John Crane SEALOL 670 Guide

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
1
Foreword
These instructions are provided to familiarize the user with the seal and
its designated use. These instructions must be read and applied whenever
work is done on the seal, and must be kept available for future reference.
ATTENTION These instructions are for the installation and operation
of a seal as used in rotating equipment and will help to
avoid danger and increase reliability. The information
required may change with other types of equipment or
installation arrangements. These instructions must be
read in conjunction with the instruction manuals for both
the pump and any ancillary equipment.
If the seal is to be used for an application other than that originally
intended or outside the recommended performance limits, John Crane
must be contacted before its installation and use.
Any warranty may be affected by improper handling, installation, or use
of this seal. Contact John Crane for information as to exclusive product
warranty and limitations of liability.
If questions or problems arise, contact your local John Crane or the
original equipment manufacturer, as appropriate.
ATTENTION John Crane mechanical seals are precision products and
must be handled appropriately. Take particular care to
avoid damage to lapped sealing faces and to flexible
sealing rings. Do not excessively compress the seal
before or during installation.
Safety Instructions
1. The following designations are used in the installation instructions to
highlight instructions of particular importance.
NOTE Refers to special information on how to install or operate
the seal most efficiently.
ATTENTION Refers to special information or instructions
directed towards the prevention of damage
to the seal or its surroundings.
Refers to mandatory instructions designed to
prevent personal injury or extensive damage
to the seal or its surroundings.
2. Installation, removal and maintenance of the seal must be carried
out only by qualified personnel who have read and understood these
installation instructions.
3. The seal is designed exclusively for sealing rotating shafts. The
manufacturer cannot be held liable for use of the seal for purposes
other than this.
4. The seal must only be used in technically perfect condition, and must
be operated within the recommended performance limits in accordance
with its designated use set out in these installation instructions.
5. If the pumped fluid is hazardous or toxic, appropriate precautions must
be taken to ensure that any seal leakage is adequately contained.
Further information on sealing hazardous or toxic fluids should be
obtained from John Crane prior to seal installation.
6. Fluorocarbon components should never be burned or incinerated as the
fumes and residues are highly toxic. If fluorocarbons are accidentally
heated above 400°C/750°F, they can decompose. Therefore, protective
gloves should be worn as hydrofluoric acid may be present.
7. PTFE components should never be burned or incinerated as the fumes
are highly toxic.
Before Starting the Equipment
1. Check the pump at the coupling for proper alignment of the driver
or motor.
2. Ensure that the gland plate nuts/bolts are securely tightened according
to the pump manual instructions and all screws are securely fastened.
3. Complete the assembly of the pump, and turn the shaft (by hand if
possible) to ensure free rotation.
4. Consult all available equipment operating instructions to check for
correctness of all piping and connections, particularly regarding
seal recirculation/flush, heating or cooling requirement and services
external to the seal.
Sealol®is a registered trademark of John Crane Inc.
ECS is a trademark of John Crane Inc.

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
2
ATTENTION This mechanical seal is designed to operate in a liquid
so the heat energy it creates is adequately removed.
Therefore, the following check should be carried out not
only after seal installation, but also after any period of
equipment inactivity.
5. Check that the seal chamber fluid lines are open and free of any
obstruction, and ensure that the seal chamber is properly vented
and filled with liquid. Refer to the pump instruction manual.
ATTENTION Dry-running, often indicated by a squealing noise from
the seal area, will cause overheating and scoring or other
damage to the sealing surfaces, resulting in excessive
leakage or a much shortened seal life.
Before startup, ensure that all personnel and
assembly equipment have been moved to a safe
distance so there is no contact with rotating parts
on the pump, seal, coupling or motor.
WARNING Seal installation should be handled only by
qualified personnel. If questions arise, contact
the local John Crane representative. Improper use
and/or installation of this product could result
in injury to the person and/or harmful emissions
to the environment, and may affect any warranty
on the product. Please contact the company for
information as to exclusive product warranty and
limitations of liability.
