EN
Description
Silicon carbide bushing and seal/sealing ring is the most widely used friction material in mechanical seals, with high chemical corrosion resistance, high mechanical strength, good wear resistance, high temperature resistance, and good self-lubricating properties. In addition, silicon carbide sealing ring also has the advantages of advanced fire resistance, heat shock resistance, small size, light weight, high strength, and good energy-saving effect.
Specifications
KCE® SiSiC/RBSiC Technical Data Sheet
| Technical Parameters | Unit | SiSiC/RBSiC Value |
| Silicon Carbide content | % | 85 |
| Free Silicon content | % | 15 |
| Bulk Density 20°C | g/cm³ | ≥3.02 |
| Open Porosity | Vol % | 0 |
| Hardness HK | kg/mm² | 2600 |
| Flexural Strength 20°C | MPa | 250 |
| Flexural Strength 1200°C | MPa | 280 |
| 20 – 1000°C (Coefficient of Thermal Expansion) | 10–6 K–1 | 4.5 |
| Thermal Conductivity 1000°C | W/m.K | 45 |
| Static 20°C(Modulus of Elasticity ) | GPa | 330 |
| Working temperature | °C | 1300 |
| Max. Service Temp (air) | °C | 1380 |
Applications
Silicon carbide bushings and seals/sealing rings are widely used in machinery, metallurgy, petrochemical, power, light industry, shipbuilding, aerospace, automobile, military equipment and other fields, such as mechanical seal friction parts, sliding bearings, nozzles, cutting tools, etc. of automobiles, bearings, pumps, oil cylinders. It is a commonly used chemical pump sealing material in chemical production enterprises.
Advantages
1. Sufficient strength and rigidity. Under working conditions, it does not damage the bushing/seal/sealing ring, has minimal deformation, and can maintain sealing even under fluctuating working conditions.
2. Good tribological properties. It can maintain good lubrication performance and good boundary lubrication performance of the fluid film, ensure that the sealing ring end faces are always in contact and can continue to operate when rotating, and ensure satisfactory service life under working conditions.
3. Good thermal conductivity, heat resistance, and heat shock resistance. During operation, the bushing/seal/sealing ring are at a relatively high working temperature, and there may also be rapid temperature changes. Silicon carbide sealing rings have high thermal conductivity and small linear expansion coefficient, and do not crack when subjected to thermal shock.
4. Good corrosion resistance. A bushing/seal/sealing ring with good corrosion resistance can resist the corrosion and wear of fluids, resulting in a long working life. In addition to the above performance, it also has low density, low permeability, and good self-lubricating properties.
