Flowserve MSS User Manual
Page 14
14
6.19 Install the stationary face halves
around the shaft with the lapped face outward
(non-lapped face is identified with a groove or part marking) away from the seal
chamber face. Insert the stationary face into the gland bore and nest it in the O-ring
6
while making sure there is no sealing face mismatch at joints. If mismatch is
present, gently remove it.
!
Be sure the stationary face joints are in line with the gland ring joints.
6.0 Bond and lubricate the second stationary face mounting O-ring
6
around the
shaft as in Step 6.14 and place it over the stationary face outer shoulder.
6.1 Securely attach the retainer halves
RP
to the face of the gland using cap screws
K3
while positioning the retainer over the outer stationary face mounting O-ring.
6. Tighten the shoulder screws
K
in the gland ring halves
1
while feeling for sea-
ling face mismatch at the stationary face joints. If any mistach ocurs, loosen the
shoulder screws
K
and shift the stationary face halves to remove the mismatch
then continue with tightening the shoulder screws.
6.3 Insert the plastic centering device
M
between the insert ID and the shaft.
6.4 Tighten the gland fastening nuts or bolts holding the gland to the seal chamber to
30 lb-in (3.4 Nm) maximum torque while feeling for seal face mismatch at stationary
face joints. If any mismatch exists, loosen gland fastening nuts or bolts and shoul-
der and retighten the nuts or bolts.
!
Do not overtighten the gland fastening nuts or bolts as overtightening on some
equipment may cause the stationary face to distort which may result in leakage
at the sealing faces. It is not necessary for the gland to have metal-to-metal con-
tact with the seal chamber face for the inner stationary face mounting O-ring to
form a seal. The gland face must, however, be square with the axis of the shaft
to within 0.00“ FIM (0,5 mm).
6.5 Remove the centering device
M
. Retain it for use with the spare parts kit.
6.6 Mount the rotating seal face halves
3
around the shaft and fasten them together
using the cap screw
K
provided, tighten to a 30 lb-in (3.4 Nm) torque maximum.
Check for seal face joint mismatch. If any mismatch exists, loosen the cap screws
and shift the rotating face halves until no mismatch is felt. Retighten the cap.
6.7 Clean the rubbing faces of the rotating and stationary face with alcohol and place
the rotating face so that its rubbing face is against the stationary rubbing face. See
Step 6.9.
6.8 Position the split shaft packing O-ring
P
around the shaft and bond the joint ends
together as in Step 6.14. Lubricate the O-ring with the silicone lubricant provided
and push the O-ring into the seal ring bore. See Step 6.10.