| General Information |
|
| Seal Type |
Rubber - based Mechanical Seal |
| Application |
Widely used in pumps, valves, and other rotating or reciprocating machinery in various industrial sectors such as chemical, food processing, and oil & gas industries where moderate chemical resistance and sealing performance are required. |
| Physical Properties |
|
| Density |
1.8 g/cm³ |
| Hardness |
70 Shore A (± 5) |
| Tensile Strength |
10 MPa |
| Elongation at Break |
200% |
| Compression Set |
After 24 hours at 150°C, compression set is less than 30% |
| Mechanical Performance |
|
| Pressure Rating |
Maximum operating pressure: 8 bar (116 psi) for static sealing
Maximum operating pressure: 5 bar (72.5 psi) for dynamic sealing |
| Speed Limit |
For rotating applications, maximum linear speed is 15 m/s |
| Temperature Range |
Operating temperature range: -20°C to 180°C (-4°F to 356°F) |
| Geometric Dimensions |
|
| Inner Diameter (ID) |
Available sizes range from 10 mm to 300 mm with an increment of 5 mm for standard types |
| Outer Diameter (OD) |
Calculated based on ID and the specified radial thickness. Standard radial thickness is 5 - 10 mm depending on the application requirements |
| Thickness |
For flat seals, thickness is 3 mm to 8 mm. For O - rings, the cross - sectional diameter is available in 2.65 mm, 3.53 mm, 5.33 mm, etc. |
| Sealing Face |
|
| Surface Finish |
For mating surfaces with the rubber seal, the surface finish should be Ra ≤ 0.8 µm for optimal sealing performance |
| Flatness |
In static applications, the flatness tolerance of the mating surfaces is within 0.05 mm |
| Materials of Construction |
|
| Main Sealing Element |
Special synthetic rubber with excellent chemical and heat resistance properties |
| Secondary Sealing Elements (if applicable) |
Other elastomers with complementary properties for enhanced sealing in complex applications |
| Metal Parts |
Stainless steel (AISI 316) for metal components in contact with the rubber seal to prevent corrosion |
| Chemical Compatibility |
|
| Compatible Fluids |
Water (both fresh and seawater), most hydrocarbons (such as gasoline, diesel, and lubricating oils), mild acids (e.g., acetic acid up to 10% concentration), and alkalis (e.g., sodium hydroxide up to 10% concentration) |
| Incompatible Fluids |
Strong oxidizing agents (such as concentrated nitric acid), highly polar solvents (e.g., acetone in high concentrations) |
| Installation and Maintenance |
|
| Installation Torque |
When installing metal parts associated with the seal (e.g., bolts for flanges), the recommended torque is 12 - 18 Nm |
| Lubrication |
Use a compatible lubricant (such as silicone grease) during installation to facilitate positioning and reduce friction |
| Maintenance Interval |
In normal operating conditions, the seal should be inspected every 3 - 6 months. Replace the seal if signs of wear, cracking, or swelling are observed |
| Testing and Quality Assurance |
|
| Pressure Test |
The seal is subjected to a hydrostatic pressure test at 1.5 times the rated pressure for 60 minutes. No leakage should be observed during this test |
| Leakage Test |
For dynamic applications, the maximum allowable leakage rate is 0.2 ml/h. For static applications, the leakage should be negligible |
| Dimensional Inspection |
All dimensions of the seal are inspected before shipment. The tolerance for ID and OD is ± 0.1 mm, and for thickness is ± 0.05 mm |
| Performance Characteristics |
|
| Friction Coefficient |
Against smooth metal surfaces, the friction coefficient of the rubber seal is approximately 0.3 - 0.5 |
| Wear Rate |
Under normal operating conditions, the wear rate of the seal is less than 0.002 mm/year |
| Certifications |
|
| ISO 9001:2015 certified manufacturing process |
|
| Compliant with relevant industry standards for safety and performance |
|
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