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High purity ceramic seal face, contains 99.5% aluminum oxide, more used as seat material. It is nearly chemically inert and cost substantially less than other materials. Ceramic performs well in many applications. Other materials should be considered for thermally variable service such as hydrocarbon process applications or where elevated temperatures tend to vaporize media. Also it is limited to moderate pressures and speeds.
Properties |
99.5% ceramic |
Density(g/cm3) |
3.90 |
Porosity(%) |
0.4 |
Rockwell Hardness (HRA) |
90 |
Bending Strength(kg/cm2) |
3000 |
Stability of thermal vibration |
6 |
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