Solder wire connectors HAISSTRONICA 340PCS 12-10 to 22-18 AWG. Color-coded, transparent storage case with AWG labels.
Step-by-step guide: Strip, twist, and heat-seal wires with Haisstronica solder butt connectors.
Haisstronica solder but connectors prevent moisture in confined spaces for reliable joints.
Soldered and glued waterproof connections using Haisstronica solder wire connectors.
Haisstronica solder connectors certified by UL, CE, SGS for industrial safety.
Fast workflow soldering butt connector: use 1800W heat gun, reach 842°F, make sealed splice in about 10 seconds.
How to use solder butt connectors: insert stripped wires, heat with gun until solder ring melts for a strong bond.
Motorcycle wiring repaired using connectors; compare heat tools with solder sticks; reliable sealed connection in rain.
Haisstronica 200PCS green heat shrink and solder with waterproof adhesive sealing.
Haisstronica 200PCS blue solder heat shrink for durable cable splicing.
Haisstronica 150PCS yellow solder seal connectors (AWG 12-10), SGS/UL certified.
Haisstronica 400PCS white solder shrink connectors with heat-activated waterproof sealing.
Haisstronica 400PCS red solder terminals for waterproof electrical joints.
Solder butt connectors - HAISSTRONICA Red SST-R, AWG 22-18, 1500pcs. CE/SGS, 2:1 shrink ratio.
Waterproof electrical connectors - HAISSTRONICA White SST-W, AWG 26-24, 500pcs. SGS certified.
Heat shrink butt connectors - HAISSTRONICA Yellow SST-Y, AWG 12-10, 250pcs. CE/RoHS compliant.
Heat shrink solder connectors - HAISSTRONICA Red SST-R, AWG 22-18, 100pcs. CE/RoHS, 2:1 shrink.
Heat shrink butt connectors - HAISSTRONICA Yellow SST-Y, AWG 12-10, 50pcs. CE/RoHS compliant.
Waterproof wire connectors - HAISSTRONICA Green SST-G, AWG 18-16, 1000pcs. Polyolefin, SGS certified.
Solder wire connectors - HAISSTRONICA Green SST-G, AWG 18-16, 500pcs. CE/ISO, 2:1 ratio.
Solder seal connectors - HAISSTRONICA Blue SST-B, AWG 16-14, 500pcs. Polyolefin, CE/ISO certified.
Waterproof electrical connectors (500PCS, AWG 12-10) by Haisstronica, CE/SGS certified.
Haisstronica solder seal wire connectors (1000PCS) for AWG 12-10 to 26-24, ideal for industrial wiring.
Haisstronica solder seal wire connectors (1000PCS) for AWG 12-10 to 26-24, ideal for industrial wiring.
Haisstronica weatherproof wire connectors (180PCS) for marine and outdoor use.
240PCS waterproof connectors with heat shrink technology for harsh environments.
Haisstronica solder butt connectors (340PCS) for waterproof and durable terminations.
350PCS solder connectors by Haisstronica, compatible with AWG 12-10 to 26-24.
120PCS waterproof solder wire connectors for AWG 12-10 to 26-24 by Haisstronica.
Solder and seal wire connectors Weatherproof HAISSTRONICA - 180PCS (AWG 12-26).
Heat shrink solder connectors HAISSTRONICA - 200PCS (AWG 12-26). Industrial-grade.
Solder wire connectors HAISSTRONICA - 220PCS (AWG 12-26). Red/white terminals.
Waterproof wire connectors HAISSTRONICA - 260PCS (AWG 12-26). Compact design.
Solder heat shrink splice connectors HAISSTRONICA - 300PCS (AWG 12-26). Blue/yellow.
Solder and seal wire connectors HAISSTRONICA - 330PCS (AWG 12-26). Transparent.
Heat shrink solder connectors HAISSTRONICA - 350PCS (AWG 12-26).
Solder wire connectors HAISSTRONICA - 380PCS (AWG 12-26). heat-shrink design.
Waterproof wire connectors HAISSTRONICA - 400PCS (AWG 12-26).

Waterproof Heat Shrink Solder Seal Wire Connectors

$16.99 USD

Join, insulate and seal with one sleeve.

Simplify the small parts of a wire repair.

• Heat to connect — the built-in solder ring joins prepared wires without crimping.
• Insulate and seal — the sleeve and adhesive rings help keep moisture out.
• Choose the right fit — select the connector color and marked gauge before preparing.

Coupon strip showing 5 percent and 10 percent discounts by order value
AWG:Yellow - AWG 12-10
PCS:50 PCS
Quantity:
Free Returns Within 30 Days
Free Shipping on All Orders
Warranty up to 24 Months
Visa Mastercard PayPalAmerican Express DiscoverDiners Club
Workbench scene using heat gun wire connectors; precise heating shrinks sleeves on cables for sealed connections.
350W Mini Heat Gun $23.99
Haisstronica red/black heat shrink tubing set, 220PCS, 3:1 dual-wall, 1/4"-1/2" sizes, electrical insulation.
220PCS Heat Shrink Tubing Kit - 3:1 Shrink Ratio - Black+Red $14.99

Heat gun technique on a solder butt connector—rotate while heating; minimum shrink 176°F and solder melt 280°F for sealed splices.Blue hot‑melt flows inside solder seal wire connectors, forming a watertight seal after heating for durable long‑term splices.Spec overview showing low‑temperature solder sticks inside sleeves, starting melt at 138°C and full flow at 160°C for consistent joints.Upgraded carry case for solder seal wire connector kit, organized compartments, secure latches, reusable storage.

Experience cutting-edge innovation and professional-grade quality with Haisstronica Solder Seal Wire Connectors. Our carefully engineered connectors combine soldering and sealing into one seamless action, dramatically simplifying your electrical projects and ensuring long-lasting, weather-resistant performance.

