Mechanical seals have become essential in various industries, including refineries and wastewater plants, due to their effectiveness in reducing environmental contamination. They consist of seal faces, an energizer, and secondary seals, which prevent leakage in fluid pumps and have largely replaced traditional braided packing. As environmental concerns grow globally, the use of mechanical seals is expected to increase further, providing customized solutions for different industrial applications.

1. MECHANICAL SEAL
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In today’s industrial
environment, the purpose and
usage scenario of mechanical
seal and accessories are
growing. Environmental
contamination has been a
growing concern in the United
States and Europe for decades,
and in each of those decades
the Environmental protection
agency (EPA) has made the
allowed leakage of
environmental contaminants
increasingly strict. Mechanical
Seals have played a large part
in reducing the emission once
only slowed by braided packing
which had to leak to function.
Mechanical Seals have
become a standard for
Refineries, Chemical plants,
waste water plants, Ships, and
other critical leakage control
industries, as well as
applications applicable to the
every day consumer including
automobile water pumps, and
swimming pool pumps. They
offer exceptional leakage
control, and have increasingly
replaced braided packing.
Usage of mechanical seals will
only expand as environmental
hazards in developing nations
become larger issues and need
to be addressed.

2. A Mechanical Seal has 3 primary design characteristics
1. Seal faces
2. An Energizer
3. Secondary seals
Mechanical Seal Characteristics:Seal faces
which are lapped flat to within
2 - 3 light bands. Making the
seal face flat within millionths
of an inch. Since both faces are
lapped flat and then pressed
together it effectively seals our
any fluid (other than a very
thin film) from leaking
between them.
An Energizer
Secondary Seals
It’s done using a single
spring, multiple springs,
wave springs, metal bellows
or even o-rings or internal
pressure, but one of the
above must be used to create
a force pressing seal faces
together preventing leakage
from between the seal faces.
While seal faces seal perpendicular to the
shaft, secondary seals are necessary to seal
parallel to the shaft. Those seals include
rubber boots, common to industry standard
type 1, 2, 21, 6 and 6A seals. O-Rings
made of a variety of elastomers including
Buna-N, Viton, Aflas, Kalrez, Chemrez,
Amerirez, PTFE, SBR, Neoprene, and
FEP encapsulated o-rings. Gaskets made
or the same elastomers as above, along
with Flexible Graphite, and Compressed
non-asbestos materials. In the case of high
temperature metal bellows seals Flexible
Graphite wedges are used to seal the pump
sleeve/shaft.

3. An Introduction
When choosing an industry and manufacturer to supply the equipment, it is always wise to go
for the one who has solid experience in the industry. With decades of experience,
professionals can deliver both ready-made and custom made sealing solutions. Modern day
mechanical seals are an integral part on all fluid pumps and are a viable alternative for lip
seals as well as packed glands. In practical applications, using these seals has been proven to
increase pump longevity and make them usable for extended periods of time. Based on the
load the pump is expected to bear, the size of the seal and the overall design will vary from
one product to another. Materials used to manufacture them will also be customized
according to individual or industrial needs.
You can find many more Mechanical Seal and
Packing online from www.sealsales.com