Customization: | Available |
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Structure: | Single End |
Pressure: | High Pressure Mechanical Seals |
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Parameter Category
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Specific Parameter
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Detailed Description
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Basic Information
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Seal Type
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QT Armstrong seal ST
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A high - performance mechanical seal designed for a wide range of industrial pump applications, ensuring reliable and efficient operation.
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Brand
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QT
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Model
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Armstrong seal ST
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This model is engineered to meet the demanding requirements of various fluid handling systems.
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Materials
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- Rotating Ring
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Tungsten Carbide
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Tungsten carbide offers extreme hardness and excellent wear resistance, making it ideal for high - speed and high - pressure applications. It can withstand harsh operating conditions, ensuring a long service life.
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- Stationary Ring
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Silicon Carbide (SiC)
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Silicon carbide provides a smooth and durable surface for effective sealing. It has high chemical resistance, which helps prevent damage from aggressive media.
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- O - Ring
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Fluoroelastomer (FKM)
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The FKM O - ring ensures a tight and reliable seal. It is resistant to a broad range of chemicals, temperatures, and mechanical stresses, maintaining its integrity over time.
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Size Specifications
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Shaft Diameter Range
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25 - 60 mm
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This seal can be installed on shafts with diameters within this range, making it suitable for a variety of pump sizes commonly used in industrial settings.
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Seal Chamber Inner Diameter
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35 - 70 mm
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Designed to fit into seal chambers with inner diameters in this range, ensuring proper alignment and secure installation.
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Seal Width
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9 mm
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The 9 - mm width is optimized to balance sealing effectiveness and mechanical stability, reducing the risk of leakage and wear.
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Performance Parameters
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Working Pressure
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Maximum 2.0 MPa
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Under normal operating conditions, the seal can withstand a maximum pressure of 2.0 MPa, preventing the leakage of pumped media and maintaining system integrity.
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Working Temperature
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-30ºC - 180ºC
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Capable of operating effectively within this wide temperature range, it can adapt to both extremely cold and high - temperature industrial processes.
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Linear Velocity
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Maximum 12 m/s
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The seal is designed to handle a maximum linear velocity of 12 m/s, ensuring stable performance even in high - speed rotating pumps.
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Applicable Media
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- Water - based Fluids
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Suitable for potable water, cooling water, and water - based chemical solutions with a pH range of 2 - 13.
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- Oil - based Fluids
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Compatible with lubricating oils, hydraulic oils, and most mineral - based oils.
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- Chemicals
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Resistant to common acids, alkalis, and solvents, such as sulfuric acid (up to 30% concentration), sodium hydroxide (up to 40% concentration), and ethanol.
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Installation and Maintenance
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Installation Method
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Axial Installation
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Installed axially onto the pump shaft following a precise installation procedure. Proper alignment and torque application are crucial for optimal performance.
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Installation Torque
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18 - 22 N·m
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During installation, a torque within this range should be applied to ensure the seal is securely fastened without causing damage to the components.
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Maintenance Cycle
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Every 4000 operating hours
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Regular maintenance is recommended every 4000 operating hours. This includes inspecting for signs of wear, leakage, and proper alignment, as well as cleaning and lubricating if necessary.
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Storage Conditions
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Store in a dry, clean environment with a temperature between 5ºC - 25ºC. Avoid exposure to direct sunlight, moisture, and corrosive gases.
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Proper storage conditions help preserve the seal's materials and prevent premature degradation.
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Quality and Certification
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Service Life
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Approximately 2 - 4 years under normal operating conditions
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With proper operation and maintenance, the QT Armstrong seal ST can provide reliable service for 2 - 4 years, offering long - term value and performance.
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Leakage Rate
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≤0.05 mL/h
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Engineered to have an extremely low leakage rate, this seal meets strict industry standards for fluid containment, ensuring safety and environmental protection.
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Certification Standards
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ISO 9001, ISO 14001, and API 682 (Type B)
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The seal complies with international quality management (ISO 9001), environmental management (ISO 14001) standards, and meets the requirements of API 682 (Type B) for mechanical seals in the petroleum, petrochemical, and chemical industries.
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Other Characteristics
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Vibration Resistance
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Can withstand vibrations with a frequency range of 10 - 60 Hz and an amplitude of 0.6 mm
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Designed to maintain its sealing performance in environments with moderate to high levels of vibration, reducing the risk of seal failure due to mechanical stress.
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Self - lubricating Property
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The seal faces have a self - lubricating coating that reduces friction and wear, enhancing the seal's efficiency and extending its service life.
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This feature minimizes the need for additional lubrication, reducing maintenance costs and downtime.
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