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The
savvy seal designer recognizes both the possible
uses and the inherent limitations of a given
product. Though the standard
shaft seals shown previously are ideal
for a wide variety of applications, they are
not the best solution to every design problem.
Since
trying to force a standard shaft
seal to perform beyond its capabilities can
only lead to failure, you will probably be faced
from time to time with difficult or unusual situations
that require you to consider other seal cross-sections.
Or, perhaps you can save money or simplify installation
while still satisfying an application’s needs
by using a different design.
What
follows is information on other sealing options
that operate in place of (or in addition to) standard
shaft seals. Each alternative has both advantages
and disadvantages, so the specific needs of your
application will always dictate which one is best
for you. Familiarity with your options, however,
should make the choice somewhat easier.
DOUBLE
LIP SEALS
HYDRODYNAMIC SEALS
FLANGE SEALS
UNITIZED (CASETTE)
SEALS
TRIPLE LIP (MUD)
SEALS
ROTATING BORE
SEALS
HIGH ECCENTRICITY
SEALS
PTFE SEALS
AXIAL DIRT LIP
SEALS
HIGH PRESSURE
SEALS
LINEAR (RECIPROCATING)
SEALS
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“Though
the standard shaft seals shown previously are
ideal for a wide variety of applications, they
are not the best solution to every design problem.”
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