General Instructions
1. Study the engineering layout drawing to confirm the proper seal
arrangement for the pump being used.
2. To assure satisfactory operation, handle seal with care. Take particular
caution to see that the lapped sealing faces are not scratched or
damaged.
Part Name
1– Mating ring
2– O-ring
3– Rotary seal assembly
4– O-ring or gasket
5– Set screws
6– Gland plate assembly
7 – Bushing
8 – Retaining ring
9 – Spacer ring
10– Wave spring
11– Compression ring
12– Bellows assembly
13 – Insert
14 – ECS housing
15 – Metal damper
16 – Spacer
Typical Type 670/675/676 Seal Arrangement
4
6
8
7
2
1
3
25
Typical Type 680 Seal Arrangement
4
6
8
7
2
1
3
25
Typical Type 670/ECS Seal Arrangement
1
2
9
8
14
16
15
12
1311 2
10
Preparing the Equipment
1. Check seal chamber dimensions and finishes.
2. Measure axial end play (0.13 mm/0.005" FIM max.).
Typical Type MLS-1 Seal Arrangement
4
5
1
10
26 7 8 9 11 312
General Instructions
1. Study the engineering layout drawing to confirm that the seal gasket
and gland will mate successfully with the stuffing box. There are differ-
ent seal configurations depending on the design of the stuffing box.
Preparing the Equipment
1. Check the stuffing box dimensions and finishes.
2. Measure axial end play (±2.54mm/0.100" max.).
3. Measure shaft runout (±0.127mm/0.005" max.).
4. Measure squareness of the stuffing box to the shaft
(±0.051mm/0.002" max.).
NOTE: If measured dimensions
exceed those values
given, correct the
equipment to meet
specifications prior to
seal installation.
63
SHAFT OR SLEEVE
0.040 LG. X 20˚ CHAM.
BORE
0D +0.000"
-0.002"
63
0.040"
10˚
MOVE SHAFT IN AXIAL DIRECTION
BY HAND. NOTE MEASUREMENT
ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SEAL CHAMBER
FACE
The MLS-1 seal is shipped fully assembled. When ordering a repair kit,
assemble the MLS-1 as follows, referring to the applicable engineering
layout drawing. This assembly is based on installing the repair kit into an
existing seal assembly.
NOTE: These instructions apply to the MLS-1, which is the standard MLS,
and should only be used when installing the components of the
repair kit. Other MLS seal types require different assembly
procedures. Contact John Crane Engineering.
Elastomeric o-rings can be damaged or destroyed if care is not
taken. Prior to assembly of o-rings into their respective grooves,
make sure groove is clean and free of foreign materials. Lubricate
both groove and o-ring prior to installation.
Removing Old Parts
1. Remove sleeve from gland. Save for assembly.
2. Place the gland on table with gasket side facing down.
3. Remove the retaining ring by applying a small flathead screwdriver
to the split in the ring.
4. Remove all interior components, saving the compression ring for
assembly. Remove O-ring from sleeve.
Do not reuse O-rings.
Assembling Repair Kit
1. With gasket side facing down, install a gland O-ring into the gland.
2. Insert the first sealing element into the gland with the end of the arc
facing down.
3. Install a gland O-ring onto the o-ring spacer in the OD groove.
Insert the O-ring spacer into the gland with O-ring side facing up.
4. Insert the second sealing element into the gland with the end of
the arc facing down. Insert the spacer into the gland with small
ID facing down.
5. Insert the third sealing element into the gland with the end of the arc
facing down. Install a gland O-ring onto the compression ring in the
OD groove.
6. Insert the compression ring into the gland with O-ring side
facing down.
(continued on page 3)
Type MLS-1 Seal Assembly (Repair Kit)
Part Name
1 Gland 7 Chemlon Seal
2 Sleeve 8 O-ring Spacer
3 Set Screws 9 Flush Spacer
4 Gasket 10 Retaining Ring
5 Gland O-ring 11 Setting Spacer
6 Sleeve O-ring 12 Compression Ring
!
