What is stern shaft sealing device

 What is stern shaft sealing device?

Stern shaft sealing device is a key component used to prevent water intake in ship stern, usually by sealing ring, sealing gasket, sealing ditch and other parts. Its main function is to prevent oil and water from entering the cabin through the sealing effect.

The stern shaft sealing device can be divided into the front sealing device and the back sealing device, the front sealing device is mainly used to isolate the stern shaft tube and the cabin to prevent the leakage of lubricating oil; The rear sealing device is mainly used to ensure the isolation of stern shaft tube and outboard sea water to prevent the internal leakage of outboard sea water and the external leakage of oil in stern shaft tube.

The rear sealing device is one of the key components in the design and operation management of the propulsion system of modern large and medium-sized ships. Once the failure occurs, the light will leak in the sea water, and the heavy will leak out the oil, polluting the waters.

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