Высокая термостойкость silicon carbide industrial ceramic sealing ring is a high-performance ceramic sealing element made of high-purity silicon carbide (SiC) material, which has excellent high temperature resistance, wear resistance, corrosion resistance, and thermal shock resistance. This type of sealing ring is widely used in harsh working conditions such as high temperature, high pressure, and strong corrosion, and is an important material in the field of mechanical seals.
Характеристики материала
（1） High temperature resistance performance
Silicon carbide ceramic sealing rings can work stably at temperatures up to 1600 ℃, and their high-temperature strength and oxidation resistance are significantly better than ordinary ceramic materials. At 1400 ℃, the bending strength of silicon carbide can still be maintained at 500-600MPa, making it an ideal sealing material for high-temperature equipment.
（2） Wear resistance
The hardness of silicon carbide is extremely high, with a Mohs hardness of 9.2-9.4 and excellent wear resistance. Even under high-speed operation and high load conditions, silicon carbide sealing rings can maintain a low wear rate, significantly extending their service life.
（3） Corrosion resistance
Silicon carbide ceramics have extremely strong resistance to most corrosive media such as acids, alkalis, and salts. This material exhibits excellent chemical stability and can maintain sealing performance in harsh chemical environments.
（4） Low thermal expansion coefficient
The thermal expansion coefficient of silicon carbide ceramics is extremely low (about 4.0 × 10 ⁻⁶/℃), which means that the size change of the sealing ring is minimal when the temperature changes sharply, and it can effectively resist thermal shock.
（5） High thermal conductivity
The thermal conductivity of silicon carbide ceramics is relatively high (120-150W/m · K), which can quickly conduct heat, reduce local temperature, and thus improve the thermal stability of equipment.
（6） Self-lubricating property
Silicon carbide ceramics have a smooth surface, low friction coefficient, and can maintain good operating performance even under non lubricated conditions, making them particularly suitable for working conditions with high lubrication requirements.
Производственный процесс
High temperature resistant silicon carbide industrial ceramic sealing rings are usually made using pressureless sintering technology. This process uses high-purity nanoscale silicon carbide powder, which is sintered at high temperatures of 2100 ℃ -2200 ℃ to ensure the density and uniformity of the material. In addition, the surface of the sealing ring is precision ground and polished to achieve a mirror effect, thereby improving the sealing performance.
Область применения
（1） Mechanical seal
Silicon carbide ceramic sealing rings are widely used in mechanical sealing devices of centrifugal pumps, turbines, compressors, and other equipment. Its excellent wear resistance and corrosion resistance enable it to maintain reliable sealing performance in high temperature, high pressure, and strong corrosive environments.
（2） Chemical equipment
In the chemical industry, silicon carbide sealing rings can be used for equipment such as reaction vessels, tube bundles, and storage tanks to protect equipment from corrosion. It has excellent acid and alkali resistance and can withstand corrosion from various chemical media.
（3） High temperature equipment
Silicon carbide sealing rings are suitable for high-temperature equipment such as furnaces and melting furnaces, and can maintain stable performance under extreme temperature conditions.
（4） Aerospace
In the aerospace field, silicon carbide sealing rings can be used in the sealing system of liquid fuel rocket engines to ensure sealing reliability under high temperature and high pressure conditions.
（5） Automotive industry
Silicon carbide sealing rings can be used as sealing components for automotive engines to improve their wear resistance and high temperature resistance.
Преимущества продукта
（1） High reliability
Silicon carbide ceramic sealing rings perform well under harsh working conditions such as high temperature, high pressure, and strong corrosion, which can significantly improve the operational reliability and safety of equipment.
（2） Long lifespan
Its excellent wear resistance and corrosion resistance significantly extend the service life of the sealing ring and reduce equipment maintenance costs.
（3） Low maintenance cost
Due to its self-lubricating and high wear resistance, silicon carbide sealing rings do not require frequent replacement or maintenance during operation, reducing equipment maintenance costs.
（4） Customization
Silicon carbide ceramic sealing rings can be customized according to specific customer needs, including size, shape, and surface treatment, to meet the requirements of different application scenarios.
High temperature resistant silicon carbide industrial ceramic sealing rings have become an important material in the field of mechanical seals due to their excellent high-temperature resistance, wear resistance, corrosion resistance, and thermal shock resistance. It is widely used in various industries such as machinery, chemical, aerospace, and automotive, significantly improving the operational efficiency and reliability of equipment.
