Flowserve Durametallic SL-5000 User manual

Installation
Instructions
Durametallic® SL-5000
and SL-5200 Seals
Experience In Motion
Cartridge Slurry Seals
1 Equipment Check
1.1 Follow plant safety regulations prior to equipment disassembly:
1.1.1 Wear designated personal safety equipment
1.1.2 Isolate equipment and relieve any pressure in the system
1.1.3 Lock out equipment driver and valves
1.1.4 Consult plant Safety Data Sheet (SDS) files for hazardous material regulations
1.2 Disassemble equipment in accordance with the equipment manufacturer’s instructions
to allow access to seal installation area.
1.3 Remove existing sealing arrangement (mechanical seal or otherwise).
Clean seal chamber and shaft thoroughly.
1.4 Inspect surfaces under gaskets to ensure they are free from pits or scratches. Break all sharp
corners on shaft steps, threads, reliefs, shoulders, key ways, etc. over which gasket(s) must
pass and/or seal against.
1.5 Check shaft or sleeve OD, seal chamber bore, seal chamber depth, gland pilot, stud diameter,
stud bolt pattern and distance to first obstruction to ensure they are dimensionally the same
as shown in the seal assembly drawing.
1.6 Check seal assembly drawings for any modifications (reworks) to be made to the equipment
for mechanical seal installation and act accordingly.
1.7 The equipment must be earthed to prevent sparks due to static electricity discharge.

2
Shaft runout should be checked against the equipment manufacturer‘s specifications.
Generally, should not exceed 0.05 mm (0.002 inch) TIR (Total Indicator Reading)
at any point along the shaft for ball or roller type bearings.
For sleeve type bearings, refer to manufacturer instructions.
If the equipment is not completely dismantled, verify runout
near seal location.
The above values apply to shaft speeds in the range from
1000 to 3600 RPM. For values above and below, consult your
Flowserve representative. See Figure 1.
Shaft endplay should not exceed 0.25 mm (0.010 inch) TIR,
regardless of thrust bearing type. See Figure 2.
Radial bearing play at seal chamber face should be checked
against the equipment manufacturer’s specifications. Generally
0.05 - 0.10 mm (0.002 - 0.004 inch) will be applicable for ball o r
roller type bearings. For sleeve or journal type bearings, values
will generally be in the order of 0.10 - 0.15 mm (0.004 - 0.006 inch).
If equipment is found outside the general range, contact the
equipment manufacturer and your Flowserve representative
to verify the equipment’s suitability for the seal.
Seal chamber squareness to the shaft centerline should
be within 0.0005 mm/mm (0.0005 inch/inch) of seal
chamber bore TIR.
Note: make sure that shaft endplay does not affect
the reading. Verify the smoothness of the seal
chamber face for a good gasket joint. See Figure 3.
Concentricity of the shaft to the seal chamber bore or gland
pilot register should be within 0.025 mm per 25 mm shaft
diameter (0.001 inch per 1 inch shaft diameter)
to a maximum of 0.125 mm (0.005 inch) TIR.
See Figure 4.
Figure 4
Figure 3
Figure 1
Figure 2
To first obstruction
Shaft or sleeve OD
+0.000 mm (+0.000 inch)
-0.050 mm (-0.002 inch)
+0.000 mm (+0.000 inch) API 610/682
-0.025 mm (-0.001 inch) DIN/ISO
ASME
Seal housing face to have surface finish
of 1.6 μm (63 μinch) Rafinish or better.
Gland pilot can be at either
of these register locations.
Seal housing bore to have 3.2 μm
(125 μinch) Rafinish or better.
Sleeve or shaft finish to be
0.8 μm (32 μinch) Raor better.
Surface finish requirements
Figure 5

3
2 Installation
2.1 Lubricate the shaft lightly with silicone lubricant before installing the seal assembly on the
shaft.
2.2 Install the complete cartridge seal assembly over the shaft and ease it into position. Care
should be exercised when passing the sleeve incorporating the O-ring over any keyways or
threads that may be present. Any steps or shoulders on the shaft should be beveled to prevent
damage (pinching and cutting) of the O-ring sleeve gasket during installation. Attach the gland
bolts loosely, hand tight, to the face of the seal chamber.
2.3 After the pump assembly has been completed with the impeller, shaft, coupling, and bearing in
their respective running or operating position, tighten the gland bolts to the seal chamber,
evenly cross staggering the adjustment of the bolts.
2.4 Be sure the set screw material is harder than the shaft material to bite into the shaft and hold
the required load. Tighten the sleeve collar set screws to the shaft by cross staggering the
adjustment.
2.5 Remove the setting devices from between the sleeve drive collar and gland, and store for future
use.
2.6 The seal is set and ready for operation.
Operational Recommendations
3 SL-5000
3.1 Do not start the equipment dry. Never start up the equipment without properly venting the
pump of air.
3.2 If the seal runs hot, check for proper seal setting, seal housing dimensions, and check the flush
lines for obstructions. Do not allow the equipment to run for any extended time if the seal gets
hot or squeals.
SL-5000 and SL-5200 Cartridge Seals are complete preset seal assemblies which include the sleeve
and gland. No seal settings or measurements are required. They are especially suitable for pumps
and rotating equipment handling abrasive slurries. The SL-5000 is a single seal design and the
SL-5200 is a dual seal.
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.

