Flex-A-Seal STYLE 60 Owner's manual

INSTALLATION,
OPERATION &
MAINTENANCE
GUIDE
STYLE 60/62/65
Headquarters Brazil Gulf Coast Texas
291 Hurricane Lane Rua Javaés, 441/443 1719 South Sonny Avenue 7545 E. Orem Drive
Williston, VT 05495 Bom Retiro, Sao Paulo Gonzales, LA 70737 Houston, TX 77075
Brazil CEP 01130-010
TEL: [phone] TEL: [phone] TEL: [phone] TEL: [phone]
FAX: [phone] FAX: [phone] FAX: [phone]
REVISED: February 2021

Installation, Operation, & Maintainance Guide
Style 60/62/65
OVERVIEW
This guide outlines the installation, operation and maintenance of the Style 60/62/65 high temperature rotatary
bellows head assembly. This guide, in addition to the manuals provided by the pump manufacturer and the
manufacturer of any auxiliary equipment, should be read in its entirety prior to installation.
NOTICE
Flexaseal does not assume responsibility for misuse, or any damages incurred as a result of the misuse of the
supplied sealing system. Contact a Flexaseal representative before making any changes to the provided system
or design.
SAFETY
1. Read all instructions thoroughly prior to
beginning installation.
2. Removal, installation, operation, and
maintenance must only be carried out by
qualified personnel who have thoroughly read
all instructions.
3. The seal must only be used for its intended
application. Flexaseal cannot be held liable for
use outside the scope of the recommended
application.
4. Inspect the replacement seal prior to removal
of the old seal or installation of the new seal
using the technical information provided in this
document. Contact a Flexaseal representative
if there are any questions.
5. Follow plant safety regulations and procedures
throughout the disassembly/installation process
including, but not limited to, the following:
•Lockout/tagout procedures
•SDS consultation for any hazardous
materials involved
•Use of proper personal protective
equipment
•Relief of any system pressure and
mechanical energy
6. The following symbols have been used
throughout the document to highlight important
information:
Instructions intended to prevent damage to
the seal or equipment.
Mandatory instructions intended to prevent
personal injury or extensive damage to
equipment.
Information to note while installing, or for
later use.
Style 60/62/65 Maximum Operating Conditions
Temperature 800◦F (425◦C)
Pressure 300 psi (20 bar)
Speed 4500 fpm (22 m/s)
•Maximum temperature, pressure, and speed indicate operating extremes independently and
do not imply the seal will function at these extremes at the same time. Contact Flexaseal if in
doubt.
Page 1 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
PREPARATION
•Verify that equipment has been properly
shut off and rendered inoperative according
to plant safety protocol (e.g. lockout/tagout
procedures).
1. Disassemble the pump seal chamber, in
accordance with the pump OEM instructions, to
expose the existing seal.
Document how the seal chamber is
disassembled for re-assembly.
2. Carefully remove the existing seal rotary and
stationary assemblies, taking care not to
damage the shaft or seat counterbore.
3. Clean the shaft, shaft sleeve (if present), seal
chamber face, and seat counterbore surfaces
of rust, burrs, grit, sharp edges, and set screw
damage using fine emery cloth. Wipe clean.
Avoid making flat spots, reducing shaft
diameter, or increasing seat bore diameter.
4. If the pump is equipped with a shaft sleeve,
verify the condition of its O-ring or gasket and
ensure that it is properly located (fully engaged
against step/hook/snap ring).
5. Sealing surfaces and the shaft or shaft sleeve
must have at least a 63 Ra-µin surface finish as
seen in Figure 1.
6. For ease of installation, the leading edge of the
shaft or sleeve should be chamfered as shown
in Figure 1 and all parts should be deburred.
(B) BORE ID
(A) SLEEVE OD
.030 MIN. x 30°
63
63
63
Figure 1: Surface finish and chamfer locations. Fully assembled pump without seal.
Page 2 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
VERIFICATION
Successful operation of a Style 60/62/65 high temperature rotating welded metal bellows head is contingent on
conforming equipment dimensions and alignment. Verify the following prior to continuing:
Figure 2: Shaft Runout Figure 3: Bearing Fit Figure 4: Bearing Frame
Perpendicularity
Figure 5: Axial Shaft
Movement
Figure 6: Seal Chamber
Bore Concentricity
Figure 7: Seal Chamber
Face Squareness
Maximum Alignment Variation (TIR)
Fig. 2Radial shaft movement (shaft runout) 0.0015–0.003 in.
