20 – 90 mm, water or oil lubricated

A propellershaft is part of the ship’s shaft system and seals open or closed stern tube systems so that no water can penetrate and no lubricating oil can escape. Similar to a mechanical seal, it is virtually leak-free and leaves no oil or grease residues in the fairway. At the same time, penetration of dirty water into the bilge is prevented – thus eliminating costly disposal. The ProfiSeal propellershaft has a shaft diameter of 20 to 90 millimetres and is available in both water- and oil-lubricated versions. The axial sealing concept prevents the shaft from running in, which is otherwise common with radial seals. In addition to the propellershaft, we offer the Pneumostop unit, an inflatable standstill seal. This makes it possible to replace, repair or clean mechanical seals and propellershafts when the shaft is at a standstill without having to call in a shipyard.

Technical Features
- water or oil lubricated facetype seals
- seawater resistant also in in aluminium-version, for open or closed sterntube-systems
- easy installation
- high lifetime even in extremely dirty waters
- no shaft-wear like with radial type seals due to facetype design
- allowed axial shaft movement: +/- 5mm
- allowed radial shaft movement: +/- 2mm

Operating Limits
- shaft diameter max 20 to 90 mm
- medium to be sealed seawater, oil etc.
- medium temprature seawater -5° to +40° C
- oil -5° to +70° C
- operating pressure (p) 0,1 to 1,5 bar*
- gliding speed max. 10 m/s
- flushing / cooling approx. 2,5 l/h per mm shaft diameter

*Applications above 0,5 bar have to be clearified technically with the manufacturer.