Flowserve Single Inside Pusher Type Seal - Manual (Page 4)

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2.9 Set the back of the spring holder at reference mark B, Figure 1,
and tighten set screws firmly and evenly. The rotating component
assembly is now in the proper position to provide the correct setting
and spring compression for final assembly.
2.10 Wipe the seal faces clean with alcohol before completing
equipment assembly. Seal faces should not be lubricated, but
should be left clean and dry.
2.11 Assemble the pump.
2.12 Position the gland to the face of the seal housing. Be sure the
gland pilot is properly engaged. Tighten the gland stud nuts
evenly, cross stagger the adjustment of the nuts. Follow the
equipment manufacturer's recommendations for gland stud nut
torque. In the absence of recommendations, gland nuts should
only be torqued to establish a leak tight seal at the gland gasket.
Proper gland bolt adjustment is especially important with clamp
style stationary faces where excessive torque may damage the
face.
2.13 See Operational Recommendations before starting pump.
3 Double Suction and Multistage Horizontal Split
Case Pumps (2 boxes)
3.1 Scribe mark A on the shaft or sleeve to line up with the face of
the seal housing.
3.2 Scribe mark B at the seal setting point shown enclosed in a
rectangular box on the assembly drawing included with the seal.
This seal setting dimension is measured from the face of the
seal housing to the back of the spring holder. The back of the
spring holder will be located at this point.
3.3 Lubricate the shaft or sleeve lightly with silicone lubricant
provided with the seal before installing any seal parts.
3.4 Install the rotating face gasket into the bore of the rotating face.
3.5 Install the rotating seal components on the shaft or sleeve in the
proper sequence. Handle PTFE U-cup rings and Durafite rotating
face gaskets with extreme care. PTFE U-cup rings must be
assembled individually and not pushed on the shaft or sleeve while