Shaft Seals

SeaThigor

ShaftSealSQ2

The Thordon SeaThigor Seal is a mechanical face seal for 300mm (11.8") to 750mm (29.5") water lubricated propeller shafts found in yachts, cruise ships, merchant ships and naval vessels. The SeaThigor has evolved from a design first tested in 2003 and improved during the next decade.

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TG100

ShaftSealSQ6

The Thordon TG100 is a new mechanical seal designed specifically for 86mm (3.375") to 305mm (12") shaft vessels operating in either clean or abrasive-laden waters including workboats, harbor tugs, offshore supply vessels, yachts, ferries, fishing trawlers and self-propelled dredgers. 

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BlueWater Seal

ShaftSealSQ7

The Thordon BlueWater seal is a water lubricated forward seal for 300mm (11.811”) to 1000mm (39.370”) propeller shafts found in various vessels, such as yachts, cruise ships, merchant ships and naval vessels. The simplicity of the seal design provides minimal seal maintenance.

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Documents

 

References

References articles of Thordon commercial Propeller shaft bearings in blue water operation

 

Design

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Thordon Bearings Sizing Calculation Program

The final (fully finished) sizing of a Thordon elastomer or ThorPlas bearing can be determined by using the Thordon Bearing Sizing Calculation Program.
You cannot run the Thordon Bearing Sizing Calculation Program without a User Registration Number.
Once you have a User Registration Number you can download the Program below and enter it when prompted.

Step 1 - Register:
Click here to Request a Bearing Sizing Program User Registration Number

Step 2 - Download:
If you have a Bearing Sizing Program User Registration Number, you can download the program here


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Our Newsletter

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  • News Thumbnails 320x160_NW23-MF

    Thordon Merchant Fleet NewsWorks 2023

    Thordon’s web-based newsletter specifically developed for marine users of oil-free and grease-free bearings in the merchant marine sector. This newsletter includes articles that highlight our successes on tankers, bulk cargo carriers, ferries, and cruise ships with COMPAC seawater-lubricated propeller shaft bearings, and ThorPlas-Blue deck equipment installed and used around the world. We also introduce Thordon’s new BlueWater Seal and highlight the largest rudder bearing Thordon has ever produced.
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Recent Marine News

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  • ThordonNews-Apr25-RT500-thumb

    Thordon Bearings RiverTough Exceeds 500 Installations in Workboat Sector

    May 01, 2025
    In a significant milestone for the company, Thordon Bearings has seen its RiverTough tailshaft bearing solution surpass 500 installations in the workboat sector. Primarily a retrofit solution but also increasingly specified for newbuilds, RiverTough is designed for coastal and inland waterways, where conditions are typically muddy and abrasive. The solution, applied in combination with hard-coated nickel-chrome-boron (NiCrB) Thordon shaft sleeves, has been verified as outlasting rubber bearings by a factor of two or more in the harshest operating environments.
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  • ThordonNews-damZgard-thumb

    Denmark’s damZgard Mechanics the Latest to Join Thordon Bearings’ Extensive Distributor Network

    Apr 29, 2025
    Thordon Bearings, the world leader in environmentally safe, high-performance shaft bearing and seal systems, has welcomed Denmark’s damZgard Mechanics to its network of authorized distributors. With a solid reputation as a leading supplier of mechanical engineering solutions to Denmark’s maritime industries, damZgard Mechanics will be responsible for facilitating existing and new maritime customer requirements and developing new business opportunities in other markets outside of marine.
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