Mechanical Seal SiC Faces (Silicon Carbide) English Parameter Table
Parameter Category | Specifications | Reference |
---|---|---|
Material Type | Reaction Bonded SiC (RBSiC), Sintered SiC (SSiC), SiC with Graphite (SSiC+C) | 2 |
Density | ≥3.1 g/cm³ (RBSiC), ≥3.0 g/cm³ (SSiC) | 23 |
Hardness (HRA) | 92-94 (RBSiC), 90-92 (SSiC) | 21 |
Flexural Strength | 350-450 MPa (RBSiC), 300-400 MPa (SSiC) | 2 |
Pressure Resistance | ≤20 MPa (static), ≤5 MPa (dynamic) | 34 |
Temperature Range | -50ºC to +450ºC (standard), up to 800ºC with special coatings | 24 |
Corrosion Resistance | Excellent resistance to acids (except HF), alkalis, and organic solvents | 12 |
Friction Coefficient | 0.05-0.15 (against carbon), 0.1-0.2 (against SiC) | 2 |
Surface Finish | Ra ≤0.2 μm (lapping grade) | 3 |
Key Applications | Chemical pumps, oil refineries, semiconductor equipment, high-temperature reactors | 12 |
Supplementary Notes
- Material Comparison
- RBSiC: Higher density and mechanical strength, ideal for abrasive media 2.
- SSiC+C: Enhanced thermal shock resistance due to graphite inclusion, suitable for dry-running conditions 2.
- Standards Compliance
- Meets ISO 9001 and API 682 specifications for industrial sealing systems 3.
- Maintenance Tips
- Avoid dry running to prevent premature wear.
- Pair with compatible elastomers (e.g., FKM, EPDM) for optimal chemical resistance 4.
- Customization
- Available in custom geometries (e.g., stepped faces, radial grooves) for specific pump models (e.g., Wangen, John Crane)










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