| General Information |
|
| Seal Model |
Queeny-ST |
| Application Scope |
Ideal for use in various industrial pumps, agitators, and centrifuges across industries such as pharmaceuticals, food processing, and water treatment. Also suitable for applications where high reliability and low leakage are critical. |
| Physical Properties |
|
| Density |
2.3 g/cm³ |
| Hardness |
75 Shore D (approximate, may vary slightly depending on specific manufacturing batch) |
| Color |
Dark gray |
| Mechanical Performance |
|
| Maximum Working Pressure |
Up to 12 bar (174 psi) |
| Maximum Rotational Speed |
30 m/s |
| Operating Temperature Range |
-30°C to 180°C (-22°F to 356°F) |
| Geometric Dimensions |
|
| Inner Diameter (ID) Sizes Available |
15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm |
| Outer Diameter (OD) Corresponding to ID |
For each inner diameter, the outer diameter is calculated based on a standard radial width of 6 - 12 mm, depending on the size of the ID. For example, for an ID of 20 mm, the OD is approximately 32 mm with a radial width of 6 mm. |
| Thickness |
4 mm for ID < 50 mm; 6 mm for 50 mm ≤ ID < 100 mm; 8 mm for ID ≥ 100 mm |
| Sealing Face Properties |
|
| Surface Roughness (Ra) |
0.15 - 0.3 µm |
| Flatness Tolerance |
±0.0003 mm |
| Materials of Construction |
|
| Seal Face Materials |
The rotating seal face is made of high-quality carbon graphite, providing excellent self-lubricating properties. The stationary seal face is composed of silicon carbide, known for its high hardness and wear resistance. |
| Secondary Sealing Element Material |
An elastomer with excellent chemical resistance to a wide range of substances, suitable for different working media. |
| Metal Components Material |
Stainless steel (AISI 316L) for enhanced corrosion resistance in various chemical environments. |
| Chemical Compatibility |
|
| Compatible Fluids |
Water (including deionized water), weak acids (such as acetic acid up to 20% concentration), weak alkalis (such as sodium hydroxide up to 15% concentration), and many organic solvents like ethanol and propanol. |
| Incompatible Fluids |
Strong oxidizing agents like concentrated nitric acid, and substances with extremely high viscosity that may impede the proper functioning of the seal. |
| Installation and Maintenance |
|
| Recommended Installation Torque for Bolts (if applicable) |
12 - 25 Nm, depending on the size of the bolts and the specific installation requirements. |
| Lubrication Requirements |
A thin layer of a compatible lubricant should be applied to the seal faces and secondary sealing elements during installation to ensure smooth operation and prevent initial wear. |
| Maintenance Interval |
Under normal operating conditions, a visual inspection every 3 months is recommended. A more comprehensive inspection and possible replacement of the seal should be carried out every 8 - 10 months. |
| Testing and Quality Assurance |
|
| Pressure Testing |
The seal is subjected to a pressure test at 1.8 times the rated working pressure for 45 minutes to ensure its integrity. |
| Leakage Testing |
The maximum allowable leakage rate is set at 0.08 ml/h under standard test conditions. |
| Dimensional Inspection |
All geometric dimensions are verified to be within a tolerance of ±0.03 mm during the manufacturing process. |
| Performance Characteristics |
|
| Friction Coefficient |
0.12 - 0.18 under normal operating conditions |
| Wear Rate |
Less than 0.0008 mm/year when operating within the specified parameters. |
| Certifications |
|
| ISO 9001:2015 Certified Manufacturing Process |
|
| CE Marked for Compliance with European Safety and Performance Standards |
|
Audited Supplier 
){kind=link}