Provide pin to avoid sealing at midway and protect seal part of packer, enhanced reliability of plugging string.
设计有防中途坐封的销钉，保护封隔器的密封件，提高了封堵管柱的可靠性。
2
Compound and seal liquid packer, full-auto-matic liquid packer, full-automatic bag falling into machines, steamed bun shaper, auto dough pressing machine. etc.
复合膜边封液体包装机、全自动液体包装机、全自动包馅成型机、刀切馒头机、自动压面机等。
3
Y344-110 inspecting leakage pipe string was designed to resolve the problem of Jiang-453 that packer rubber being damaged easily and flow controller being not seal well.