ProfiSeal propellershaft

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.

Questions about the product?
Phone: +49 (0) 67 32/96 14 76
sales@profiseal.com

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.

Type Approvals

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Technical Data

shaft diameters 20 – 90 mm, Dimensions (mm)

D	d1	d2	d3	d4	L1	L2	L3
20 25	74	105	90	Pneumostop available from 50 mm	64	8	Pneumostop available from 50 mm
30 35	87	120	105		68
40 45	97	130	115
50 55	112	140	125	145			40
60	135	170	150	170	72	10
70	145	180	160	180	72
80	155	190	170	190	73
90	165	200	180	200	73

Other shaft sizes (D) and Imperial Sizes on Request

Optional

Pneumostop Unit, inflatable stand still seal, available from shaft diameter 50 mm, Pmax. = 7 bar Pneumostop should not be inflated while shaft turnsair inlet should normally be open.