SJS SJPETRO SJ Serva X04-05-696 Mechanical Seal, 4X3 Centrifugal Pump SJS 4x3x11 is a kind of centrifugal pump for use in oilfields, available in splined shaft type, extended shaft type and oil lubed & extended shaft type. It is widely used on cementing units and fracturing units for oilfield development because of its high pumping head, large displacement and long service life. SJPETRO#RGPETRO#DFXK#ZYT#BPMCO#LANSHI#NOV#NATIONAL OILWELL WARCO #KERUI#HH#HONGHUA#BAOJI#BOMCO#CPTDC#SJ Contact info What's app +8615972752793 Luben@youlongpetro.com