・Long life:
Fine ceramic and special carbon is adopted as a mechanical seal materials.

・High reliability:
Stainless steel is adopted for main body material. There is no seal force trouble caused by accumulated contamination in the fluid and water scale on spring part because spring for seal force is not in the fluid.
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・Low torque:
Low torque is achieved because optimal seal materials and surface pressure is adopted for machanical seal part and ball bearing is also adopted.