Flowserve Pac-Seal Type 21 - Manual (Page 2)

2
Description
Pac-Seal Types 21 and 31 feature uniquely designed crimped heads
and hex-torque drive systems that provide a solid engineered advantage
over other seal types. The Type 31 is the Pac-Seal designation for the
Type 21 seal with hard face combination. Generally these are reserved
for severe duty applications, in the Type 21 design envelope. Both Types
21 and 31 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
126 Gasket/Elastomer Cup/Cup Gasket
142 Retainer/Spring Retainer
157 Bellows Diaphragm/ Elastomer Bellows
2 157 14
15 126 28 16
142
Type 21 and Type 31 Nomenclature Figure 1