How to Install a Mechanical Seal on a Water Pump? - Beston Seals

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HOW TO INSTALL A MECHANICAL SEAL
WWW.BESTONSEALS.COM
ON A WATER PUMP? What is the primary purpose of a
seal in the water pump? It is to prevent fluid
from leaking into the atmosphere along the
rotating shaft. Hence, the selection of the right
mechanical seal is critical when you consider the
reliability and safety of the operation.
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STEPS TO REPLACE MECHANICAL SEALS
IN CENTRIFUGAL PUMPS If you check the most
prominent causes of pump failure, then mechanical
seal failure is typically one of them. Therefore,
the right installation of the seal is very much
important. A mechanical seal on a water pump is a
shaft spins at incredible speed and rotates an
impeller. Know the processes for how to replace a
mechanical seal on a water pump. WWW.BESTONSEALS.
COM
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HERE IS A STEP-BY-STEP PROCESS TO ACHIEVE
THE TASK
CUT OFF THE POWER You need to power off the pump
before installing seals. Thus, it is not in
motion. Always ensure that it is plugged
out. ISOLATE THE FLUID You should shut the inlet
and outlet isolation valves and drain the pump
casing by removing the drain plug. DISCONNECT THE
CENTRIFUGAL PUMP You should remove the space
element in the coupling. Remove the casing bolts
and slide the remainder. Thus, you can access the
mechanical seal without the need for
disconnecting the inlet and outlet piping. In
pumps that do not have back pull-out design,
you will have to disconnect the pump completely.
In pumps with close coupled design, the entire
pump or motor has to be removed.
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REMOVE THE IMPELLER
The mechanical seal is located behind the
impeller on the pump shaft. If it is screwed,
then you need a wrench to hold the shaft in
place. If it is bolted, then you need to hold the
shaft and remove the bolt. DETACH THE SEAL You
can access the stationary and rotary seal parts.
The rotary parts are typically held in place
along the shaft with the help of set screws. You
should remove the set screw and slide off the
rotary seal part. Now remove the stationary part
of the seal from the seal chamber bore or casing.
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REPLACE THE SEAL
Now place the new mechanical seal onto the shaft.
Slide the replacement seal parts carefully along
the shaft. Press the stationary part into the
casing or seal chamber bore using a new O-ring.
You need to follow the instructions for setting
the rotary portion back onto the shaft correctly.
This step is very crucial. You should install a
mechanical seal in a clean working space. Avoid
touching the front of the seal face. Keep the
seal in the packing till you actually install
it. DETACH THE SEAL Put the impeller in place.
Reconnect the casing. Now, reconnect the
pump. Beston Seals is ISO certified company
specializing in providing solutions to all types
of leakages by manufacturing mechanical seals and
sealing components as per customers drawings,
samples, or requirements. We are one of the best
rotary union and mechanical seal manufacturers in
India based in Mumbai, Maharashtra. To know more
about mechanical seals call on 91-9820007401 or
email info_at_bestonseals.com.
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CONTACT US

• 91 9820007401
• info_at_bestonseals.com www.bestonseals.com
• Gala No. 16, Ground Floor, Opp. Kamla
  Engineering, Munshi Compound, Mira Road (E),
  Mumbai