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Standard shaft
seals will typically fail in applications
with excessive shaft vibrations
or dynamic
run-out. Non-standard designs with convoluted
lips can often overcome this problem by providing
increased followability in
the radial direction. An example of such a convoluted-lip
design is shown in Figure 85.
Keep
in mind that, though high eccentricity seals can
often withstand excessive run-outs for short periods
without leakage, they are not intended to function
indefinitely. Attention should always be given
to proactively reducing shaft eccentricities when
possible as a means of precluding the need for
a special seal design.
NON-STANDARD
DESIGNS MAIN PAGE
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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.”
Figure 85
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