Heat-Shrink Tubing Sleeves with Solder GEKO 0.25–6 mm², 50 pcs

Heat-Shrink Tubing Sleeves with Solder GEKO 0.25–6 mm², 50 pcs are heat-activated insulating sleeves with an internal solder ring and adhesive lining designed for creating reliable electrical splices. The set includes 50 sleeves covering conductor cross-sections from 0.25 mm² up to 6 mm², allowing repair and joining of a wide range of wire sizes. These sleeves combine soldering, sealing and insulation in a single component to simplify wiring repairs and maintenance in automotive, marine and household applications.

Advantages

Each sleeve integrates a preformed solder ring and inner adhesive that melt when heated, producing a mechanically stable solder joint and a moisture-resistant seal. The heat-shrink outer tubing provides reliable electrical insulation and strain relief after shrinking, reducing the need for separate soldering tools or additional sealants. A variety of sizes in a single 50-piece set ensures compatibility with common conductor cross-sections and speeds up repair work.

Suitable for

• Automotive wiring repairs and connector splices
• Marine and outdoor electrical connections requiring moisture resistance
• Household appliance and equipment wiring maintenance
• Prototyping and low-voltage control circuits

Key specifications

• Set quantity: 50 pieces covering multiple sleeve diameters
• Conductor cross-section compatibility: 0.25–6 mm²
• Construction: heat-shrink outer tubing with internal solder ring and adhesive lining
• Function: insulation, soldered electrical joint and moisture-resistant seal
• Material properties: heat-shrinkable polymer outer layer and low-temperature solder core

How to use

Select the sleeve size appropriate for the wire cross-section so that the conductor fits comfortably inside the tubing. Slide the sleeve onto one wire before making the electrical connection. Strip the wire ends to the required length, twist or align conductors, then position the solder ring over the joint. Apply heat evenly using a heat gun or calibrated torch until the solder melts and the outer tubing shrinks tightly around the conductors. Allow the joint to cool before subjecting it to mechanical stress or electrical load.

Usage recommendations

Use a temperature-controlled heat gun to ensure even heating and avoid overheating surrounding insulation. For best results, keep the heat source moving and maintain a safe distance to prevent burning wire insulation. Verify electrical continuity and insulation integrity after cooling, and choose the correct sleeve size for a snug fit that allows the internal solder to flow and the adhesive to seal the joint.