| Customization: | Available |
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| Structure: | Single End |
| Pressure: | Medium Pressure Mechanical Seals |
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Parameter
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Description
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Model Number
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QT-SEAL-301
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Seal Type
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Single-Ended Unbalanced Mechanical Seal
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Size Range
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15 mm - 100 mm
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Shaft Diameter Compatibility
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Minimum: 15 mm Maximum: 100 mm
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Seal Face Material
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Tungsten Carbide (Stationary) Carbon Graphite (Rotating)
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Housing Material
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Stainless Steel 316
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Spring Material
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Inconel 718
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Gasket Material
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EPDM
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Operating Pressure
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Maximum: 1.6 MPa Minimum: -0.1 MPa (Vacuum)
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Operating Temperature
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Minimum: -40°C Maximum: 150°C
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Speed Limit
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Maximum Rotational Speed: 2800 RPM
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Fluid Compatibility
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Water-based Fluids Non-corrosive Chemicals Light Oils
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Leakage Rate
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Maximum Allowable: 5 ml/h at rated pressure and temperature
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Hardness of Seal Face
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Tungsten Carbide: 1600 - 1800 HV Carbon Graphite: 80 - 120 HB
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Surface Finish of Seal Face
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Ra ≤ 0.2 μm (Tungsten Carbide) Ra ≤ 0.4 μm (Carbon Graphite)
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Axial Runout Tolerance
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≤ 0.05 mm
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Radial Runout Tolerance
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≤ 0.03 mm
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Assembly Clearance
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Axial: 0.5 - 1.0 mm Radial: 0.1 - 0.3 mm
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Storage Conditions
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Temperature: 0°C - 30°C Relative Humidity: ≤ 60%
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Service Life
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Under normal operating conditions: ≥ 8000 hours
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Weight
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Varies by size, for 50 mm size: 0.8 kg
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Pressure Rating Class
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PN16
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Vibration Limit
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≤ 7.1 mm/s at rated speed
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Installation Torque
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For M8 bolts: 12 - 15 N·m
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Lubrication Requirement
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Self-lubricating design, no additional lubrication needed for normal operation
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Cleaning Method
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Use clean, non-abrasive solvents, avoid harsh chemicals
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Maintenance Interval
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Recommended inspection every 1000 operating hours
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Maximum Pressure Drop Across Seal
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1.2 MPa
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Minimum Film Thickness
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3 - 5 μm
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Seal Face Flatness
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≤ 0.0005 mm
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Spring Rate
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15 - 25 N/mm
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Compression Ratio of Gasket
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10 - 15%
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Tensile Strength of Housing Material
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≥ 515 MPa
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Elongation at Break of Gasket Material
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≥ 300%
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Chemical Resistance of Seal Face Materials
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Resistant to most common acids, alkalis, and solvents within specified temperature range
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