By the use of combination type of packed seal and bellow seal, the leakage problem of polymeric kettle seal could be solved, the repair period could be prolonged, the fairly good benefit result for the unit was raised.

• 以填料密封与波纹管机械密封的组合形式,可解决聚合釜密封的泄漏问题,延长密封的检修时间,为装置增加较好的效益。