TYPE MLS-1
CHEMLON CARTRIDGE SEAL
Installation, Operation & Maintenance Instructions
PAGE 2

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
3
3. Determine squareness of seal chamber face to shaft
(0.001 mm per mm/ 0.001" per inch of shaft diameter FIM max.),
and shaft concentricity to the seal chamber.
Typical Type MLS-1 Seal Arrangement
4
5
1
10
26 7 8 9 11 312
General Instructions
1. Study the engineering layout drawing to confirm that the seal gasket
and gland will mate successfully with the stuffing box. There are differ-
ent seal configurations depending on the design of the stuffing box.
Preparing the Equipment
1. Check the stuffing box dimensions and finishes.
2. Measure axial end play (±2.54mm/0.100" max.).
3. Measure shaft runout (±0.127mm/0.005" max.).
4. Measure squareness of the stuffing box to the shaft
(±0.051mm/0.002" max.).
NOTE: If measured dimensions
exceed those values
given, correct the
equipment to meet
specifications prior to
seal installation.
63
SHAFT OR SLEEVE
0.040 LG. X 20˚ CHAM.
BORE
0D +0.000"
-0.002"
63
0.040"
10˚
MOVE SHAFT IN AXIAL DIRECTION
BY HAND. NOTE MEASUREMENT
ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SEAL CHAMBER
FACE
The MLS-1 seal is shipped fully assembled. When ordering a repair kit,
assemble the MLS-1 as follows, referring to the applicable engineering
layout drawing. This assembly is based on installing the repair kit into an
existing seal assembly.
NOTE: These instructions apply to the MLS-1, which is the standard MLS,
and should only be used when installing the components of the
repair kit. Other MLS seal types require different assembly
procedures. Contact John Crane Engineering.
Elastomeric o-rings can be damaged or destroyed if care is not
taken. Prior to assembly of o-rings into their respective grooves,
make sure groove is clean and free of foreign materials. Lubricate
both groove and o-ring prior to installation.
Removing Old Parts
1. Remove sleeve from gland. Save for assembly.
2. Place the gland on table with gasket side facing down.
3. Remove the retaining ring by applying a small flathead screwdriver
to the split in the ring.
4. Remove all interior components, saving the compression ring for
assembly. Remove O-ring from sleeve.
Do not reuse O-rings.
Assembling Repair Kit
1. With gasket side facing down, install a gland O-ring into the gland.
2. Insert the first sealing element into the gland with the end of the arc
facing down.
3. Install a gland O-ring onto the o-ring spacer in the OD groove.
Insert the O-ring spacer into the gland with O-ring side facing up.
4. Insert the second sealing element into the gland with the end of
the arc facing down. Insert the spacer into the gland with small
ID facing down.
5. Insert the third sealing element into the gland with the end of the arc
facing down. Install a gland O-ring onto the compression ring in the
OD groove.
6. Insert the compression ring into the gland with O-ring side
facing down.
(continued on page 3)
Type MLS-1 Seal Assembly (Repair Kit)
Part Name
1 Gland 7 Chemlon Seal
2 Sleeve 8 O-ring Spacer
3 Set Screws 9 Flush Spacer
4 Gasket 10 Retaining Ring
5 Gland O-ring 11 Setting Spacer
6 Sleeve O-ring 12 Compression Ring
!
TYPE MLS-1
CHEMLON CARTRIDGE SEAL
Installation, Operation & Maintenance Instructions
PAGE 2
4. Measure shaft runout (0.001mm/0.001" per inch per mm of shaft
diameter FIM max.).
Typical Type MLS-1 Seal Arrangement
4
5
1
10
26 7 8 9 11 312
General Instructions
1. Study the engineering layout drawing to confirm that the seal gasket
and gland will mate successfully with the stuffing box. There are differ-
ent seal configurations depending on the design of the stuffing box.