Fig. 3Radial bearing fit 0.002–0.003 in.
Fig. 4Bearing frame perpendicularity 0.0005 in./in.
Fig. 5Axial shaft movement (end play) 0.003 in.
Fig. 6Seal chamber bore concentricity 0.005 in.
Fig. 7Seal chamber face squareness 0.0005 in./in.
For proper function and satisfactory operation of the seal it is imperative that connections, dimensions, finishes,
and alignments are all acceptable based on the specified design. If measured values exceed the values given
above, adjust the equipment to meet the specifications before installing the seal. These values are general
guidelines and the pump OEM should be used to verify acceptable values whenever possible.
Page 3 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
LAYOUT
•If the seal is being installed on equipment without a preset step, snap ring groove, etc. use
the procedure described below to mark the reference distance (using values found on Page
8), otherwise this section can be used to verify the distance of the existing geometry. Ensure
that the seal’s shaft packing is not mounted on any part of a step or groove prior to final
installation.
Style 60/62/65 high temperature bellows rotaries are exclusively intended for
inside-mounted use. Do not mount outside of the seal chamber.
1.Do not scratch the shaft or sleeve when scribing during the layout procedure.
Figure 8: Fully assembled pump without seal
#1
Figure 9: Layout dye application and scribe
#2 #1
GLAND
GLAND GASKET
L
MATING RING
Figure 10: Measure seal face location
#2 #1
Figure 11: Scribe location of seal face
#2 #1 #3
C
Figure 12: Setting length scribe
#2 #1 #3
.050 REF.
Figure 13: Assembled seal chamber
Page 4 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
To scribe the correct locations for the component seal setting length use the following procedure:
1. Reassemble the pump, including the shaft sleeve, seal chamber cover, and impeller as shown in Figure 8.
After adjusting the impeller, apply layout dye to the shaft (or shaft sleeve) at the face of the seal chamber,
and scribe a line in the dye showing the location of the chamber face as shown in Figure 9.
2. Measure the distance from the stationary mating ring face to the seal chamber face. This can be
accomplished by simply measuring the distance from the top of the gland gasket to the mating ring as
seen in Figure 10. The future location of Line #2 is shown as a reference for the reader.
3. Disassemble the pump and apply layout dye at the approximate location of the seal face. Measure the seal
face distance (L) from Line #1 and scribe Line #2 into the dye as shown in Figure 11.
4. From the seal face location, measure back along the shaft to the specified operating length (C) and scribe
a third line (Line #3, Figure 12).
SEAL INSTALLATION
Complete the layout and marking of the shaft for
installation as described earlier before beginning
installation. A complete assembly should resemble
Figure 13.
1. Remove the seal from its packaging and
inspect for damage to any components and
seal faces.
Grease, scratches, or nicks on the seal
faces may cause leakage.
2. Ensure the shaft and seal housing have been
properly cleaned as described in the
preparation section.
3. Evenly press the mating ring into the gland. Be
careful to keep the face clean and use a
suitable and compatible cleaning solvent if the
face gets smudged or dirty.
4. Gently position the gland with installed mating
ring on the shaft facing, but clear of, the seal
chamber.
Be careful to not damage the mating ring
while setting the gland into position.
5. Separate the drive hub, packing, and bellows
assembly by removing the cap screws from the
drive hub.
6. Slide the bellows assembly along the shaft until
it is just past Line #2.
7. Lightly lubricate the shaft packing with a
suitable and compatible lubricant. Slide the
drive hub and packing on the shaft in the
proper orientation facing the end of the bellows
assembly (Figure 14).
8. Position the back of the drive hub to line up
with the setting length scribe line (Line #3).
9. Fix the drive hub in position by alternately
tightening the provided cup point set screws to
the recommended torque values in the table
below (Figure 15).
10. Bring the packing and bellows assembly back
to the drive hub. Use the socket head cap
screws to draw in and compress the packing
until the specified 0.050 in. setting gap is
achieved (Figure 16).
11. Ensure the seal faces are clean and dry using
a suitable and compatible cleaning solvent for
the face material and elastomers.
12. Reassemble the pump according to OEM
specifications.
13. Bring the gland with the mating ring installed
into position and make sure that it mounts
concentric to the shaft.
