Mechanical seal with relatively soft packing seal

Mechanical seal with relatively soft packing seal, has the following advantages:

① reliable sealing in the long run cycle, the sealing state is very stable, very small leak, according to rough statistics, the leakage is typically only a soft packing seal 1 / 100;

② long life in oil, water media category in general up to 1 to 2 years or more, usually in the chemical medium can be more than six months;

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

④ largely unaffected by the shaft or sleeve wear;

⑤ face wear after a long maintenance cycle can be automatically compensated, under normal circumstances, without regular maintenance;

⑥ good vibration vibration of the axis of rotation, shaft deflection and the deflection of the sealed chamber is not sensitive;

⑦ apply to a wide range of mechanical seals can be used for low-temperature, high temperature, vacuum, high pressure, different speeds, and a variety of corrosive media and abrasive media, such as with the seal.
cable tray accessories, wire cable baskets, metal cable trays
⑧ for many of today's factory, "zero leakage" needs, packing can not achieve this requirement; simply adapt to a wide range of more arbitrary, but in the factory, the factory will be frequently changed or maintenance caused great losses.
But its disadvantages are:
① structure is more complex, manufacturing and processing requirements;
② cumbersome to install and replace, and require workers to have a certain level of technology installed;

③ When the accident occurred chance to deal more difficult;
④ high one-time investment.