Preparing the Equipment
1. Check the stuffing box dimensions and finishes.
2. Measure axial end play (±2.54mm/0.100" max.).
3. Measure shaft runout (±0.127mm/0.005" max.).
4. Measure squareness of the stuffing box to the shaft
(±0.051mm/0.002" max.).
NOTE: If measured dimensions
exceed those values
given, correct the
equipment to meet
specifications prior to
seal installation.
63
SHAFT OR SLEEVE
0.040 LG. X 20˚ CHAM.
BORE
0D +0.000"
-0.002"
63
0.040"
10˚
MOVE SHAFT IN AXIAL DIRECTION
BY HAND. NOTE MEASUREMENT
ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SHAFT
TURN SHAFT BY HAND AND NOTE
MEASUREMENT ON DIAL INDICATOR
MOUNT
DIAL INDICATOR
ON SEAL CHAMBER
FACE
The MLS-1 seal is shipped fully assembled. When ordering a repair kit,
assemble the MLS-1 as follows, referring to the applicable engineering
layout drawing. This assembly is based on installing the repair kit into an
existing seal assembly.
NOTE: These instructions apply to the MLS-1, which is the standard MLS,
and should only be used when installing the components of the
repair kit. Other MLS seal types require different assembly
procedures. Contact John Crane Engineering.
Elastomeric o-rings can be damaged or destroyed if care is not
taken. Prior to assembly of o-rings into their respective grooves,
make sure groove is clean and free of foreign materials. Lubricate
both groove and o-ring prior to installation.
Removing Old Parts
1. Remove sleeve from gland. Save for assembly.
2. Place the gland on table with gasket side facing down.
3. Remove the retaining ring by applying a small flathead screwdriver
to the split in the ring.
4. Remove all interior components, saving the compression ring for
assembly. Remove O-ring from sleeve.
Do not reuse O-rings.
Assembling Repair Kit
1. With gasket side facing down, install a gland O-ring into the gland.
2. Insert the first sealing element into the gland with the end of the arc
facing down.
3. Install a gland O-ring onto the o-ring spacer in the OD groove.
Insert the O-ring spacer into the gland with O-ring side facing up.
4. Insert the second sealing element into the gland with the end of
the arc facing down. Insert the spacer into the gland with small
ID facing down.
5. Insert the third sealing element into the gland with the end of the arc
facing down. Install a gland O-ring onto the compression ring in the
OD groove.
6. Insert the compression ring into the gland with O-ring side
facing down.
(continued on page 3)
Type MLS-1 Seal Assembly (Repair Kit)
Part Name
1 Gland 7 Chemlon Seal
2 Sleeve 8 O-ring Spacer
3 Set Screws 9 Flush Spacer
4 Gasket 10 Retaining Ring
5 Gland O-ring 11 Setting Spacer
6 Sleeve O-ring 12 Compression Ring
!
TYPE MLS-1
CHEMLON CARTRIDGE SEAL
Installation, Operation & Maintenance Instructions
PAGE 2
Component Seals
Setting the seal
1. With the seal chamber and shaft/sleeve in their correct operating
positions, use a straight edge to scribe the position of the seal
chamber face onto the shaft/sleeve at A. Use machinist’s blue to make
the scribe easier to see.
2. Again remove the pump housing. From the installation drawing,
determine the distance from the seal chamber face to the seal set
length, and scribe line B onto the shaft sleeve at this distance.
3. Without disturbing the scribe line B, wipe the shaft/sleeve clean and
apply a lubricant which is compatible with the sealed fluid and the
gasketing materials.
Type 670/675/676/680 Dimensional Data (mm)
Sealol
Dash
No.
