Mechanical seal and soft packing seal difference

Mechanical seal and soft packing seal difference

Mechanical seals and soft packing seals:

advantage:

1 Sealed reliably In long-term operation, the sealing state is very stable, and the leakage is small. According to rough statistics, the leakage is generally only 1/100 of the soft packing seal;

2 The service life is generally 1 to 2 years or longer in oil and water media, and usually more than half a year in chemical media;

3 friction power consumption, the friction power of the small mechanical seal is only 10% to 50% of the soft packing seal;

The 4-axis or sleeve is substantially free of wear;

5 The maintenance period can be automatically compensated after the long end face wears. Under normal circumstances, frequent maintenance is required.

6 good vibration resistance is not sensitive to the vibration, yaw of the rotating shaft and the deflection of the shaft to the sealing cavity;

7 Wide range of applications Mechanical seals can be used for low temperature, high temperature, vacuum, high pressure, different speeds, as well as a variety of corrosive media and abrasive media.

8 For the “zero leakage” needs of many factories today, the packing cannot meet this requirement; the basic adaptation is wide and the arbitrariness is greater, but for the factory, frequent replacement or maintenance will cause great losses to the factory.

Disadvantages:

1The structure is more complicated, and the manufacturing and processing requirements are high;

2 installation and replacement is more troublesome, and requires workers to have a certain level of installation technology;

3 When an accident occurs, the handling is more difficult;

4 One-time investment is high.