In the process of manufacturing aerospace parts, parts are usually processed in equipment with different temperatures. For example, some processes need to be treated at room temperature or even lower temperature, while some processes need to be processed at higher temperature. The temperature emitted by high-temperature equipment will cause the ambient temperature to rise, which makes the temperature of the surrounding equipment increase with it. For the equipment that needs to work at low temperature, the normal work of the equipment will be affected after the temperature rise, so the normal processing of parts can not be completed. For example, in the processing process of the jack, the key connecting part of the radio control system, there are four opening slots in the opening part of the jack. After the machining is completed, the heat treatment is carried out to eliminate the internal stress generated by the jack machining, so as to stabilize the size. In the process of heat treatment, the high temperature of about 300 ° C is adopted, and other processes are carried out at a lower temperature. The high temperature emitted from the heat treatment equipment will cause the ambient temperature to rise, causing other equipment and communication circuits around to be abnormal and unable to work normally. Therefore, the use of Hebei Zeal high temperature heat resistant sleeve has an important role and significance.