| 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 Number
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QT - 166
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Sealing Principle
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Adopts a face - to - face contact sealing mechanism. The mating rings are precisely machined to ensure a tight seal when in operation. The dynamic ring rotates with the shaft, while the static ring remains stationary, and the sealing is achieved through the continuous contact and relative motion between the two rings.
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Materials
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Dynamic Ring Material: High - quality silicon carbide (SiC), which offers excellent wear resistance, high hardness, and good corrosion resistance. It can withstand harsh operating conditions and maintain stable performance over a long period.Static Ring Material: Graphite - impregnated with resin. Graphite provides low friction coefficient, good self - lubrication, and high thermal conductivity. The resin impregnation enhances its mechanical strength and resistance to chemical corrosion.Spring Material: Stainless steel 316L. This material has good corrosion resistance, high elasticity, and can maintain a stable spring force under various working conditions, ensuring the proper contact force between the sealing rings.
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Dimensions
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Shaft Diameter Range: Applicable for shafts with diameters from 20 mm to 50 mm. This wide range makes it suitable for a variety of machinery and equipment.Overall Dimensions: The outer diameter of the mechanical seal is designed to be compact yet sufficient to accommodate the internal components. For example, when the shaft diameter is 30 mm, the outer diameter is approximately 60 mm, and the width is about 25 mm. The specific dimensions may vary slightly depending on the shaft diameter, but they are optimized for easy installation and reliable operation.
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Operating Conditions
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Temperature Range: Can operate effectively in a temperature range from - 20°C to 150°C. This temperature range allows it to be used in different industrial applications, such as in cooling systems (where the temperature may be relatively low) and in some high - temperature liquid transfer processes (but within the specified upper limit).Pressure Range: It can withstand pressures up to 2.5 MPa. This pressure - bearing capacity makes it suitable for applications where the fluid being sealed has relatively high pressure, such as in some pumping systems and hydraulic equipment.Rotational Speed: The maximum rotational speed is 3000 rpm. This speed limit ensures that the mechanical seal can maintain its sealing performance during high - speed rotation of the shaft without excessive wear or leakage due to centrifugal forces.
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Leakage Rate
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The leakage rate is extremely low, typically less than 0.01 mL/h under normal operating conditions. This low leakage rate is crucial for applications where fluid conservation and environmental protection are important, as it helps to prevent the loss of valuable fluids and potential pollution.
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Installation Requirements
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Shaft Alignment: The shaft must be accurately aligned before installing the mechanical seal. Misalignment can cause uneven wear of the sealing rings and lead to premature failure. The allowable misalignment is within ±0.05 mm.Cleanliness: The installation environment and the components of the mechanical seal must be kept clean. Any foreign particles or contaminants can damage the sealing surfaces and increase the leakage rate. Thorough cleaning of the shaft, housing, and all seal components is required before installation.
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Maintenance and Service Life
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Maintenance Interval: Regular inspection is recommended every 1000 operating hours. During the inspection, check for any signs of wear on the sealing rings, spring deformation, or leakage. Replace the seal if necessary.Service Life: Under normal operating conditions, the service life of the QT - 166 mechanical seal is approximately 8000 - 10000 hours. However, this can be affected by factors such as the nature of the fluid being sealed, operating temperature, pressure, and shaft vibration.
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Application Fields
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Widely used in industries such as chemical, petrochemical, pharmaceutical, and food and beverage. In the chemical industry, it can be used to seal various corrosive chemical liquids; in the pharmaceutical industry, it ensures the sterility and integrity of the fluid transfer process; in the food and beverage industry, it meets the hygienic requirements for sealing fluids used in production lines.
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