Installation, Operation, & Maintainance Guide
Style RKCS/D
SEAL INSTALLATION
Style RKCS/D cartridge seals entail the same simple
installation procedure as other Flexaseal cartridge
seals. Ensure alignment verification of equipment
has been completed prior to starting the installation
procedure. Review engineering prints for special
notes and/or instructions.
•
It is essential to use a suitable lubricant
when installing a seal, as different
lubricants will work better with different
elastomers.
1
. Disassemble the pump until the seal chamber
and shaft are accessible.
2
. Remove the seal from its packaging and
inspect for damage to any components and
seal faces.
Cartridge seals are shipped from Flexaseal
fully assembled and should not be
disassembled without cause. If a seal
appears damaged prior to installation,
contact a Flexaseal representative.
Grease, scratches, or nicks on the seal
faces may cause leakage.
3
. Ensure the shaft and seal housing have been
properly cleaned as described in the
preparation section.
4
. Lightly lubricate the seal sleeve O-ring with a
suitable and compatible lubricant.
5
. Gently slide the seal on the shaft with the gland
gasket facing, but clear of the seal chamber.
6
. Reassemble the pump as described by the
pump OEM.
7
. If the gland is equipped with a gland gasket,
lubricate gland bolts and bolt the gland to the
seal chamber using the Legacy Method (Star
Pattern). Be sure not to overtighten the gland
bolts as this may distort the gland and internal
components resulting in seal leakage.
For mechanical seals with a register fit or a
metal-to-metal mate with the seal chamber,
standard torque-tension specifications for
bolts and studs is sufficient.
8
. Alternately tighten the provided set screws to
the specified torque value according to the
table below.
9
. Loosen the bolts retaining the setting clips,
slide clips outward and re-tighten the bolts so
the clips are retatined for use in future seal
removal or impeller adjustment.
Cup Point Set Screw Torque Specifications
Screw Size Alloy Steel
Stainless Screw Size Alloy Steel Stainless
#10
36 in.-lbs.
26 in.-lbs.
M4
2.0 N-m
1.5 N-m
1/4
87 in.-lbs.
70 in.-lbs.
M6
7.9 N-m
6.1 N-m
5/16
165 in.-lbs. 130 in.-lbs.
M8
19.6 N-m
15.4 N-m
3/8
290 in.-lbs. 230 in.-lbs.
M10
37.0 N-m
29.5 N-m
1/2
620 in.-lbs. 500 in.-lbs.
M12
60.3 N-m
48.3 N-m
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