Replace the sealing ring.

更换密封环。

Sealing ring must maintain good function.

密封圈必需保持良好的机能。

And then push sealing ring and clamp ring;

再推密封圈、锁紧圈；

The pump is stagnated. The sealing ring wears too much.

水泵淤塞，密封环磨损过多。

A sealing ring is not possible with increased maximum speed.

一个密封环，是不可能增加的最高车速。