Heat shrinkable tubes are easy and quick to use. In occasional emergencies, you can use a lighter to complete the shrinkage. They are often used for insulation protection of wires. However, many users have doubts about whether heat shrinkable tubes are waterproof. Heat shrinkable tube manufacturer DUWAI Is it waterproof? Let me popularize this question for everyone. We mainly use two products, ordinary heat shrinkable tubes and glued heat shrinkable tubes, for analysis.

    The first is ordinary heat shrink tubing, which is also the most widely used. It is very common on various electronic components. As long as the ports on both sides of this type of heat shrink tube do not enter water, the part wrapped by the heat shrink tube in the middle can also be used. Waterproof. That is to say, as long as the port is placed in a dry place, even if the middle part is soaked in water, water cannot penetrate into the inside of the heat shrink tube. If the heat shrink tube covers the conductor, it is not recommended to use ordinary heat shrink tube for waterproof insulation, because once the heat shrink tube is damaged, leakage and other safety issues will occur. As long as there is a risk of immersion, don't use regular heat shrink tubing. If you only have ordinary heat-shrinkable tubing on hand and the waterproof requirements are not very high, you can use electrical tape to wrap 3-4 layers tightly around the port after shrinking the heat-shrinkable tubing to increase reliability.

    The glued heat shrinkable tube can be sealed, waterproof, dustproof and air leakproof. Even if the entire product protected by the glued heat shrinkable tube is placed in water, water will not be able to enter its interior. Because the hot melt glue on the inner wall of the glued heat shrink tube can melt and fill the entire gap, making the glued heat shrink tube and the product closely fit together, the port and the inside are filled with hot melt glue. After the heating is completed and cooled, the two There are no gaps in the tube, so water and dust cannot enter, thus achieving the waterproof function. Therefore, the glued heat shrink tube is also called waterproof heat shrink tube. It has been widely used in water pumps and can achieve long-term sealing and waterproofing in the water.

    Through the above explanation, there should be an answer to the question of whether heat shrink tubes are waterproof. Ordinary heat shrink tubes are not recommended for use in waterproofing-related environments. If you have higher requirements for waterproofing, it is recommended to use glued heat shrink tubes, which can be used for a long time. It is waterproof and rust-proof, and has excellent sealing and waterproof performance.