Ceramic seal faces have the property of the resistant-high-temperature, resistant-corrosion, resistant-wearing and good sealing and are widely used in spacecraft, machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on.
drawing of mechanical seal manufacturers Ceramic Seal Ring
| A1203 Ceramic physical property | ||||
| Technical Parameter | Unit | 95% | 99% | 99.50% |
| Content of A1203 | % | ≥95 | ≥99 | ≥99.5 |
| Density | g/cm3 | 3.7 | 3.88 | 3.9 |
| Hardness | HRA | 85 | 88 | 90 |
| Porosity Rate | % | <0.4 | <0.2 | <0.15 |
| Fractural Strength | Mpa | 250 | 310 | 350 |
| Coefficient of Heat Expansion | 10-6/K | 5.5 | 5.3 | 5.2 |
| Thermal Conductivity | W/M.K | 27.8 | 26.7 | 26 |
