PSS Shaft Seal Water-lubricatered 25x50mm

479,95

2 in stock

Warranty: 2 Years

PSS Shaft Seal Water-lubricated 25x50mm -58mm. The environmentally friendly alternative to your leaking grease-lubricated propeller shaft bearing.

Dimensions:
Shaft: 25mm
Stern tube: 50mm -58mm
Installation length: 206 mm

Do you have a different size? Please order by mail or phone.
In the order, only the propeller shaft diameter and the diameter of the stern tube have to be specified.

The operating principle of PSS Shaft Seals is as follows:
The constant spring force of the reinforced nitrile rubber bellows presses the carbon graphite disc against the rotating stainless steel disc.
This creates a 100% watertight seal that is highly suitable for applications in yachts and ships.

This water-lubricated 25x50mm PSS Shaft Seal is easy to assemble and completely maintenance-free.

The many thousands of units that have found their way into pleasure and commercial shipping over the years are proof of the reliable operation and ingenious simplicity of the system.
The PSS Shaft Seal is a specialised mechanical seal suitable for a variety of applications, with unrivalled performance.

For questions about this product, its parts or its type or application, please contact us.

Product ID: 67030

Description

PSS Shaft Seal Water-lubricated 25x50mm-58mm. The environmentally friendly alternative to your leaking grease-lubricated propeller shaft bearing.

How does it work:
Free floating seals, duo cone seals or toric seals, they all work on the same principle.
The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange

The stationary carbon flange is attached to a heavy duty silicone bellow which is attached to the vessel’s stern tube (shaft log), with 316SS hose clamps.
This compression (pre-load) maintains constant contact between the two mating faces of the stainless-steel rotor and carbon flange.
This creates a perfect watertight connection.

Tolerance:
The carbon flange is over-bored to the shaft diameter allowing it to “float” around the shaft and thus compensate for most misalignment and vibration from the drive-line.
The stainless-steel rotor is sealed to the shaft by two O-rings that are recessed into the bore of the rotor.
These O-rings rotate with the shaft and the stainless-steel rotor, and therefore do not experience wear during operation.

Tip:
Grease-lubricated propeller shaft installations can easily be converted to water-lubricated installations.
Mount the gland thruster upside down on the inner gland and mount the PSS bellows on top.

Temperature Limits: -25 °C to +220 °C
Pressure limits: 2.75 BAR
Shaft RPM limits: 10,000 RPM
Carbon graphite: Lapped to 4 HLB (0.00044″ tolerance)
316SS / Nitronic 50: Faced to 9-12 Ra
Bellows material: Molded formed silicone / fabric

Benefits at a glance:

  • Quick and easy installation.
  • Compact design.
  • Reduced maintenance to a minimum.
  • Effective functionality.
  • Long trouble free life.
  • Excellent solution for repowering.

As a cheaper alternative, we can also offer you the stuffybox, but please note that it requires annual maintenance!

Reviews

There are no reviews yet.

Show only reviews in English (0)

Be the first to review “PSS Shaft Seal Water-lubricatered 25x50mm”
Project! AB Marine service

Your email address will not be published. Required fields are marked *