Wire cable connectors that improve electrical conductivity and maintain stability
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.
Heat shrink butt connectors - HAISSTRONICA Yellow SST-Y, AWG 12-10, 50pcs. CE/RoHS compliant.
Heat shrink butt connectors - HAISSTRONICA Yellow SST-Y, AWG 12-10, 250pcs. CE/RoHS compliant.

Heat Shrink Solder Seal Wire Connectors For AWG 12-10 - Yellow 50/250/500PCS

$9.99 USD $13.99 USD
Save 29%

A focused refill for your larger wire repairs.

Keep the yellow size ready instead of sorting a mixed pack.

• 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.
• Yellow 12–10 AWG sleeves — dedicated packs serve this wire range without unrelated sizes.

Coupon strip showing 5 percent and 10 percent discounts by order value
Item: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 $20.99
Haisstronica model automatic cable stripper for precision tasks.
Self-Adjusting Wire Stripper AWG 24-10 $15.99

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.

Specs

Brand Haisstronica
Color Yellow
AWG  12-10
Contact Material Copper
Connector Type Butt Splice
Insulation Material Polyolefin
Quantity 50/250/500PCS
Package Style Baged
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: 0 (0%)
  • 4 stars: 1 (100%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
C
Christopher Miles
They worked as they should

They worked as they should. The solder didn’t melt as evenly as some I’ve used. But did the job.

Christopher Miles review photo
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 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.
  • Secure and high-quality 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.

Free Standard Shipping

Fast shipping within 2 business days