潢川需牢記填料改集式密封的這些安裝要領
常用的密(mi)封(feng)(feng)(feng)型式(shi)主要有填料密(mi)封(feng)(feng)(feng)、機械密(mi)封(feng)(feng)(feng)等(deng),填料密(mi)封(feng)(feng)(feng)。填料改集式(shi)密(mi)封(feng)(feng)(feng)是一(yi)種(zhong)較(jiao)為原始(shi)的接觸(chu)式(shi)密(mi)封(feng)(feng)(feng),具有結構簡(jian)單、成(cheng)本低、更換簡(jian)便等(deng)優(you)點,由于(yu)這些優(you)點,因而在(zai)石油工(gong)業...