Our Ocean Seal® stern tube seal spares are made in Europe to our own high specifications, using FKM (commonly referred to as Viton®) or HNBR (commonly referred to as Perbunan S®). They fit lip seal systems of all major brands of oil-lubricated systems, including air seals.
Our Ocean Seal® stern tube seal spares are compatible with all common maker systems. The materials we use are suitable for both EAL oils and mineral oil.
The tube that directs the propeller shaft from inside the vessel to the outside is known as the stern tube. It contains sleeve bearings to carry the propeller shaft, and these bearings can be lubricated with either oil or water depending on the design.
The stern tube passes from inside the vessel to the outside below the waterline. This means it must be sealed to prevent water from entering the hull and to prevent oil from leaking out of the stern tube. Seawater damages the stern tube bearings, and oil pollutes the environment.