Large-Scale Ceramic Sealing Rings
CeramTec manufactures large-format monolithic ceramic sealing rings. Our components made of ROCAR® silicon carbide are used in industrial as well as maritime applications.
With diameters of up to 1,000 mm, these sealing rings are considered unique on the market. They reflect CeramTec's many years of experience in solving complex sealing requirements and, thanks to their high-performance material resistance, offer a decisive advantage in demanding fields such as the offshore and shipping industries. The combination of high-performance materials with outstanding properties and the customized, individual design of sealing solutions makes us the preferred partner for particularly challenging applications.
Key Facts at a Glance
- Large-format ceramic sealing rings: diameters of up to 1,000 mm are considered unique on the market
- Excellent material properties, including corrosion resistance, wear resistance, hardness, and resistance to high temperatures
- Suitable for extreme operating conditions and harsh environments, such as the shipping and offshore industries
- For marine applications such as propulsion systems, turbines, pumps, and compressors

Material Properties of Silicon Carbide
Ceramic solutions made of our ROCAR® SiC material ranged are designed to meet various challenging requirements such as:
- High heat resistance 1,350 / 1,800 °C
- High corrosion and wear resistance
- Extremely high hardness
- High strength in all temperature ranges (from – 100 °C to + 1,800 °C)
- Excellent thermal conductivity
- Low thermal expansion and specific density

- Water turbines
- Ship propulsion systems, such as propeller shaft and shaft seal arrangements
- Heavy-duty pumps, such as slurry and sand pumps or transfer pumps for abrasive media
- High-performance pumps for a wide range of media, such as seawater, cooling water, ballast water, or crude oil pumps
- Compressor and gas seals, such as compressed air, process gas, or LNG/LPG compressors
- Fluid-handling applications


