General Information |
|
Model Number |
QT - H7N |
Application |
Suitable for a wide range of industrial pumps, compressors, and other rotating equipment in chemical, petroleum, and power generation industries. |
Dimensions |
|
Shaft Diameter Range |
20 - 100 mm |
Outer Diameter |
35 - 120 mm |
Width |
15 - 30 mm |
Materials |
|
Seal Face Material |
Silicon carbide (hard) and carbon graphite (soft). The silicon carbide seal face has a hardness of approximately 2500 - 3000 HV, providing excellent wear - resistance. The carbon graphite seal face has a density of about 1.7 - 1.9 g/cm³, offering good self - lubricating properties. |
Secondary Seal Material |
A high - performance elastomer. It has a Shore A hardness of 70 - 80, which ensures a reliable seal and good flexibility. |
Metal Parts Material |
Stainless steel (AISI 316). It has a tensile strength of 485 - 655 MPa and a yield strength of 205 - 310 MPa, providing high corrosion resistance and mechanical strength. |
Operating Conditions |
|
Pressure Range |
0 - 10 MPa. The seal can maintain its sealing performance within this pressure range, suitable for both low - pressure and high - pressure applications. |
Temperature Range |
- 40°C to 200°C. The materials used in the seal are selected to withstand a wide temperature range, ensuring stable operation in different environments. |
Speed Range |
0 - 30 m/s. This speed range allows the seal to be used in various rotating equipment with different rotational speeds. |
Performance Characteristics |
|
Leakage Rate |
Less than 5 ml/h under normal operating conditions. This low leakage rate ensures the safety and environmental - friendliness of the equipment. |
Friction Coefficient |
0.1 - 0.2. A relatively low friction coefficient reduces energy consumption and wear of the seal faces. |
Service Life |
More than 20,000 hours under normal operating conditions. This long service life reduces maintenance frequency and costs. |
Installation Requirements |
|
Installation Clearance |
The radial clearance between the seal and the shaft should be 0.1 - 0.3 mm, and the axial clearance should be 0.2 - 0.5 mm. |
Installation Torque |
For the bolts used in the seal installation, the torque should be in the range of 10 - 20 N·m, ensuring a proper installation without over - tightening or under - tightening. |
Testing Standards |
|
Pressure Test |
The seal is tested at 1.5 times the maximum operating pressure for 30 minutes, and no visible leakage is allowed. |
Temperature Cycle Test |
The seal is subjected to 10 temperature cycles from - 40°C to 200°C, and its performance should remain stable after the test. |