4
4 SL-5200
Figure 6 contains guidelines for buffer fluid systems which can be used with the SL-5200 double seal.
Figure 3 is a suggested piping arrangement for the SL-5200 with circulating feature and supply tank
with cooling coil. For other sealing liquid systems using Dura Circulators, external flushing or thermal
convection, refer to the assembly drawing or consult Flowserve, Flow Solutions for instructions.
4.1 Always start up the sealing liquid supply before starting equipment. Be sure that the sealing
liquid pressure is greater than the maximum pressure of the process fluid acting on the
seal chamber.
4.2 Seal liquid pressure must not exceed the pressure velocity rating of the seal design and
materials of construction.
4.3 Be sure cooling water to supply tank or circulator is on.
4.4 Never start up equipment dry. Properly vent all air.
4.5 If the seal runs hot or squeals, check the seal liquid flow between the seals and check the seal
housing dimensions to insure that the seal is not over-compressed.
For special problems encountered during installation, contact your nearest Flowserve Sales and
Service Representative or Authorized Distributor.

5
SL-5200 Buffer Fluid System Recommendations Figure 6
RPM
1800
1500
1200
900
32 to 50 mm
(1.25 to
2.000 inch)
53 to 76 mm
(2.125 to
3.000 inch)
80 to 102 mm
(3.125 to
4.000 inch)
105 to 127 mm
(4.125 to
5.000 inch)
130 to 152 mm
(5.125 to
6.000 inch)
External Flush or
Consult Flowserve
Thermal Convection
System with Plain
Supply Tank
Consult
Flowserve
Consult
Flowserve
Circulating Feature and Supply
Tank with Cooling Coil
Shaft or Seal Size
Notes
1. Recommendations are for use with a water buffer fluid only.
2. These recommendations apply to products having a maximum
temperature of 71°C (160°F).
3. Systems can be applied at the seals maximum pressure limit
according to PV curve 2D-255497.
4. In most cases other systems can be successfully applied.
Consult Flowserve for other options.

6
SL-5200 with Circulation Through a Supply Tank with Cooling Coil Figure 7
pressure source,
normally open
liquid fill,
normally closed
level
transmitter
pressure
transmitter
orifice
1.2 m (4 feet) max
0.91 m
(3 feet)
min
Supply Tank with
cooling coils
drain,
normally closed
cooling in and out

7
5 Repair
This product is a precision sealing device. The design and dimension tolerances are critical to seal
performance. Only parts supplied by Flowserve should be used to repair a seal. To order replacement
parts, refer to the part code and B/M number. A spare backup seal should be stocked to reduce repair
time.
When seals are returned to Flowserve for repair, decontaminate the seal assembly and include an
order marked "Repair or Replace." A signed certificate of decontamination must be attached.
A Safety Data Sheet (SDS) must be enclosed for any product that came in contact with the seal.
The seal assembly will be inspected and, if repairable, it will be rebuilt, tested, and returned.

To find your local Flowserve representative
and find out more about Flowserve Corporation,
visit www.flowserve.com
FIS104eng REV 09/2018 Printed in USA
Flowserve Corporation has established industry leadership in the design and manufacture of its products.
When properly selected, this Flowserve product is designed to perform its intended function safely during its
useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products
might be used in numerous applications under a wide variety of industrial service conditions. Although
Flowserve can provide general guidelines, it cannot provide specific data and warnings for all possible
applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and
selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read
and understand the Installation Instructions included with the product, and train its employees and contractors
in the safe use of Flowserve products in connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are
supplied for informative purposes only and should not be considered certified or as a guarantee of satisfactory
results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express
or implied, regarding any matter with respect to this product. Because Flowserve is continually improving and
upgrading its product design, the specifications, dimensions and information contained herein are subject
to change without notice. Should any question arise concerning these provisions, the purchaser/user should
contact Flowserve Corporation at any one of its worldwide operations or offices.
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Telefax: 1 269 382 8726
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