These solder seal wire connectors provide a secure and waterproof connection in just seconds! Temperature Specifications: Minimum Melt Temperature: 138°C Minimum Shrink Temperature: 80°C Operating Temperature: -55°C to 125°C Shrink Temperature: >160°C Product Information: Brand: Maidodo Material: PE, Solder Product Name: Heat Shrink Solder Sleeve Maximum Voltage: 600V Material: Polyolefin Shrink Ratio: 2:1 Dielectric Strength: 1KW Protection Class: IP67 Package Includes: 200 x Red Solder Seal Connectors 180 x Blue Solder Seal Connectors 80 x White Solder Seal Connectors 40 x Yellow Solder Seal Connectors Hot melt adhesive creates a durable, waterproof seal between wires and contacts. Waterproof connectors prevent corrosion, even in the wettest environments. Features: Transparent sleeves allow for visual inspection. You can control the operating temperature and heating time. Easy to Identify: Different sizes of connectors have different colors. Perfect for marine and automotive applications. Features: Solder and seal connectors allow you to use them in hard-to-reach or tight spaces. Since no crimping is required, simply place the stripped wire into the solder sleeve and heat to complete the connection. A simple one-step wire connection that is insulated and sealed. Function: Insulation Protection: Used to seal wire connections to prevent leakage and keep circuits away from rodents. The solder ring melts when heated and flows into the wire connection, effectively preventing the connection from breaking. How to Use: 1. Pass the wire through the tube of the appropriate size butt weld, connect and process the wire correctly, and move the joint so that the solder ring part is aligned with the wire. 2. Heat the two ends of the tube with a hot air gun to shrink it. The waterproof ring becomes a waterproof ring after heating. 3. Heat the solder ring with a hot air gun until the solder ring melts and penetrates the wire connection. Note: Heat the heat shrink tubing part until it shrinks tightly around the wire; overheating will cause the heat shrink tubing to melt completely. The solder ring must be heated properly to penetrate the wire connection.