It is of built-in type, single seal face, single spring and unbalanced type with hook spring transmission, and the direction of rotation of spring depending on that of axis.
内装式、单端面、单弹簧、非平衡型，带钩弹簧传动，弹簧旋向与轴旋向有关。
It is of built-in type, single seal face, single spring and unbalanced type with hook spring transmission, and the direction of rotation of spring depending on that of axis.
内装式、单端面、单弹簧、非平衡型，带钩弹簧传动，弹簧旋向与轴旋向有关。
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