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Around twenty wind turbines standing in the sea

Energy Generation

Wind Turbine Power Generation Seals

Sealing Solutions for Energy Generation

Energy Generation

The world is heating up, and the call for renewable energy has never been louder. But the game is changing – power sources are becoming decentralized, and energy systems must adapt to face new challenges head-on.

Wind power, a shining example of this shift, is evolving. By installing stronger, more powerful wind turbines in existing locations, companies can generate an even greater number of megawatts of sustainable power. Offshore, the wind energy frontier is expanding, with the deployment of highly efficient turbines. These impressive giants, however, rely on components that endure the harshest environmental conditions.

That's where Freudenberg Sealing Technologies steps in. Our sealing solutions are meticulously crafted, custom-engineered to meet the unique demands of the wind energy industry. Built upon our unmatched material and product expertise, we provide wind operators across the globe with the reliability they need to thrive in this dynamic landscape.

Our sealing solutions, catering to the main bearing, blade pitch, main gearbox, tower, nacelle, and buoyancy module, embody unparalleled efficiency and unwavering reliability. We are committed to pushing the boundaries of durability and friction optimization, meticulously crafting innovative sealing products that precisely align with the demanding needs of wind turbines.

Energy Generation

See Our Seals In Action

Experience our cutting-edge sealing solutions in action through an exclusive 3D animation of a Wind Turbine.

View 3D Animation 70-external-link

Product Range for Wind Turbine Applications


Main Bearing Seals

  • Seventomatic® – The new standard for large main bearing sizes
  • Radiamatic R35/ R55 shaft seals
  • Enviromatic premium V-Rings
  • V-Rings

Pitch/ Yaw Bearing Seals

  • Profile 20784 – The new standard for large pitch bearing sizes
  • Profile 20456/ 20717 extruded profiles catalogue program

Hydraulic Units Accumulators & Seals

  • Piston Accumulators for pitch drives
  • Diaphragm Accumulators
  • PTFE and PU hydraulic seals for pitch cylinders e.g. Simko300

Offshore Foundation Systems Seals

  • Profile 20788 for monopiles and transition piece
  • Cable Protection Systems

    Related Documents

  • Brochures 66-plus 67-minus


    Sealing Solutions for Wind Power

    High-quality and dependable seals for wind energy.

    English | PDF | 1361 KB


    Seventomatic® Flyer

    In addition to decades of experience, Freudenberg‘s engineers make use of the enormous material expertise of their globally active company. The development of the new radial shaft seal Seventomatic® for the wind industry combines new and proven elements with the precision of today‘s manufacturing processes.

    English | PDF | 7869 KB

  • Solutions Sheets 66-plus 67-minus


    Pitch & Yaw Bearing Seal

    Freudenberg Sealing Technologies produces Pitch & Yaw Bearing Seals with a new generation of materials that provide excellent reliability and functional consistency, as well as considerable cost advantages to our customers.

    English | PDF | 244 KB



    In order to further improve the technical availability of wind turbines, we have developed a new generation of materials: Ventoguard®.

    English | PDF | 546 KB


    Radiamatic R35 and R55

    Radiamatic R35 and Radiamatic R55 radial shaft seals help ensure long-term, reliable performance of the main bearing in wind turbines. The main bearing in a wind turbine is a key component in the generation of electricity from this renewable energy source. For a zero-defect performance the bearing seal has to fulfill the highest requirements.

    English | PDF | 690 KB


    Merkel® Enviromatic EA

    Merkel® Enviromatic EA is a deflector seal made of elastomeric material featuring an axially acting sturdy sealing lip with a well-defined sealing edge.

    English | PDF | 487 KB


    Hydraulic Piston Accumulator

    The Freudenberg Hydraulic Piston Accumulator consists of two components: a gas chamber and a fluid chamber, with a gas-proof piston seal separating the components.

    English | PDF | 537 KB


    Diaphragm Accumulators

    Diaphragm Accumulators by Freudenberg Sealing Technologies are designed for industrial and mobile equipment applications that demand lightweight, high-strength performance.

    English | PDF | 430 KB


    Seal for Monopile / Transition Piece - Flange

    To meet the new challenges in the Offshore market, FST has developed a more robust seal in terms of seal interference and contact surface.

    English | PDF | 1068 KB


    Seventomatic® S73

    Seventomatic® is an elastomeric shaft seal with an integrated meander spring, offering a flat spring characteristic to ensure a permanent, even preload of the sealing lip.

    English | PDF | 256 KB

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