| Customization: | Available |
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| Structure: | Single End |
| Pressure: | Medium 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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Queeny-Type 21 Double seal
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A high-performance double mechanical seal designed for critical applications where preventing leakage is of utmost importance, offering enhanced sealing reliability.
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Model
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Queeny-Type 21
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Engineered to meet the demanding requirements of various industrial pumping systems and processes.
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Materials
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- Rotating Rings
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Silicon Carbide (SiC)
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SiC rotating rings provide excellent hardness and wear resistance, enabling the seals to withstand high-speed and high-pressure operations with minimal degradation, ensuring a long service life.
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- Stationary Rings
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Tungsten Carbide
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Tungsten carbide stationary rings offer superior corrosion resistance and a smooth surface finish, which are crucial for effective sealing and reducing friction between mating surfaces.
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- O-Rings
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Fluoroelastomer (FKM)
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FKM O-rings ensure a tight seal and are resistant to a wide range of chemicals and temperatures, providing reliable performance in diverse operating environments.
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Size Specifications
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Shaft Diameter Range
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30 - 60 mm
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This double seal is compatible with pump shafts having diameters within this range, making it suitable for a variety of medium to large-sized pump applications.
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Seal Chamber Inner Diameter
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40 - 70 mm
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Designed to fit into seal chambers with inner diameters falling within this interval, ensuring proper installation and optimal sealing performance.
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Seal Width
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12 mm
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The 12 mm width of the seal is carefully selected to balance effective double sealing and reduced friction, contributing to the overall efficiency of the pumping system.
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Performance Parameters
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Working Pressure
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Maximum 2.5 MPa
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Under normal operating conditions, the Queeny-Type 21 Double seal can handle a maximum working pressure of 2.5 MPa, providing a robust barrier against fluid leakage and maintaining system integrity.
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Working Temperature
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-30ºC - 160ºC
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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, ensuring consistent performance.
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Linear Velocity
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Maximum 15 m/s
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The seal is engineered to withstand a maximum linear velocity of 15 m/s, making it suitable for high-speed rotating pumps without compromising on sealing effectiveness.
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Applicable Media
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- Water-based Fluids
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Suitable for pure water, cooling water, and various aqueous solutions with a pH range of 2 - 13, effectively handling both acidic and alkaline water-based media.
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- Oil-based Fluids
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Can be used with heavy lubricating oils, hydraulic oils, and some viscous oil-based fluids, providing reliable sealing for oil transfer and circulation systems.
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- Chemical Solutions
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Resistant to many strong acids, alkalis, and organic solvents commonly used in chemical manufacturing, making it ideal for chemical processing applications.
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Installation and Maintenance
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Installation Method
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Axial Installation with Double Sealing Arrangement
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Installed axially onto the pump shaft following a specific double sealing installation procedure to ensure correct alignment and proper functioning of both seal faces.
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Installation Torque
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15 - 22 N·m
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During installation, a torque within this range should be applied to secure the seals in place without causing damage to the delicate seal components.
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Maintenance Cycle
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Every 5000 operating hours
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Regular maintenance is recommended every 5000 operating hours. This includes inspecting both seal faces for wear, checking O-rings for degradation, and ensuring proper alignment and lubrication.
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Storage Conditions
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Store in a dry, dark environment at a temperature between 10ºC - 20ºC. Avoid exposure to dust, moisture, and corrosive gases.
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Proper storage conditions help preserve the quality and integrity of the seal components, ensuring they are in optimal condition when ready for installation.
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Quality and Certification
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Service Life
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Approximately 3 - 4 years under normal operating conditions
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With proper operation and regular maintenance, the Queeny-Type 21 Double seal can provide reliable service for 3 to 4 years, reducing maintenance costs and downtime.
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Leakage Rate
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≤0.05 mL/h
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The double seal design significantly reduces the leakage rate, ensuring minimal fluid loss and enhanced safety in industrial applications.
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Certification Standards
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ISO 9001, ISO 14001, API 682
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The Queeny-Type 21 Double seal complies with ISO 9001 quality management system standards, ISO 14001 environmental management system standards, and API 682 industry standards for mechanical seals, guaranteeing high quality and performance.
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Other Characteristics
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Vibration Resistance
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Can withstand vibrations with a frequency range of 5 - 60 Hz and an amplitude of 0.6 mm.
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Engineered to maintain its sealing performance even in environments with high levels of vibration, ensuring stable operation of the pumping system.
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Self-lubricating Property
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Both seal faces are coated with a special self-lubricating material to reduce friction and wear.
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This self-lubricating feature extends the service life of the seals and improves the overall efficiency of the pumping system by minimizing energy consumption due to friction.
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Shanghai Queeny Mechanical Equipment Co.,Ltd.is an enterprise specializing in the R&D,manufacture and export of mechanical seal products,headquartered in Pudong New Area,Shanghai.Our products mainly include component seals,dry gas seals,metal bellows seals,mixer and agitator seals,single & dual cartridge seals,silicon carbide parts and tungsetn carbide parts,which can replace John Crane, Burg-mann, AES, Chesterton,Flowserve,Rotenand other similar products,they are widely used in water treatment,petroleum,chemical,food,medical and other industries.
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