Page 5 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
14. Bolt the gland to the seal chamber using the
Legacy Method (Star Pattern) according to
torque requirements specified in the pump
OEM. If they are not specified then tension the
bolts using the Legacy Method in even 1/4 turn
increments until a gland seal is achieved. Be
sure not to overtighten the gland bolts as this
may distort the gland and mating ring resulting
in seal leakage.
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
#2 #1 #3
Figure 14: Step 7.
#2 #1 #3
Figure 15: Step 9.
.050 REF.
#2 #1 #3
Figure 16: Step 10.
BEFORE STARTING THE EQUIPMENT
1. Ensure the pump shaft is properly aligned at
the coupling with the motor.
2. Check that all gland plate bolts and all screws
are securely fastened.
3. Once the pump is reassembled, turn the shaft
by hand if possible to check for free rotation, if
not, recheck installation.
4. Verify that all plumbing and piping plans for the
seal are connected and configured according
to best practice.
5. Flood the pump, vent all air from the seal
chamber, and check the seal for leakage.
6. Ensure all plumbing and venting are free of
obstruction and that the chamber is filled with
liquid. Check that all alarms connected to
auxiliary systems are properly functioning to
alert personnel if any issues arise.
Dry-running is a major cause for leakage
and/or failure of mechanical seals. It is
imperative that the seal chamber be
completely vented prior to startup and that
adequate lubrication is supplied to the seal.
7. Start the pump per the pump manufacturer’s
recommendations, observe for proper
operation, and check for excessive heat at the
seal gland.
Check periodically during operation to
ensure that the seal is not overheating.
OPERATION & MAINTENANCE
If leakage is detected, it should be addressed as soon as possible to prevent hazards and protect personnel.
Leakage could come from a number of leak paths in the seal, or be caused by changes in the pump operation or
condition. Although seals should be inspected regularly for signs of leakage, a properly selected and functioning
mechanical seal will run for extended durations without need for extra attention and should not be disturbed
Page 6 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
unnecessarily (i.e. shut down and disassembled without cause). Below is an inexhaustive list of possible causes
of leakage.
Primary Causes
•Worn seal faces
•Damaged bellows
•Damaged grafoil packing
•Damaged metal wedge
Secondary Causes
•Change in duty conditions
•Dry-running
•Worn bearings
•Increased vibration
It is important to periodically inspect and maintain flush systems, shaft alignment, and consistent duty
parameters to ensure the seal performs as designed. Often, there is a case of cause & effect with machinery
and processing issues upstream that can cause a seal to leak. Check for the root cause of leakage when
disassembling equipment for inspection or service.
DECOMMISSIONING EQUIPMENT
When decommissioning equipment it is important to ensure that the pump has been fully isolated from the
process and power sources for personnel safety. Pressure and fluid should be fully released before disassembly
of the equipment is to begin.
•If the equipment has been used with toxic or hazardous fluids, ensure that it is
decontaminated and neutralized before decommission begins. There is often residual fluid
remaining from the draining process so consult the pump OEM for special cases.
REMOVING THE SEAL
•Before opening the pump to remove the seal the warning stated above regarding toxins and
hazardous products must be reiterated. Make note of all fluids contained in the pump, drain
and decontaminate before opening the housing for seal service.
1. Ensure all fluid has been drained and vented. Equipment should be shut down and locked/tagged out
according to OEM and plant specifications.
2. Dismantle the equipment sufficiently so that the gland plate and seal housing are exposed and accessible
for service.
3. Remove the gland nuts/bolts in an even manner and set the gland plate aside.
4. Remove the seal in the reverse manner of how it was installed.
It is important to check the scribe reference each time a seal is re-installed even if the same
components are being re-installed.
If a part is going to be returned for service or to any third party, all shipments should have
appropriate safe-handling instructions securely attached to the package.
