SIMPLEX AIRSPACE Non-Pollution Seals The oil and water necessary for lubricating the sealing rings is collected in the separating chamber and automatically drained into the bilge at periodic intervals by a pipe and valve system. “Non-Pollution” means: No seawater enters the sterntube oil, and no contamination of the seawater by sterntube oil. A water-free sterntube bearing guarantees a long service life for the bearing with all the associated benefits. Failure of the very important propeller shaft bearing has become virtually impossible. With the “Simplex-Compact Airspace Seal”, The Airspace Non-Pollution seal has shown in addition to the environmental aspect, ship that environmental and technical operations operators no longer have to be concerned that considerations are not mutually exclusive. they will become involved in extensive and costly From the technical and ecological point of liability proceedings with port authorities. The view a safe sterntube system is becoming ship operator can now state that the propeller increasingly important for ship operators. shaft seal cannot be the cause of any oil pollution. Airspace Non-Pollution” sterntube seal. The oil and water are separated by an air chamber filled with compressed air so that oil leakage out of the sterntube into the surrounding seawater or ingress of seawater into the sterntube is now technically impossible. ● MARINE ● PROPULSION ● SERVICES ● [email protected]

SIMPLEX AIRSPACE Non-Pollution Seals 0 Free fluid particles are collected in the Airspace chamber and are blown and drained inboard The sealing rings are arranged so that three at predetermined, adjustable intervals by the outer rings face the sea water and the innermost pneumatic automatic control system. For vessels which have large differences in draft between ring #3 faces the sterntube oil. Sealing ring #0 serves mainly as a dirt rejector load and ballast conditions, the pnematic control and sealing ring #1 seals against the sea water. Using a circulator in chamber I, cooling of sealing...