间隙密封具有能够适应高速、高压、高温、低温等工作条件及结构紧凑,维护方便,无填料老化问题等优点。因此,近年来在某些工业部门中已用它来代替填料密封,特别是航空工业和超高压压缩机等经常采用间隙密封装置。我厂承制的间隙密封元件——阀芯与阀套(图1),应用于708工程中前轮转向控制阀的 Gap seal has to be able to adapt to high-speed, high pressure, high temperature, low temperature and other working conditions and compact structure, easy maintenance, no filler aging problems. In recent years, therefore, it has been used as a replacement for packing seals in some industrial sectors. In particular, gap seals are often used in the aerospace industry and in super-high pressure compressors. Our factory-made gap seal components - spool and sleeve (Figure 1), used in the construction of the project 708 steering wheel valve