AIRNIX 150 Piece Red Heat Shrink Solder Sleeve Butt Connectors, Insulated Crimpless Butt Splice, Water and Vibration Proof, Corrosion Free, Gauge Range 22-18 AWG for Industrial Applications

Heat Shrink Solder Sleeves are similar to the Heat Shrink Crimp Splice; however, they have the added benefit of having an inner lining of solder that creates a more secure connection when being heated. The outer jacket is a heat shrink material that, by shrinking down to the diameter of the cable, creates a weather resistant environmental barrier. The Solder Sleeve is robust, simple and effective but does need to be used by someone experienced making these types of connections ; this is because the combination of heat and the fact that you only get one shot to install these means they must be assembled correctly to work effectively. Also, those without experience may inadvertently destroy the connector by applying too much heat. Working temperature: - 131 Degree Fahrenheit to ~257 Degree Fahrenheit. Full Contraction Temperature: 266 Degree Fahrenheit. Solder Begin to Melt Temperature: 257 Degree Fahrenheit. Solder Completely Melted Temperature: 302 Degree Fahrenheit. If you find the solder is not melting, verify your heat gun is actually putting out 300 degree Fahrenheit with a Infrared Thermometer or similar.