Waterproof heat shrinkable tubes refer to glued heat shrinkable tubes, which have an extra layer of hot melt adhesive than ordinary heat shrinkable tubes. The hot melt adhesive on the inner wall is melted and tightly bonded to prevent the intrusion of water vapor and achieve the purpose of waterproofing. The main material of waterproof tape is ethylene propylene rubber. By applying adhesive on the surface, it has good self-melting properties, thereby achieving the purpose of sealing and waterproofing.

Performance difference

    The rated working temperature of the waterproof heat shrinkable tube is 125℃, and the emergency overload temperature of 160℃ for four hours will not affect the product quality. The hot melt adhesive peeling strength can reach ≥48N/10mm. The rated working temperature of the waterproof tape is 90°C, the emergency overload temperature is 130°C, and the peel strength of the waterproof tape to the steel plate is 26N/10mm. Although it can meet most daily requirements, the peel strength of waterproof heat shrink tubing is slightly greater than that of waterproof tape.

The difference between application scenarios

    Waterproof heat shrinkable tube is used as a whole form to play a waterproof role. It is often used for cable butt welding joints or joints, and for sealing and fixing the positions of cables and plug-in connectors. It is mostly used for sealing and waterproofing during initial production. Waterproof tape is mostly used to repair damaged cables or pipes. Without cutting off the line, waterproof tape has the absolute advantage of convenience. It only needs to be wrapped around the line that needs to be repaired. The waterproof heat shrinkable tube has a tubular structure and can only be inserted from one end to the middle.

The difference in usage

    Waterproof heat shrink tubing requires the use of tools such as a hot air gun for heating and shrinking. The product is a whole, seamless, more stable and reliable, and the waterproof rating can reach IP67. Waterproof tape usually needs to be used with PVC electrical tape. Tear off the isolation paper, stick it to the seam, and press the tape with your hands to make it stronger. Then wrap a layer of electrical tape on the outside to prevent the waterproof tape from falling off, thus improving the mechanical protection performance.

    In terms of stability and reliability, waterproof heat shrinkable tubes are better than waterproof tapes because the waterproof heat shrinkable tubes are a whole and have no seams. The waterproof tape needs to be wrapped around and around, and there will inevitably be some gaps.

From the perspective of ease of use, if it is used for daily damage repair without cutting off the cable, waterproof tape has an absolute convenience advantage.

    Because the application fields and usage scenarios of waterproof heat shrinkable tubes and waterproof tapes are quite different, they should be selected according to the usage scenarios and technical requirements. If the cables in electronic and electrical fields are sealed and waterproof, it is recommended to use waterproof heat shrink tubes to ensure a stable service life and prevent them from falling off.