Shaft
Size
A B C D E F
Set Screw
Size/Qty
670/680 670 680
-024 24.00 38.10 29.79 34.93 4.50 30.00 M5 x 3 M5 x 3
-025 25.00 39.00 30.50 35.68 4.50 30.00 M5 x 3 M5 x 3
-028 28.00 42.00 33.50 38.68 5.50 32.50 M5 x 3 M5 x 3
-030 30.00 44.00 35.50 40.68 5.10 32.50 M5 x 3 M5 x 3
-032 32.00 46.02 38.51 43.66 5.10 32.50 M5 x 3 M5 x 3
-033 33.00 47.00 38.20 44.63 4.50 32.50 M5 x 3 M5 x 3
-035 35.00 49.20 41.68 46.86 4.50 32.50 M5 x 3 M5 x 3
-038 38.00 52.37 43.59 50.04 5.20 34.00 M6 x 3 M6 x 3
-040 40.00 55.55 46.76 53.21 5.20 34.00 M6 x 3 M6 x 3
-043 43.00 58.72 49.94 56.39 5.20 34.00 M6 x 3 M6 x 3
-045 45.00 58.72 49.94 56.39 5.20 34.00 M6 x 3 M6 x 3
-048 48.00 61.90 53.09 59.56 5.00 34.00 M6 x 3 M6 x 3
-050 50.00 65.07 56.29 62.76 5.20 34.50 M6 x 3 M6 x 3
-053 53.00 68.25 59.44 65.91 5.20 34.50 M6 x 3 M6 x 3
-055 55.00 71.00 62.00 68.45 4.60 34.50 M6 x 3 M6 x 3
-058 58.00 74.60 65.79 72.29 6.60 39.50 M6 x 3 M8 x 3
-060 60.00 74.60 65.79 72.29 6.60 39.50 M6 x 3 M8 x 3
-063 63.00 80.95 70.87 78.64 6.60 39.50 M6 x 3 M8 x 3
-065 65.00 84.12 74.04 81.81 6.00 39.50 M6 x 3 M8 x 3
-068* 68.00 87.30 77.22 85.01 5.10 37.50 — M8 x 3
-070 70.00 87.30 77.22 85.01 8.20 45.00 M6 x 3 M8 x 3
-075 75.00 95.25 84.38 92.13 7.80 45.00 M6 x 3 M8 x 3
-080 80.00 98.43 87.30 95.81 6.70 44.50 M8 x 4 M8 x 3
-085 85.00 104.78 93.65 102.16 6.70 44.50 M8 x 4 M8 x 3
-090 90.00 107.95 96.82 105.33 9.00 49.50 M8 x 4 M8 x 3
-095 95.00 114.30 103.17 111.68 9.00 49.50 M8 x 4 M8 x 3
-100 100.00 120.65 109.52 118.03 9.00 49.50 M8 x 4 M8 x 3
-102 102.00 120.65 109.52 118.03 9.00 49.50 M8 x 4 —
-105 105.00 131.75 115.49 124.76 7.10 48.50 M8 x 4 —
-110 110.00 138.13 126.44 131.14 7.10 48.50 M8 x 4 —
-115 115.00 144.48 128.22 137.49 7.10 48.50 M8 x 4 —
-120 120.00 144.48 128.22 137.49 7.10 48.50 M8 x 4 —
-125 125.00 150.83 134.59 143.87 7.10 48.50 M8 x 4 —
-130 130.00 157.81 140.56 150.85 7.10 48.50 M8 x 4 —
-140 140.00 170.54 153.31 163.60 7.10 48.50 M8 x 4 —
-150 150.00 176.89 159.66 169.98 7.10 48.50 M8 x 4 —
NOTE: If measured
dimensions exceed those
values given, correct
the equipment to meet
specifications prior to
seal installation.
* 670 is not available in 68mm size.

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
4
Type 670/675/676/680 Dimensional Data (inches)
Sealol
Dash
No.
