|
|
| Training |
Since the dramatic economical development,
mechanical seals have been increasingly used for sealing rotating
shafts. Today, they are the predominant type of seal found on centrifugal
pumps, compressors, and similar machines. In terms of sealing efficiency
and versatility of application, they represent a significant improvement
over former sealing techniques, for example, gland packing, which
they have now largely displaced.
Mechanical seals are the most versatile type of seal
for rotating shafts. Their main use is on liquid/gas sealing, e,g.,centrifugal
pumps. Mechanical seals are also used on gas/gas applications, e.g., compressor
and agitator shaft seals, but in these cases they are usually deployed as double
seals with liquid injection to provide lubrication of the seal faces. Liquid/liquid
sealing duties occur in such applications as double seals where process fluid
is on one side and barrier fluid on the other. Mechanical seals have largely
replaced soft-packed glands because of low leakage and the absence of a requirement
for routine maintenance.
|
|