Page 7 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
DIMENSIONAL DATA
One Jackson Street, Essex Junction, VT 05453
Tel: [phone] | Fax: [phone]
Toll Free (USA Only): 800-426-3594
Distributed By:
Style 60 / 65 Style 62
Bellows size Shaft OD Seal OD Seal OL Seal OD Seal OL
A B C B C
-16 1.000 -- -- 1.457 1.625
-16X 1.000 1.562 1.687 -- --
-18 1.125 1.687 1.562 1.812 1.750
-20 1.250 -- -- 1.937 1.750
-20X 1.250 1.812 1.687 -- --
-22 1.375 1.937 1.750 2.062 1.750
-24 1.500 -- -- 2.187 1.750
-24X 1.500 2.170 1.750 -- --
-26 1.625 2.295 1.750 2.312 1.750
-28 1.750 2.420 1.750 2.437 1.750
-30 1.875 2.545 1.750 2.562 1.750
-32 2.000 2.670 1.750 2.687 1.750
-34 2.125 2.795 1.750 2.812 1.750
-36 2.250 2.920 1.875 2.937 1.750
-38 2.375 3.045 1.875 3.187 2.000
-40 2.500 3.187 1.875 3.312 2.000
-42 2.625 3.312 1.875 3.437 2.000
-44 2.750 3.437 1.875 3.625 2.000
-46 2.875 3.625 1.875 3.750 2.000
-48 3.000 3.750 1.875 3.875 2.000
-50 3.125 3.875 1.875 4.000 2.000
-52 3.250 4.000 1.875 4.125 2.000
-54 3.375 4.125 1.875 4.250 2.000
-56 3.500 4.250 1.875 4.375 2.000
-58 3.625 4.375 1.875 4.500 2.000
-60 3.750 4.500 1.875 4.625 2.000
-62 3.875 4.625 1.875 4.750 2.000
-64 4.000 4.750 1.875 5.125 2.000
-66 4.125 5.125 2.000 -- --
-68 4.250 5.125 2.000 -- --
-70 4.375 5.375 2.000 -- --
-72 4.500 5.375 2.000 -- --
-74 4.625 5.625 2.000 -- --
-76 4.750 5.625 2.000 -- --
Style 64
Bellows size Shaft OD Seal OD Seal OL
A B C D
-16x .875 1.625 .240 1.136
-18 1.000 1.750 .240 1.136
-20X 1.125 1.875 .240 1.136
-22 1.250 2.000 .240 1.136
-24X 1.375 2.125 .240 1.136
-26 1.500 2.375 .251 1.189
-28 1.625 2.375 .251 1.220
-30 1.750 2.500 .251 1.252
-32 1.875 2.625 .251 1.252
-34 2.000 2.750 .251 1.283
-36 2.125 3.000 .300 1.315
-38 2.250 3.125 .300 1.346
-40 2.375 3.250 .300 1.377
-42 2.500 3.375 .300 1.408
-44 2.625 3.500 .341 1.441
-46 2.750 3.750 .225 1.606
-48 2.875 3.875 .225 1.606
-50 3.000 4.000 .225 1.606
-52 3.215 4.125 .225 1.606
-54 3.250 4.250 .225 1.606
-56 3.375 4.375 .225 1.606
-58 3.500 4.500 .271 1.648
-60 3.625 4.625 .271 1.648
-62 3.750 4.750 .271 1.648
-64 3.875 4.875 .271 1.648
Style 60/62/64/65
Style 60 & 65 dimensional chart
Bellows
size
Shaft
OD
Seal
OD
Seal
OL
A
B
C
-
16X
1.000
1.562
1.687
-
18
1.125
1.687
1.562
-
20X
1.250
1.812
1.687
-
22
1.375
1.93
7
1.750
-
24X
1.500
2.170
1.750
-
26
1.625
2.295
1.750
-
28
1.7
50
2.420
1.750
-
30
1.875
2.545
1.750
-
32
2.000
2.670
1.750
-
34
2.125
2.795
1.750
-
36
2.250
2.920
1.875
-
38
2.375
3
.045
1.875
-
40
2.500
3.187
1.875
-
42
2.625
3.312
1.875
-
44
2.750
3.437
1.875
-
46
2.875
3.625
1.875
-
48
3.000
3.750
1.875
-
50
3.
125
3.
875
1.875
-
52
3.250
4.
000
1.875
-
54
3.375
4.125
1.875
-
56
3.500
4.250
1.875
-
58
3.625
4.375
1.875
-
60
3.750
4.500
1.875
-
62
3.875
4.625
1.875
-
64
4.000
4.750
1.875
-
66
4.125
5.125
2.000
-
68
4.250
5.125
2.000
-
70
4.375
5.375
2.000
-
72
4.500
5.375
2.000
-
74
4.625
5.625
2.000
-
76
4.750
5.625
2.000
All
dimensions in inches.
ALL DIMENSIONS IN INCHES
For additional dimensional information,
please request:
drawing SK1019 for Styles 60 & 65
drawing SK1001 for Style 62
ALL DIMENSIONS IN INCHES
For additional dimensional
information, please request
drawing SK1003 for Style 64
NOTE: Metric sizes also available.
