Connectors Assortments 50pcs Solder Seal Wire Connector Kit
Connectors Assortments 50pcs Solder Seal Wire Connector Kit
Connectors Assortments 50pcs Solder Seal Wire Connector Kit
Connectors Assortments 50pcs Solder Seal Wire Connector Kit
Connectors Assortments 50pcs Solder Seal Wire Connector Kit
Connectors Assortments 50pcs Solder Seal Wire Connector Kit

50pcs Solder Seal Wire Connector Kit

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30 Days Returns

Nilight will accept returns for up to 30 days from the date of purchase. Please include all original items in your return shipment. Incomplete returns may not be eligible for a full refund. Returns within 30 days or purchase will receive a full refund for the purchase price of the product.

No returns will be accepted after 30 days. Nilight will provide a return shipping label upon request.

Non-contiguous US residents and International residents – including Alaska, Hawaii, Canada and Mexico – are responsible for return shipping charges. Refunds will be applied to the original payment method that was used. Refunds are generally issued within 5-10 business days of Nilight receiving all returned goods. Your bank may require additional processing time to reflect the refund in your account.

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2024 Product Guide

About this item

  • Easy to identify and operate - Different colors correspond to different sizes, easy to pick up for use. A transparent sleeve provides precise inspection when stripping and inserting wires inside.
  • More Effective Way -1 Step solder and seal process for all your connections, insulated and sealed.
  • Waterproof: Unique double-wall design, external polyolefin pipe, built-in hot melt adhesive. When heated, the polyolefin tube shrinks in size, and the adhesive flows through the insulation. Double-wall tubing ensures a watertight seal to prevent wire corrosion
  • No-Slip Wire Contact - Tubing reduces in size and solder will melt and flow through the stripped wires, ensuring strong holding --- your wire will never slip out of the connector. Can be ideally used in marine and automobile applications
  • Package include: 50 pcs Solder Seal Wire Connector, 23 pcs Red, 12pcs Blue, 10pcs White, 5 pcs Yellow

Nilight solder seal wire connector kit


  • Shrinkage Ratio 2:1.
  • An Easy One-Step Wire Connections.
  • Easy Identification: Color-coded connector tubing.
  • Polyolefin heat shrink butt connectors improved pullout strength.
  • High-quality wire connectors in Seal, Strain Relief, Cable Chick, and Insulation.
  • Melted solder ensures wires are strongly connected and avoids wires slipping out from the terminal.
  • Red Connectors: 23pcs
  • Blue Connectors:12pcs
  • White Connectors: 10pcs
  • Yellow Connectors: 5 pcs
  • Item Weight: 1.6 ounces
  • Product Dimensions: 4.13 x 2.76 x 0.98 inches


NIlight Solder Seal Wire Connectors


Solder and hot melt adhesive inside can be perfectly Waterproof. The connectors can prevent wires from corrosion. The transparent sleeve of the butt connectors provides Visual Inspection. --- You can control the operating temperature and heating time.

NIlight Shrinking Ratio: 2:1 Of Solder Seal Wire Connectors

Shrinking Ratio: 2:1

Comply with all relevant European standards; Shrinking ratio: 2:1. Durable Nylon + Brass; 3 colors (Red+Blue+Yellow)make it easy to identify the right side of the connector. Prevents the wire from shorting out, a perfect connection for the wire.

Nilight Wire Connectors

Apply Heat

Apply heat while continuously rotating the wire to make the connector evenly heated.

Minimum Shrink Temperature: 80℃.

Minimum Temperature for Solder to Melt:138℃.

How to use

Electric wires

Prepare the electric wires

Put the two ends of the wire which was stripped off together and twist them.


Insert the 2 wires into the connector

Move the connector to the middle of the two-wire, align the tin ring to the uncovered wire.

Apply heat Solder Seal Wire Connectors

Apply heat

Use a heat air gun until it is melted in size and the adhesive flows, filling gaps within the terminal.


No crimping required

No crimping is needed, very easy to use!

Nilight 50025R solder seal wire connector kit

Customer Reviews

Based on 21 reviews
Sylvester Moen
Good deal

Good deal

Doris Dibbert
Exactly as advertised

Very easy to use, very durable, and waterproof just like they said. I would definitely recommend this to others and i will be buying more. I use them on so many different applications. Thank you for a quality product

Sage Christiansen
Easy to use

Works great and waterproof

Destiney Barton

very easy to use

Angeline Eichmann
Me parese bien util

Me agrado para los cables del carro

Kiera Collier
Watch the sizes

pay attention to the sizes, the 50piece kit is the size of a credit card, looks much bigger in the photo.

Marisol Weber
Good Seals

Great to have on hand.

Edwardo Towne
Easy install and good quality

I really like the product. Very easy to install with out have any instructions enclosed. Looks like it would be weatherproof but wont know due to it being installed on wiring for car stereo

Cecilia Mante
Easy to apply

GREAT seller to do business with. HIGHLY recommend

Filomena Rodriguez
Worked as they should

Easy to use will definitely Buy again

Parts ordered must be in stock for the order to ship. Approximately 98% of all orders placed leave our warehouses the same day (not including weekends & holidays). Even with our huge inventory, we may run out of an item. If this is the case you will receive an email with an expected availability date.

DELIVERY DAYS: 2-6 Business Days (More Time and Extra Fee for * Heavy and Big-size Products ) Processing Time: 1-2 Business Day

Free Shipping

Qualifying items receive Free Shipping on all orders. Qualifying orders for Free Shipping are shipped via ground delivery. Free Shipping is only applicable to the continental United States. Excludes Alaska, Hawaii, and Other Countries. Please check the detail page to see if it qualifies for Free Shipping. 

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