For medium and larger horsepower sizes, some manufacturers elect to offer by-pass (pumpage cooled) jacketed motor designs.

对于大中型功率（马力）的电，一些制造商选择供旁路（泵冷却）加套电设计结构。

Packng tools, Packing cutter, Gasket cutter, SWG winding machine, bending machine, Groover, Angling machine, Double jacketed machine, Gasket cutting machine, Puncher, Calender, Braider and so on.

密封械 ：根工具，根切割工具，垫片切割工具，缠绕，，铣槽，倒角，包覆，双翦，点焊，冲齿，辊压，根编织。