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200 red heat-shrink butt connectors, 39 mm long, transparent with red rings

Solder Seal Wire Connectors 200pcs 22-18 AWG Red Heat Shrink Butt Connectors

SKU CH-079T-402NT

A kit of 200 red heat-shrink butt connectors for 22-18 AWG wire with a built-in solder ring that melts on heating to form a waterproof, UL-listed seal

  • Certifications and standardsUL Listed
  • 200 connectors cover large wiring jobs
  • Solder ring melts with heat only, no crimping tools needed
  • Dual-wall tubing creates watertight seal against moisture and abrasion
  • Red colour code matches 22-18 AWG wire for quick identification
  • Transparent housing lets you verify wire placement before heating

200-piece solder-seal kit for 22-18 AWG wiring

This kit supplies 200 red heat-shrink butt connectors sized for 22 to 18 AWG conductors. Each unit measures 39mm long with a 4.6mm outer diameter and 3.6mm inner diameter, built from 90% PE and 10% tin. The transparent housing with red coding lets you verify wire placement before heating. UL listed for compliance.

Single-use connectors need correct wire gauge

Each connector works once; the solder ring melts and the tubing shrinks only when heated, so a heat gun or similar source is required. The 22-18 AWG range is fixed — larger or smaller wires will not seal properly. The dual-wall design bonds to the insulation, making the joint waterproof but non-reusable. No crimping tool can substitute for the heat step.

Strip, insert, heat — but watch the temperature

Installation takes three steps: strip the wires, insert them fully into the connector, then apply heat until the solder flows and the tubing shrinks. Overheating can burn the PE sleeve or push solder out of the joint; under-heating leaves a weak mechanical bond and a leak path. The transparent body helps confirm insertion depth, but you must judge heat duration by eye.

How it compares

Measured against everything we stock in Wire Connectors & Cable Ties, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 57% of the 1,040 comparable items (median $13.99).

Specifications

Environment & compliance
Certifications and standardsUL Listed

Questions about this item

Should I pick the 22-18 AWG red connectors or a different size for my wiring?

Choose the red 22-18 AWG connectors when your wires fall within that gauge range. The kit contains 200 pieces sized at 39mm length, 4.6mm outer diameter and 3.6mm inner diameter, matching 22 to 18 AWG conductors.

What does the 200-piece count mean for a typical automotive rewire?

The 200 connectors supply enough joints for a full vehicle harness refresh or several smaller jobs. Each unit weighs about 70g total, so the box is compact yet covers dozens of splices without reordering.

How does the UL listing affect the heat-shrink installation?

UL listing confirms the connectors meet recognised safety standards. The dual-wall polyolefin tube with hot-melt adhesive shrinks and seals at standard heat-gun temperatures, giving a waterproof, strain-relieved joint without crimp tools.

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