Flowserve MSS Series - Manual (Page 6)

2.4 Position the gland ring halves 11 around the shaft with the
counter-bore facing the stationary face. Place the gland halves
around the stationary face and fasten them together using the
shoulder screws 414.1 provided. Be sure the gland ring joints are in
line with the stationary face joints and the two bolt holes are in
line with the bolt holes or studs in the seal chamber face. While
tightening the shoulder screws, feel for sealing face mismatch at the
stationary face joints. If any mismatch occurs loosen shoulder screws
414.1 and shift the stationary face halves until no mismatch is felt and
continue with tightening shoulder screws.
Note : Do not attempt to remove sealing face mismatch with the gland
joint shoulder screws 414.1 fully tightened. Doing so may
damage the stationary face.
2.5 Carefully fasten the gland to
the seal chamber by tightening
the gland fasteners to a 3.4
N-m (30 lb-in) maximum torque
while feeling for sealing face
mismatch at the stationary face
joints. If any mismatch occurs,
loosen the gland fasteners and
shoulder screws 414.1 and repeat
steps in 2.4 to remove sealing
face mismatch. Then proceed with
tightening gland fasteners while
again checking for sealing face mismatch.
Important: Do not overtighten the gland nuts or bolts as over-tightening
on some equipment may cause the stationary face to distort which may
result in leakage at the sealing face. It is not necessary for the gland to
have metal-to-metal contact with the seal chamber face for the inner
stationary face O-ring to form a seal. The stationary face must,
however, be square with the axis of the shaft to within 0.020 inch FIM.
2.6 Mount the rotating seal face halves 15 around the shaft and fasten
them together using the cap screws 40 provided, tighten to a 3.4 N-m
(30 lb-in) torque maximum. Check for seal face joint mismatch. If any
mismatch exists, loosen the cap screws and shift the rotating seal face
halves until no mismatch is felt. Retighten the cap screws.
Note: There are threads on both halves of the rotating seal face.
Align halves carefully so as to not allow a gap between halves
during tightening.
6
Fasten the gland ring to the
seal housing
Step 2.5