Hangzhou Sealcon Fluid Machinery Co., Ltd

Ceramic Mechanical Seal

ceramic physical property

Technical parameter

unit

95%Al2O3

99%Al2O3

99.5%Al2O3

content of Al2O3

%

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

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