Water Lubrication Stern Tube Seal

Product Description

A water lubrication stern tube seal is a type of seal used in ships and boats to prevent seawater from entering the vessel through the stern tube, where the shaft passes through the hull. This type of seal is specifically designed to be used with water as the working medium.

There are two main types of water lubrication stern tube seals: the HPSD type and the HPSD-1 type. The HPSD type is suitable for vessels with an axial vibration of up to 1mm, while the HPSD-1 type is designed for vessels with an axial vibration of up to ±3mm and high speeds.

These seals operate by using a combination of water and lubricating grease to create a hydrodynamic film between the seal and the shaft, reducing friction and wear. Proper lubrication and maintenance of the seal are essential for its optimal performance.

It's worth noting that water lubrication stern tube seals are typically more environmentally friendly than traditional oil lubrication seals since they don't require oil or other harmful substances to function.