Customization: | Available |
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Structure: | Single End |
Pressure: | Low Mechanical Seal |
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Parameter
|
Value
|
Material Type
|
Pure Graphite with Special Additives
|
Hardness (Shore D)
|
60 - 65
|
Density
|
1.8 - 2.2 g/cm³
|
Compressive Strength
|
≥ 150 MPa
|
Tensile Strength
|
≥ 30 MPa
|
Flexural Strength
|
≥ 50 MPa
|
Maximum Operating Temperature
|
-200°C to 650°C
|
Minimum Operating Temperature
|
-200°C
|
Maximum Operating Pressure
|
25 bar
|
Chemical Resistance
|
Excellent resistance to acids, alkalis, and organic solvents (except strong oxidizing agents)
|
Porosity
|
≤ 1.5%
|
Surface Roughness (Ra)
|
0.2 - 0.8 μm
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Friction Coefficient
|
0.08 - 0.15
|
Wear Rate
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≤ 0.002 mm/1000 cycles at 20 bar and 2 m/s
|
Shaft Diameter Range
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15 mm - 150 mm
|
Ring Thickness Range
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3 mm - 12 mm
|
Outer Diameter Tolerance
|
± 0.05 mm for diameters ≤ 50 mm; ± 0.1 mm for diameters > 50 mm
|
Inner Diameter Tolerance
|
± 0.03 mm for diameters ≤ 50 mm; ± 0.08 mm for diameters > 50 mm
|
Thickness Tolerance
|
± 0.1 mm
|
Seal Face Flatness
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≤ 0.0009 mm
|
Recommended Shaft Speed
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Up to 15 m/s
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Recommended Axial Load
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0.3 - 1.2 MPa
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Storage Conditions
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Dry environment, temperature between 0°C - 30°C, relative humidity ≤ 60%
|
Compressibility
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1.5 - 3.0%
|
Recovery Rate
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≥ 90%
|
Compression Set
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≤ 15% after 24 hours at 200°C
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Thermal Conductivity
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12 - 18 W/(m·K)
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Water Absorption
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≤ 0.5%
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Oil Absorption
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≤ 1.0%
|
Swelling in Chemicals
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≤ 3% in common acids and alkalis after 72 hours at room temperature
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Service Life
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Up to 8000 hours under normal operating conditions
|