唇形密封容易磨损,特别是在高温、高压、磨蚀或腐蚀环境下更是始此。因此要避免旋转轴轴承润滑剂被污染是困难的。最近,美国Durametallic公司研制的一种轴承保护器优于唇形密封,使泵的使用寿命延长三到五倍。该装置(如+图)主要有 Lip seals are subject to wear and tear, especially under high temperature, high pressure, abrasive or corrosive conditions. Therefore, it is difficult to avoid contamination of the rotary shaft bearing lubricant. Recently, a bearing protector developed by the Durametallic Company in the United States outperformed the lip seal, extending pump life three to five times. The device (such as + map) are mainly