Page 8 of 9

Installation, Operation, & Maintainance Guide
Style 60/62/65
www.flexaseal.com
Vermont
800.426.3594
Brazil
55.11.3736.737
Louisiana
225.484.0007
Texas
832.804.7424
Flexaseal Engineered Seals and Systems, LLC (hereinafter referred to as "FAS") warrants that new goods manufactured
by FAS (with the exception of "wear parts" or consumables all of which are not warranted) will be free from defects in
material and workmanship (the “Warranty”). The Warranty shall be in effect for a period of the earlier of three (3) months
from the date of installation or six (6) months from the date of shipment from FAS’s facility (which date of shipment shall
not be greater than thirty (30) days after receipt of notice that the goods are ready to ship) (the “Warranty Period”). FAS
shall, at its option and expense, either repair, replace, or refund amounts paid for any goods that fail to conform to the
Warranty. In no case shall FAS be obligated to remove the defective goods or install the replaced or repaired goods, and
the end user shall be responsible for providing ready access to the goods and areas for warranty work, and all other
associated costs, including, but not limited to, service costs, shipping fees, and expenses. FAS shall have complete
discretion as to the method or means of repair or replacement. The end user’s failure to comply with FAS’s repair or
replacement directions shall constitute a waiver of its rights and render all warranties void. Any goods repaired or
replaced under the Warranty are warranted only for the balance of the Warranty Period on the goods that were repaired
or replaced. The Warranty is conditioned on the end user giving written notice to FAS of any goods that fail to meet the
Warranty within ten (10) days of the date when any defects first become apparent. FAS shall have no warranty
obligations to the end user with respect to any goods or parts of a good that: (a) have been repaired by parties other than
FAS or without FAS’s written approval; (b) have been subject to misuse, misapplication, neglect, alteration, accident, or
physical damage; (c) have been used in a manner contrary to FAS’s instructions for installation, operation and
maintenance; (d) have been damaged from ordinary wear and tear, corrosion, or chemical attack; (e) have been
damaged due to abnormal conditions, vibration, failure to properly prime, or operation without flow; (f) have been
damaged due to a defective power supply or improper electrical protection; or (g) have been damaged resulting from the
use of accessory Products not sold by FAS or not approved by FAS in connection with goods supplied by FAS.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ANY AND ALL OTHER EXPRESS, ORAL, OR
IMPLIED WARRANTIES, GUARANTEES, CONDITIONS OR TERMS OF WHATEVER NATURE RELATING TO THE
GOODS PROVIDED HEREWITH, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHICH ARE HEREBY EXPRESSLY
DISCLAIMED AND EXCLUDED. END USER’S EXCLUSIVE REMEDY AND FAS’S AGGREGATE LIABILITY FOR
BREACH OF ANY OF THE FOREGOING WARRANTIES ARE LIMITED TO THE REPAIR, REPLACEMENT, RE-
PERFORMANCE, OR REFUND.
IN NO EVENT SHALL FAS’S LIABILITY ARISING OUT OF OR IN ANY WAY RELATED TO THE GOODS EXCEED
THE AMOUNT PAID BY END USER UNDER THIS AGREEMENT. FAS SHALL HAVE NO LIABILITY FOR LOSS OF
PROFIT, LOSS OF ANTICIPATED SAVINGS OR REVENUE, LOSS OF INCOME, LOSS OF BUSINESS, LOSS OF
PRODUCTION, LOSS OF OPPORTUNITY, LOSS OF USE, LOSS OF REPUTATION, BUSINESS INTERRUPTION,
DOWNTIME, INDIRECT, CONSEQUENTIAL, INCIDENTAL, PUNITIVE OR EXEMPLARY DAMAGES, HOWSOEVER
ARISING, WHETHER IN WARRANTY, CONTRACT, TORT, PRODUCT LIABILITY, STRICT LIABILITY, OR
OTHERWISE, REGARDLESS OF WHETHER FAS HAS BEEN APPRISED OF THE POSSIBILITY OF SUCH LOSSES
IN ADVANCE.
This warranty and limitation of liability shall be governed and construed in accordance with the laws of the State of
Delaware, USA. Sole and exclusive venue for any claim or controversy arising out of or in any way related to this
warranty and limitation of liability shall be in a state court located in Chittenden County, Vermont, USA.
FAS SW
V2.2020
LIMITED WARRANTY AND LIMITATION OF LIABILITY:
SEAL PRODUCTS
Page 9 of 9