• Extra safety due to its redundant lip seal
  • Effective separation of water and lubricants
  • Available in split type

How it works

The chamber between the two oil-repellent lip seals is pressurised by the stern tube header tank. This way the pressure on both sides of the fourth lip seal remains equal. By closing off the oil supply to this chamber, the fourth lip seal can be used as a new oil-repellent lip seal. In case of leakage, docking and maintenance can be postponed by putting this redundant (fourth) lip seal to work. With the split version, it is not necessary to pull the shaft during dry dock. The Supreme SeaGuard is available for shaft diameters from 116 to 1150 millimetres.

Technical information

Curious about the technical specifications? Download the technical product information for drawings, cross sections and datasheets.



The Supreme SeaGuard consists of high-quality bronze housing parts, a stainless steel liner, two oil-repellent and two water-repellent rubber (NBR) lip seals.


Due to the modular design, you can customise the Supreme SeaGuard using a broad range of options. The most frequently chosen options for the Supreme SeaGuard are:

  • Hard metal liner coating (recommended)
  • FKM lip seals
  • Distance ring
  • Dirt barriers
  • Wire winders


Curious about all other options? Take a look at the overview for all possibilities!

”Based on a thorough assessment the Supreme (SeaGuard) Ventus outperforms other air seal solutions due to its unique design characteristics, i.e. simplicity, reliability and cost effectiveness.”

Minerva Marine Inc.

Andreas G. Asimakopoulos - Head of Technical Asset Integrity


Are our standard solutions not suitable for your application? Our engineers are more than happy to develop a custom-made sealing product!

Type and design approval

The Supreme SeaGuard Forward seal has been approved by globally recognised classification societies such as the American Bureau of Shipping (ABS), Bureau Veritas (BV), DNV GL and the Indian Register of Shipping. Watch overview of all available type and design certificates.

Vessel sailing in sea with containers

Quotation request

Join hundreds of other shipping companies that rely on our sealing solutions. Send us your details and request a no-obligation quotation.

Request quotation


Do you want more information or advice about the Supreme SeaGuard? Contact one of our experts!

Vincent van der Heiden

Account Manager

General phone number