Waterproof Heat Shrink Butt Connectors | Yellow 12-10 AWG

Stop using cheap vinyl connectors that corrode, pull out, or let moisture in. These waterproof heat

shrink butt connectors deliver a professional, sealed wire splice in seconds — no separate heat

shrink, no solder, no mess. Built for marine, automotive, caravan, and 12V electrical work where the

connection must hold first time, every time.

Key Features 

• Dual-wall adhesive-lined heat shrink — outer wall shrinks, inner adhesive flows to create a fully

waterproof, airtight seal

• Tinned copper seamless barrel — prevents splitting on crimp, maximises conductivity and

corrosion resistance

• 3:1 shrink ratio — aggressive shrink delivers a tight mechanical bond and superior pullout

strength

• Colour-coded by gauge — Red (22–16 AWG), Blue (16–14 AWG), Yellow (12–10 AWG) for fast,

error-free selection

• Resists saltwater, oils, fuels, acids, UV, and vibration — rated for the harshest marine and

automotive environments

• 600V rated — compatible with 12V, 24V, 120V, and 240V systems

• Crimp with any standard insulated-nest crimping tool, heat with any heat gun (150°C+)

• RoHS compliant — lead-free, suitable for vehicle electronics and marine OEM applications

How to Use

• 1. Strip 8–10mm of insulation from each wire end

• 2. Insert both wire ends into opposite ends of the connector

• 3. Crimp firmly using the colour-matched nest on your crimping tool

• 4. Apply heat (heat gun at 150–200°C) until the outer sleeve shrinks completely and adhesive

beads appear at both ends

• 5. Allow 30 seconds to cool — connection is waterproof and strain-relieved

Applications

• Automotive wiring repair & aftermarket accessories (car audio, lighting, sensors)

• Marine electrical — boats, PWC, trailers

• Caravan, camper trailer & motorhome 12V systems

• Motorcycle & ATV wiring

• Solar & off-grid battery system wiring

• Trucks, HGVs & agricultural machinery

• Industrial and outdoor electrical installations