We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Clear plastic tube filled with 300 red insulated butt splice connectors

Wire Cap Connectors 300 Pcs 22-18 AWG Red

SKU CH-QX92-QA7J8

300 heat-shrink butt splice connectors join 22-18 AWG wires with solder-seal waterproof insulation for automotive and marine use

  • ColorBlack
  • Standards/CertificationsUL Listed
  • Waterproof seal protects wiring in marine environments
  • Solder ring eliminates crimping for faster installation
  • Transparent sleeve allows visual inspection of connections
  • 2:1 shrink ratio creates tight insulation with heat gun
  • 300 pieces cover 22-18 AWG automotive and marine projects

Automotive Wire Cap Connectors 300-Pack

These 300 insulated butt splice connectors suit automotive, marine and general wiring projects. Each piece accepts 22-18 AWG conductors and provides a waterproof seal after heating. The pack supplies enough terminals for multiple vehicle or boat installations.

22-18 AWG Solder Seal Compatibility

The connectors are built for 22-18 AWG wire only; they will not fit larger 16-14 AWG or smaller 26-24 AWG conductors. Using the wrong gauge prevents the solder ring from flowing correctly and breaks the waterproof barrier.

Heat-Gun Installation and Common Mistakes

Strip each wire, insert both ends into the transparent sleeve and apply a hot air gun until the tube shrinks at a 2:1 ratio. A lighter or torch often overheats the solder, while skipping the strip-length check leaves gaps that let moisture in.

Highlights

  • Waterproof seal protects wiring in marine environments
  • Solder ring eliminates crimping for faster installation
  • Transparent sleeve allows visual inspection of connections
  • 2:1 shrink ratio creates tight insulation with heat gun
  • 300 pieces cover 22-18 AWG automotive and marine projects

Specifications

ColorBlack
Standards/CertificationsUL Listed

Questions about this item

What does the 22-18 AWG range mean for the wire thickness I can join?

It covers stranded or solid conductors from 22 AWG up to 18 AWG, so typical automotive lighting, sensor and stereo leads will fit without crimping.

How does the UL listing affect the way I can use these connectors?

The UL listing confirms the splices meet recognised safety standards for insulated wire connectors, making them acceptable for inspected vehicle and marine wiring.

What clearance do I need around the sleeve when I apply heat?

The transparent sleeve shrinks at a 2:1 ratio, so allow enough space for the tube to collapse fully around the joint without touching nearby harnesses.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.