Supreme® propulsion seals

We believe a seal should deliver top performance, keep you going and offer you Peace of Mind. This idea led to the development of the Supreme seal. Introduced in the 1980s and further developed ever since, Supreme seals offer a ‘plus’ to many propulsion systems and vessels worldwide.


It is important that all sealing components are of the highest quality and are perfectly compatible with each other. In the production facility at our headquarters in Alblasserdam, the Netherlands, we make sure our Supreme seals meet these high standards – adding quality and reliability to your propulsion system.


The Supreme stern tube seals and Supreme thruster seals are produced with high-quality housing parts, lip seals and liners. Our Modular, Made-to-Measure philosophy enables us to deliver customer-specific designs combined with short quotation, lead and delivery times. In addition, the Supreme seals are suitable for both new-build and retrofit applications.


The list of advanced options such as a Hard Metal Layer (HML) coating for extra durable liners and Environmentally Acceptable Lubricant (EAL) compatible lip seals allows you to customise your seal design to your preferences.


The following benefits apply to all Supreme seals:

  • Effective separation of water and lubricants
  • Bonding in situ possible
  • Optimised Total Cost of Ownership
  • Available with a broad range of options
  • Suitable for both new-build and retrofit applications
  • Highly corrosion resistant
  • Modular, Made-to-Measure

Download maritime brochure

Discover a complete overview of all Supreme seals, customised options and additional products.




Due to the modular design, you can customise your seal using a broad range of options.

  • Hard metal layer coating (recommended)
  • Dirt barrier
  • Hastelloy® C4 springs
  • Net cutters
  • Wire winders
  • Oil collector ring (ocr)

Spare parts

Is your seal experiencing leakage or are the wearing parts due for replacement? Our spare parts are in stock and can often be sent the same day! Please contact our sales department for specialist advice!


24/7 service

At Lagersmit, you can count on 24/7 worldwide support for installation and maintenance of your seal. Our service engineers are your sealing experts and can be on site within 48 hours.



  • 24/7 available
  • On location within 48 hours
  • Certified engineers
Lagersmit Service Team

Our figures


Founded in 1856


Based in the Netherlands


24/7 worldwide service & spare parts


More than 50,000 seals delivered

About Lagersmit

The world of seals is our world. To supply the best seals, we always think in terms of solutions: every step is a step in the right direction. In the way we work together with our customers, you could call us a good friend. The focus is on collective benefit, but we are certainly no yes-men! If we believe things can be done better, we are not afraid to say so.


Do you want more information or advice about how our seals can be used for your applications? Contact one of our experts!

Team Member

Jan Willem Bongers

Sales Manager

Team Member

Eric de Paauw

Account Manager

Team Member

Bart van Lee

Account Manager

Team Member

Vincent van der Heiden

Account Manager

General phone number