Shaft sleeves for water-cooled rear bearings.

The tie rod tubes are made of AISI 316 material. The tie rod tubes feature a hose spigot for attaching the shaft seal and a thread for a water-lubricated rear bearing.
We always manufacture strapped tubes and strapped pipes with a welded bearing seat to order. Also special designs and large sizes for large vessels.

A boat's stern tube is a through-hull pipe through which the propeller shaft passes from the engine, through the hull, to the propeller.

At the end of the keel tube on the inside of the boat, there is a shaft seal that seals the joint between the end of the keel tube and the shaft, preventing water from entering the boat.