Waterproof and Insulated Wire Solder Connectors

Our connectors feature dual-wall heat shrink solder tubing that provides a watertight, insulated barrier around your wires. Once heated, the tubing tightly shrinks around the connection, protecting against moisture, dirt, corrosion, and environmental stress. With Haisstronica’s solder and heat shrink technology, your connections remain stable and durable, even in the harshest conditions.

Size chart showing white to yellow heat shrink for wiring, listing product and wire dimensions with matching AWG ranges
  • Enjoy free shipping on all orders.
  • Delivery Time: 1-2 business days to The US and Canada. Delivery times may vary depending on your location and carrier conditions.
  • Details
  • Tracking: After your order is shipped, you will receive an email with a tracking number to monitor the delivery status.
  • Need Help? Contact our support team for assistance with shipping or your order.
  • 30-Day Returns
    You may request a return within 30 calendar days of delivery. Items must be unused, in their original condition, and include all original packaging and accessories.
  • Damaged, Defective, or Incorrect Items
    Contact us with your order number and photos. If the issue is due to our error, we will cover reasonable return shipping costs or provide an appropriate replacement.
  • Refunds
    Approved refunds are issued to your original payment method within 5 business days after inspection. Your bank may require additional processing time.
  • To start a return, email support@haisstronica.com with your order number and reason for return. Please obtain approval before sending anything back.
  • View Full Return & Refund Policy
  • 5 stars: 8 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
B
BMC
As described

As described

A
Americas Basenji & Shiba Inu Rescue
well made sturdy

thy work very well for speaker wires

W
Walter
Thanks

Nee to order some more

F
FDISLA
Calidad excelente

Muy buena calidad y funcionan muy bien tanto en el apriete del cable y en el sellado para impermeable.

B
BnB C
Works as expected

Works as expected

R
Rb
Works awesome

Great for heavy duty trailers and flatbeds

d
dave kessler
Work well

Ok

T
Travis
Love these, easy, seals well, burn resistant

Love these, easy, seals well, burn resistant

Close-up of insulated wire connectors joining red, blue, and yellow wires

WELCOME TO THE HAISSTRONICA CLUB!

Subscribe for Extra 10% OFF Your First order

Learn More About Porduct

  • Quality and Innovation: As an industry innovator, Haisstronica strives to bring you the latest innovations in the industry. Our solder seal wire connectors are crafted with high-quality materials and undergo rigorous testing to ensure superior performance and reliability. We are committed to providing you with cutting-edge solutions that meet your needs.
  • Solder and Seal in One Step: Our solder seal wire connectors combine both functions into a single step. With a simple application of heat, the solder inside the connector melts and then creates a secure and waterproof seal around the wires. Enjoy a quicker and more efficient way to make reliable connections.
  • Versatile Applications: Our solder stick wire connectors are suitable for a wide range of electrical projects. Whether you're working on automotive, marine, household, or DIY applications, these connectors can handle it all. From basic repairs to complex installations, you'll have the right connectors for any project.
  • Secure and Durable Connections: Our solder seal wire connectors ensure a solid and long-lasting connection. The melted solder forms a strong bond between the wires, providing excellent conductivity and minimizing the risk of signal loss or intermittent connections. Rest assured that your connections will stay intact, even in demanding environments.
  • Waterproof and Insulated: The solder seal wire connectors provide excellent waterproofing and insulation for your connections. The heat shrink tubing creates a protective barrier that guards against moisture, dust, and corrosion. This ensures the durability and longevity of your electrical systems, even in harsh conditions.

Quick and Easy Soldering Wire Connectors

Forget complicated traditional soldering methods. With our innovative heat shrink solder connectors, just insert your wires, apply heat evenly, and watch as the solder melts perfectly into place. It’s quick, clean, and foolproof—no specialized soldering iron needed, just a simple heat gun or lighter.

Benefits of Choosing Haisstronica Solder Seal Connectors:

  • Effortless Installation: Combine soldering and sealing into one easy step.
  • Professional Results: Ensures secure, conductive, and permanent connections.
  • Versatile Use: Ideal for automotive, marine, household, and DIY projects.
  • Durable & Waterproof: Protects against moisture, corrosion, and wear.
  • Quality Assurance: Each connector rigorously tested for reliability.

Make your next electrical connection quick, secure, and waterproof with Haisstronica Solder Seal Wire Connectors—the smarter choice for professionals and hobbyists alike.

Superior Quality Solder Butt Connectors

Our solder butt connectors ensure exceptional electrical conductivity and mechanical strength. Each soldering butt connector contains precision-formulated solder wire connectors that melt and evenly distribute solder, creating a secure, vibration-resistant joint. With Haisstronica, you achieve perfectly soldered connectors every time, reducing signal loss and avoiding intermittent connections.

Trusted and Tested for Superior Performance

As a leader in wire connector solder solutions, Haisstronica rigorously tests every product to exceed industry standards. Our dedication to quality guarantees reliable soldered wire connectors that you can trust for all your electrical installations.

Versatile Solder Connectors for Any Application

Whether you're tackling automotive wiring, marine installations, household repairs, or DIY electronics, Haisstronica’s range of solder seal wire connectors has you covered. These wire connectors solder effortlessly onto various wire gauges, making them suitable for everything from quick fixes to complex wiring projects:


  • Automotive Wiring Repairs: Reliable connections in high-vibration environments.

  • Marine Electronics: Corrosion-resistant joints that withstand saltwater and humidity.

  • Home Electrical Projects: Easy installations with professional results.

  • DIY Electronics: Precision soldering without specialized tools or skills.

Free Standard Shipping

Fast shipping within 2 business days