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Pink heat-shrink butt splice connector 18 AWG 1.2 in long

3M

3M MH18BCK Butt Splice Connector 18 AWG Pink Heat Shrink

SKU CH-KQSS-2K760

Heat-shrink butt splice connector for 22-18 AWG wires, crimp termination with tin-plated copper, CSA and UL certified, 1.2 in length

  • TypeElectrical Connectors
  • Handles up to 18 AWG wire for secure automotive splices
  • Heat-shrink insulation seals out moisture and vibration
  • Crimp termination with tin-plated copper ensures low-resistance joints
  • CSA certified and UL listed for code-compliant installations
  • RoHS 2011/65/EU compliant for lead-free, eco-safe use

18 AWG Butt Splice Connector

The 3M MH18BCK is a crimp-type butt splice designed for wire gauges from 22 AWG up to 18 AWG. It suits automotive, marine and general electrical repairs where a sealed, insulated joint is required. The pink heat-shrink insulation identifies the maximum wire size at a glance.

Crimp and heat installation

Strip each conductor, insert into the seamless copper barrel and crimp with a standard tool. Apply heat to shrink the tubing until adhesive flows, creating a moisture-resistant seal. A crimp that is too loose or uneven heat will leave gaps that compromise the connection.

1000 V rating and 221 °F limit

The connector handles up to 1 000 V and continuous temperatures of 221 °F, covering most low-voltage vehicle and industrial circuits. It is not suited for conductors larger than 18 AWG or environments exceeding the stated temperature ceiling.

Highlights

  • Handles up to 18 AWG wire for secure automotive splices
  • Heat-shrink insulation seals out moisture and vibration
  • Crimp termination with tin-plated copper ensures low-resistance joints
  • CSA certified and UL listed for code-compliant installations
  • RoHS 2011/65/EU compliant for lead-free, eco-safe use

Specifications

Brand3M
TypeElectrical Connectors

Questions about this item

How can I confirm the butt splice is working correctly after crimping and heating?

After crimping the copper barrel with a proper tool, apply heat until the pink tubing shrinks fully and the adhesive flows; a solid, sealed joint with no visible gaps indicates a reliable 1,000 V connection

What comes in the package and what must I supply myself?

The pack contains the 3M MH18BCK butt splice connectors with heat-shrink insulation; you must provide 22–18 AWG wire, a matching crimp tool and a heat source such as a heat gun

Which wire-gauge version should I choose for my application?

Select this 18 AWG maximum model when your conductors fall between 22 AWG and 18 AWG; the 0.062 in barrel inside diameter and 1.2 in overall length are sized for that range

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