Mechanical is mostly used to seal coolant in water pump. It’s made of two back-to-back ceramic disks. One is fixed and the other one is rotating. They reply on a minute amount of coolant between the two disks for lubrication so in normal operation, it’s possible to leak a little bit.
When it failed, larger amount of coolant leaked and exited the water pump housing through a weeping hole and left powdery residue when dried.
shotia wrote:
大家都講機械油封所以...(恕刪)
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