards for the United States, and provide related testing, certification and auditing services.- Unlike the EU, where importers must comply with a set of harmonized electronics safety standards – American electronics importers are free to choose which standards to comply with.-UL standards are developed for specific electronic products, or components, such as cords, batteries and plugs. **Q: I need to join wires when installing the new radio for my car, is it safe and reliable for using these kind of self-solder wire connectors?** A: Dear Customer, Our item is IATF16949:2016 Listed, this is a certification of International Automotive Task Force. Automobile company like Ford, General Motors and Chrysler Corporation require that only product which go through the certification IATF16949:2016 can be used as parts to repair their cars, so you can use our connectors at ease. Besides, compare to the tradition method that wiring with the solder iron, using our self-solder wire connectors will be much faster and easier, all you need is just a heat gun to heat the connectors. Best wishes, Kuject customer service team ## Customer Reviews ### ⭐⭐⭐⭐⭐ I'm happy thank you *by R***A on 18 June 2026* Very good ### ⭐⭐⭐⭐⭐ Must have *by E***N on 19 December 2024* This thing has fixed my car and saved my car. Tried using it on headphones with little success but the connection quality is really good. The quality of it overall is really good and it's easy and quick to install. A massive value for your buck but melting it is a little hard. It's durable though I can give you credit for that and it takes a minute or two for the thing to melt. ### ⭐⭐⭐⭐⭐ Connection seems excellent to me. *by A***R on 18 December 2024* Used the smaller sizes. I needed a little more heating than I expected, but then I had my work to do outside. In the wind, 10 degrees C outside. Connection seems excellent to me. ## Frequently Bought Together - Kuject Heat Shrink Solder Seal Wire Connectors Kit 120PCS, Waterproof Butt Connector Heat Shrink Electrical Terminals, Insulated Solderless Wiring Splice Connectors for Marine Automotive Boat Truck - SEEKONE Mini Heat Gun, 350W 2-Temp Settings 500℉ & 842℉（260℃& 450℃） Fast Heat Hot Air Gun Tool with Reflector Nozzle and 4.9Ft Long Cable Overload Protection for Crafting, Vinyl Wrap and Shrink Tubing - Eventronic 400 Pcs Heat Shrink Tubing Kit-3:1 Ratio Adhesive Lined,Marine Grade Shrink Wrap - Industrial Heat-Shrink Tubing - Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/234503076-kuject-120pcs-solder-seal-wire-connectors-heat-shrink-butt-connector](https://www.desertcart.tn/products/234503076-kuject-120pcs-solder-seal-wire-connectors-heat-shrink-butt-connector) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-20*