| Customization: | Available |
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| Structure: | Single End |
| Pressure: | Medium Pressure Mechanical Seals |
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Parameter
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Details
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Model
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QT-58U
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Seal Type
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Single spring unbalanced mechanical seal
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Size Range
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12 mm - 50 mm
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Pressure Rating
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Maximum working pressure: 1.6 MPa
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Temperature Range
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-40 °C - 200 °C
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Shaft Speed
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Maximum rotational speed: 3000 rpm
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Application Media
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Compatible with water, oils, weak acids, and alkalis
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Face Material
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Carbon graphite for the rotating face; Silicon carbide for the stationary face
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Face Flatness
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Flatness tolerance: ≤0.0009 mm
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Face Roughness
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Rotating face: Ra ≤0.2 μm; Stationary face: Ra ≤0.2 μm
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Spring Material
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Austenitic stainless steel (316L)
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Spring Rate
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15 N/mm
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Spring Quantity
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1
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Housing Material
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Cast iron (GG25)
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O - Ring Material
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HNBR (Hydrogenated Nitrile Butadiene Rubber)
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O - Ring Hardness
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Shore A 70 ± 5
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Installation Direction
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Axial installation
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Seal Chamber Diameter Tolerance
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H8
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Shaft Diameter Tolerance
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h7
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Axial Length
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35 mm - 70 mm depending on size
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Radial Clearance
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0.5 mm - 1.2 mm
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Leakage Rate
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≤5 ml/h at rated conditions
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Weight
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0.3 kg - 1.2 kg depending on size
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Storage Conditions
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Store in a dry, cool place away from direct sunlight and corrosive gases
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Operating Vibration Limit
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≤5 mm/s at rated speed
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Axial Load Capacity
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Maximum axial load: 50 N
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Chemical Resistance
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Excellent resistance to aliphatic hydrocarbons, mineral oils, and many aqueous solutions
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Assembly Torque
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Recommended assembly torque: 8 N·m - 15 N·m
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Disassembly Method
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Use appropriate tools to avoid damaging the seal components
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Lubrication Requirements
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Pre - lubricate O - rings and seal faces with compatible lubricant before installation
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Cleaning Instructions
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Clean all components with a suitable solvent before installation
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Reusability
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Not recommended for reuse after disassembly
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Maintenance Interval
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Inspect every 6 months under normal operating conditions
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Certification
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Conforms to ISO 21049 standards
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Packaging
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Individually packed in anti - static bags with protective foam
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Shipping Weight
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0.5 kg - 1.5 kg depending on size and packaging
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Warranty Period
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12 months from the date of purchase
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Technical Support
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Available 24/7 for installation and troubleshooting guidance
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