Flowserve Pac-Seal Type 51 - Manual (Page 2)

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Description
The Pac-Seal Types 51 and 52 are similar to the Types 21 and 31 in
design, with a crimped head and hex-torque drive system but with a
more flexible bellows. The convolution in the seal bellows allows for
greater axial movement and shaft deflection than Types 21 and 31. This
adds flexibility but reduces pressure capability. Both Types 51 and 52 are
available in double seal configurations and balanced versions.
Part Reference Description
2 Seal Drive/Drive Band
14 Stationary Face/Mating Ring
15 Rotating Face/Primary Ring
16 Spring
28 Shell
75 Drive Adapter
142 Retainer/Spring Retainer
157 Bellows Diaphragm/ Elastomer Bellows
2 157 14
15 126 75 16
142
Type 51 Nomenclature Figure 1
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