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High temperature may effect.
Due to high stuffing box pressure.
Some cases, high shaft speed.
The face load might have unbalanced seal designs
Also cavitations causes problem
Some cases, high shaft speed The face load might have unbalanced seal designs
there for High temperature may effect
Major causes of seal face opening are
1. Improper lapping of seal faces causing failure of thin film.
2. High shaft speed causing whirl in shaft.
3. High temparature.
4. In rotating head assembly springs not bearing the load properly because of precipitation of working fluid.
5. Incorrect choice of stationary or rotating face.
i think running the machine under over vibration circumstances and exceeding the allowable vibration of it
whirl in shaft
improper lapping
high temperature
low viscosity on lubricating oil
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