Injection sealing technology

Synthetic insulator end fittings using high temperature vulcanized silicone rubber Seal, sealant by injection machine under high temperature and pressure injection, in the mold and umbrella skirt, sheathing the overall vulcanization molding, sealant fully filled the fittings end of all the gaps, Press bonding completely eradicates all the defects and hidden dangers existing in other Sealing technologies and greatly improves the reliability of the sealing of end fittings. This sealing technology, has reached the most advanced level in the world. The ± 500kV DC composite insulator produced by this sealing technology has been widely used in the Three Gorges Project - Changzhou DC Transmission and Transfer Project which has attracted worldwide attention.