Solder connectors with heat-shrink insulation – fast, safe and moisture-proof
31 March 2026

When it comes to reliable electrical connections, solder connectors with heat-shrink insulation are the ideal solution. They not only provide a stable connection between cables but also protect against moisture and environmental influences. In this article you will learn everything important about the advantages, applications and handling of these practical connecting elements.
What are solder connectors with heat-shrink insulation?
Solder connectors with heat-shrink insulation are specially developed connecting elements for cables that allow soldering and insulating in a single step. The integrated heat-shrink tubing is made of polyolefin and has an inner adhesive that ensures a moisture-proof connection when heated.
Thanks to their flexible size, these solder connectors can accommodate cable cross-sections from 0.1 mm² to 4.5 mm² and are therefore ideal for a wide range of applications – from electronics to automotive technology.
Advantages of BIT solder connectors
- Easy application: when heated, e.g. with an HG 2320 E heat gun, the heat-shrink tubing contracts and seals the connection securely. No additional tools are required.
- Moisture-proof: the inner adhesive ensures that no water can penetrate the connection – ideal for outdoor applications or humid environments.
- Temperature-resistant: withstands temperatures from -55 °C to +125 °C.
- Transparent heat-shrink tubing: the transparent colour makes it easy to check the connection.
- Flexible in use: available in inner diameters from 1.7 mm to 6.8 mm, suitable for a wide variety of cable sizes.
How to use the solder connectors correctly
- Prepare the cables: strip the cables to be connected.
- Slide on the solder connector: insert the cables into the solder connector.
- Heat: heat the solder joint with a heat gun.
- Shrink and bond: the heat-shrink tubing contracts and the adhesive ensures a permanent, moisture-proof connection.
Within a few seconds a secure, stable and insulated cable connection is created – without any additional tools.
Applications
- Automotive industry: for vehicle wiring
- Electronics and electrical engineering: for device wiring.
- Marine and outdoor applications: ideal for damp or wet environments.
- Building services and industry: for sensors, controls and lighting systems.
BIT solder connectors with heat-shrink insulation are the perfect choice if you are looking for fast, safe and durable cable connections. They save time, offer high protection against moisture and are extremely versatile. With these solder connectors, every electrical connection becomes a professional and reliable solution.
Questions about this topic?
Our sales team is happy to advise you and prepare an individual quote.
Get in touch


