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 Seal
materials > |
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Virgin and filled PTFE |
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Virgin |
alumina 18% |
glass fiber 25% |
carbon 25% |
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Density |
g/cm^3 |
2.08 |
2.20 |
2.16 |
2.08 |
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Water Absorption |
% (24h) |
<0.01 |
0.02 |
0.02 |
0.05 |
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Hardness |
Shore D |
D50 |
D68 |
D60 |
D62 |
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Tensile Strength |
MPa |
26.5 |
13.8 |
14.3 |
12.9 |
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Flexural Strength (MOR) |
MPa |
19.7 |
18.9 |
13.2 |
15.6 |
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Compressivel
Strength |
MPa |
23.8 |
12.8 |
6.9 |
11.6 |
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Thermal Expansion (CTE) |
10^-6/K |
135 |
92 |
115 |
108 |
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Thermal Conductivity |
10^-6·W/(m·K) |
24.6 |
42.8 |
44.5 |
65.1 |
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Max. Operating
Temp. |
°C |
260 |
260 |
260 |
260 |
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