Shaft
Size
A B C D E F
Set Screw
Size/Qty
670/680
-16 1.000 1.562 1.235 1.439 0.170 1.250 #10-24 x 3
-18 1.125 1.687 1.362 1.566 0.170 1.250 #10-24 x 3
-20 1.250 1.812 1.516 1.720 0.170 1.312 #10-24 x 3
-22 1.375 1.937 1.641 1.846 0.200 1.437 1/4-20 x 3
-24 1.500 2.062 1.716 1.971 0.200 1.437 1/4-20 x 3
-26 1.625 2.187 1.841 2.096 0.200 1.437 1/4-20 x 3
-28 1.750 2.312 1.966 2.221 0.200 1.437 1/4-20 x 3
-30 1.875 2.437 2.090 2.346 0.220 1.500 1/4-20 x 3
-32 2.000 2.562 2.216 2.472 0.220 1.500 1/4-20 x 3
-34 2.125 2.687 2.340 2.597 0.220 1.500 1/4-20 x 3
-36 2.250 2.812 2.466 2.723 0.220 1.562 1/4-20 x 3
-38 2.375 2.937 2.590 2.848 0.220 1.562 1/4-20 x 3
-40 2.500 3.187 2.790 3.098 0.220 1.562 1/4-20 x 3
-42 2.625 3.312 2.915 3.223 0.220 1.625 1/4-20 x 3
-44 2.750 3.437 3.040 3.349 0.220 1.625 1/4-20 x 3
-46 2.875 3.625 3.196 3.504 0.220 1.687 1/4-20 x 3
-48 3.000 3.750 3.322 3.629 0.220 1.687 1/4-20 x 3
-50 3.125 3.875 3.437 3.774 0.220 1.750 1/4-20 x 3
-52 3.250 4.000 3.562 3.899 0.220 1.750 1/4-20 x 3
-54 3.375 4.125 3.687 4.024 0.220 1.750 1/4-20 x 3
-56 3.500 4.250 3.812 4.149 0.220 1.875 1/4-20 x 3
-58 3.625 4.375 3.937 4.274 0.220 1.875 1/4-20 x 3
-60 3.750 4.500 4.062 4.399 0.220 1.875 1/4-20 x 3
-62 3.875 4.625 4.187 4.524 0.220 1.875 1/4-20 x 3
-64 4.000 4.750 4.312 4.649 0.220 1.875 1/4-20 x 3
-68 4.250 5.187 4.523 4.915 0.280 1.903 5/16-18 x 4
-72 4.500 5.438 4.774 5.166 0.280 1.903 5/16-18 x 4
-76 4.750 5.688 5.024 5.416 0.280 1.903 5/16-18 x 4
-80 5.000 5.938 5.274 5.666 0.280 1.903 5/16-18 x 4
-84 5.250 6.213 5.509 5.941 0.280 1.903 5/16-18 x 4
-88 5.500 6.463 5.759 6.191 0.280 1.903 5/16-18 x 4
-92 5.750 6.714 6.010 6.442 0.280 1.903 5/16-18 x 4
-96 6.000 6.964 6.260 6.692 0.280 1.903 5/16-18 x 4
-104 6.500 7.470 6.759 7.193 0.280 1.903 5/16-18 x 4
-108 6.750 7.721 7.026 7.444 0.280 1.903 5/16-18 x 4
-112 7.000 7.971 7.259 7.694 0.280 1.903 5/16-18 x 4
Typical Type 670/675/676
F
E
D
C
B
A
Typical Type 680
A
B
C
D
F
E
Installing the seal
1. Unwrap the mechanical seal components, taking care not to
scratch or damage the seal faces. (If a block style stationery seat
is supplied, first install the stationery O-ring into its groove in the
gland counterbore.) Lightly lubricate the stationery O-ring and press
the assembly into the gland plate counterbore, ensuring that the slot
engages the drive pin in the gland, if applicable. Carefully slide the
complete gland assembly, including the gland gasket, onto the shaft
as far away as possible from the seal chamber.
