密封介质使橡胶溶胀，降低了橡胶的硬度，由此油封的过早的老化和磨损；
The sealed media that rubber, and to reduce the swelling of the rubber oil seal, and, as a result, the hardness premature aging and wear;
分析了影响机械密封使用的几个因素，包括温度、压力、转速以及被密封介质的特点。
The factors affecting the use of mechanical seals, including temperature, pressure, rotary speed and characteristic of the sealed medium, are analyzed.
普通单一叶蜡石材料传压密封介质在高温高压下容易发生相变，影响介质的使用性能。
The phase change of ordinary pressure-transfer sealing medium made by pyrophylite occurs under high temperature and high pressure, which influences the medium's functions.
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