Ceramic seal faces, Bushes and Rings encompass the property of the good sealing, resistant, high-temperature, and resistant-corrosion, resistant-wearing and are generally used in spacecraft, machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on.
| Technical parameter | Unit | 95% | 99% | 99.5% |
|---|---|---|---|---|
| Content of AL O | % | 95 | 99 | 99.5 |
| Density | G/cm | 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 /K | 5.5 | 5.3 | 5.2 |
| Thermal conductivity | W/M.K | 27.8 | 26.7 | 26 |
