降低摩擦系数，保护船体不受损伤。

Lower friction factor, in avoid of damage of hull.

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可降低摩擦系数，提高密封的可靠性和使用寿命。

By using it, the friction coefficient can be reduced and the sealing reliability and service life are improved as well.

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计算结果表明，机械密封端面压力分布呈凸抛物线状，增加密封端面锥度可降低摩擦系数。

The calculation results show that the pressure distribution shape is a convex parabola and the increase of the radial taper of the seal face can decrease the friction coefficient.

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