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Because
of the potentially damaging effects of outside
contamination on shaft
seal lips, studies have been conducted to try
to determine the most effective excluder lip designs.
Compared with other designs (including single and
dual radial
dirt lips), axial
dirt lips proved the most effective. The seal
shown in Figure 90 features
an axial dirt lip in combination with dual radial
dirt lips and a spring-loaded
primary
lip. Figure 91 shows
a seal with an axial dirt lip and a spring-loaded
primary lip.
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.”
Figures 90 & 91
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