2. Lightly lubricate the O-ring and slide the rotating assembly onto the
shaft/sleeve, being careful not to damage the O-ring. Referring to the
assembly drawing, the back of the rotary seal assembly with scribe
line B, and tighten the set screws evenly. (Once tightened, set screws
should not be re-used. If you must loosen the set screws for any
reason, replace them before repeating step 2.)
B
Type 680 available in sizes to -100 (metric) and -64 (inch).
Type 675 available in -18, -22, -28, -30 (inch).

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
5
3. Being careful not to damage the seal, reassemble the seal chamber
housing and install the impeller. Ensure the gland gasket is in place.
Slide the gland assembly into position against the face of the seal
chamber. Assemble the gland bolts finger tight. Continue tightening
alternately until secure. Do not distort the gland by overtightening.
Verify the gland is concentric with the shaft sleeve to prevent possible
damage due to rubbing.
4. Complete reassembly of the pump, frequently turning the shaft by
hand to check for free rotation. If the shaft will not turn, seal has been
improperly set.
ATTENTION Refer to assembly drawing and/or pump manual for
piping connections and coupling alignment. Proceed as
indicated.
Cartridge Seals and ECS™
Installing the seal in an overhung pump
1. Disassemble the seal chamber housing. Wipe the shaft/sleeve clean
and apply a lubricant which is compatible with the sealed fluid and
the gasketing material. Take the complete cartridge assembly from its
package. Do not disassemble or alter the unit.
2. Slide the complete cartridge assembly as far as possible onto the
shaft/sleeve, towards the bearings. Be careful not to damage the
O-ring inside the cartridge sleeve.
3. Reassemble the seal chamber housing and the impeller. Complete all
required axial adjustments to the pump rotating assembly.
4. With the gland gasket in place, slide the complete assembly into
position against the face of the seal chamber. Assemble the gland
bolts finger tight. Continue tightening alternately until secure. Do not
distort the gland by overtightening.
5. Leave the eccentric washers or shipping clips in place to maintain the
setting position of the cartridge seal.
6. If the assembly drawing calls for holes or countersinks to be drilled
under the cartridge sleeve set screws, remove the set screws and
mark their location. Unbolt the cartridge gland and remove the
impeller, the seal chamber housing and the cartridge assembly. Drill
the shaft/sleeve in the positions marked. Repeat steps 1–4.
7. Tighten the cartridge sleeve set screws evenly. (If the shaft/sleeve
has been drilled, ensure that the set screws align with the appropriate
drilled holes).
8. Remove the shipping clips, or rotate the eccentric washers 180° to
clear the slot in the cartridge sleeve.
9. Complete reassembly of the pump, frequently turning the shaft by
hand to check for free rotation. If the shaft will not turn, the seal has
been improperly set.
ATTENTION Refer to assembly drawing and/or pump manual for
piping connections and coupling alignment. Proceed
as indicated.
Installing the seal between bearings
1. Disassemble the bearings and bearing housings. Wipe the shaft/sleeve
clean and apply a lubricant which is compatible with the sealed fluid
and the gasketing materials. Take both complete cartridges from their
packages. Do not disassemble or alter the units.
2. Slide the complete cartridge assemblies onto the shaft/sleeves, being
careful not to damage the O-rings inside the cartridge sleeves.
3. Reassemble the bearing housings and bearings, and complete all
required axial adjustments to the pump rotating assembly.
4. With the gland gasket in place, slide the complete assembly into
position against the face of the seal chamber. Assemble the gland
bolts finger tight. Continue tightening alternately until secure. Do not
distort the gland by overtightening.
5. Leave the eccentric washers or shipping clips in place to maintain the
setting position of the cartridge seal.
6. If the assembly drawing calls for holes or countersinks to be drilled
under the cartridge sleeve set screws, remove the set screws and
mark their location. Unbolt the cartridge gland, remove the bearings,
bearing housings, and cartridge assemblies. Drill the shaft/sleeves in
the positions marked. Repeat steps 1-4.
7. Tighten the cartridge sleeve set screws evenly. (If the shaft/sleeve
has been drilled, ensure that the set screws align with the appropriate
drilled holes).
