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填料改集(ji)式密(mi)(mi)(mi)封(feng)(feng)是一種(zhong)傳統的接觸式密(mi)(mi)(mi)封(feng)(feng),應用(yong)(yong)較廣(guang),結構簡單,更換方便(bian),成本低廉。可用(yong)(yong)于(yu)旋(xuan)轉、往復、螺旋(xuan)運動的密(mi)(mi)(mi)封(feng)(feng),對旋(xuan)轉運動的軸允許有軸向竄動,用(yong)(yong)于(yu)輸送(song)一般(ban)介質,...