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Though
standard shaft
seals can be effective in normal reciprocating
applications, severe reciprocating applications
in which oil or oil-water mixes must be retained
typically require non-standard designs.
The TB4
design shown in Figure 98 is
one example of a reciprocating
seal. Note that it features a stepped, spring-loaded
primary
sealing lip as well as a secondary exclusion
lip. The TB4 can handle pressures up to 100 psi (7
kg/cm2).
Figure
99 shows a TC4 design,
which is similar to the TB4 but with a rubber
rather than metal O.D. The
TC4 can also handle pressures up to 100 psi.
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 98 & 99
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