8. Remove the shipping clips, or rotate the eccentric washers 180° to
clear the slot in the cartridge sleeve.
9. Complete reassembly of the pump, frequently turning the shaft by
hand to check for free rotation. If the shaft will not turn, the seal has
been improperly set.
ATTENTION Refer to assembly drawing and/or pump manual for
piping connections and coupling alignment. Proceed
as indicated.

TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
Installation, Operation & Maintenance Instructions
6
Decommissioning the Equipment
1. Ensure that the equipment is electrically isolated.
If the equipment has been used on toxic or hazardous
fluids, ensure that the equipment is correctly
decontaminated and made safe prior to commencing
work. Fluid is often trapped during draining and may
exist outside the seal. The equipment instruction manual
should be consulted for any special precautions.
2. Ensure that the equipment is isolated by the appropriate valves.
Check that the fluid is drained and pressure is fully released.
Maintenance
No maintenance of a seal is possible while installed. Therefore, it is
recommended that a spare seal unit and mating ring be held in stock to
allow immediate replacement of a removed seal.
It is recommended that used seals be returned to a John Crane service
location. Rebuilding to as-new specifications must be carried out by
qualified personnel.
It is the responsibility of the equipment user to ensure
that any used parts sent to John Crane or a third party
have appropriate safe handling instructions externally
attached to the package.
Quality Assurance
This seal has been assembled in accordance with John Crane quality
assurance standards and with proper maintenance and use will give safe
and reliable operation to the maximum recommended performance as
shown in any relevant approved John Crane publication.
Ordering Information
1. Cartridge seal size = solid shaft or sleeve OD.
2. Select single 670/675/676/680 arrangement.
3. Determine whether standard or enlarged seal chamber configuration
is required.
4. For other material combinations or size considerations, consult the
local John Crane representative.
Materials of Construction
SEAL COMPONENTS MATERIALS
Description Standard ECS™
Bellows 670: Alloy C-276 (UNS N10276)
675: Titanium (UNS R52400)
676: AM350 (UNS S35500)
680: Alloy 20 (UNS N08022)
Inconel®718, Alloy C-276 (UNS N10276), Monel®, AM350
Adaptive hardware 670: Alloy C-276 (UNS N10276)
675: Titanium (UNS R50400)
676: 316L Stainless Steel (UNS S31603)
680: Alloy 20 (UNS N08022)
300 Series stainless steel
Faces Carbon graphite, tungsten carbide, silicon carbide Carbon graphite vs. silicon carbide
Static seals PTFE-encapsulated fluorocarbon, EPR, nitrile, fluorocarbon,
perfluoroelastomer
Fluorocarbon
Inconel®and Monel®are registered trademark of Inco Alloys, International Inc.
Operating (non-concurrent) Limits
Description Standard ECS™
Temperature -75° to 200°C/-100° to 400°F Up to 204°C/400°F
Pressure 20 bar/300 psi (internal mounting)
5 bar/75 psi (external mounting)
Up to 20 barg/300 psig (dynamic)
Up to 31 barg/450 psig (containment)
Up to 1 barg/15 psig (cavity)
Speed Up to 25 m/s / 4,500 sfpm Up to 50 m/s / 10,000 sfpm

7
Installation, Operation & Maintenance Instructions
TYPE 670/675/676/680/ECS™
SEALOL®METAL BELLOWS EMISSION CONTAINMENT SEAL
If the products featured will be used in a potentially dangerous and/or hazardous process, your John Crane representative should be consulted prior to
their selection and use. In the interest of continuous development, John Crane Companies reserve the right to alter designs and specifications without
prior notice. It is dangerous to smoke while handling products made from PTFE. Old and new PTFE products must not be incinerated. ISO 9001 and
ISO14001 Certified, details available on request.
©2022 John Crane 3/22 johncrane.com IOM-TYPE 670/675/676/680/ECS-Eng
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