Replacing WhisperFlo Pump Seal

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Water treatment guide

Removing Old Pump Seal

Knockout the old pump seal by gently tapping it from the center of the seal plate with a screw driver and a hammer as shown on the image below. Also remove the old pump seal ceramic part that is still inside the impeller. Clean both the seal plate and impeller center pump seal chamber for the new replacement seal.


Install the New Pump Seal

Now flip the seal plate so you can see the the pump seal chamber and the black seal plate gasket is facing up as shown in the picture below. Apply a little Silicone Sealant at the bottom of the seal plate groove where the metallic pump seal spring is going to be placed to get extra tight seal. Align the new metallic pump seal spring at the center of the seal plate and tap it in place with a round PVC pipe or any other suitable material to push the pump seal all the way in (do not directly hammer in the seal spring it can be damaged). Now insert the ceramic piece of the pump seal to the center of the impeller seal chamber.



Finally, assemble back the seal plate to the motor, secure it with the four seal plate bolts, insert impeller on to the motor shaft and secure it with the impeller screw. Reassemble the pump back following the the steps show so far in the reverse direction. Please note that you may also want to replace Seal Plate gasket, Diffuser gasket, and Imperller O-ring so your pump is completely rebuilt with new components.


WhisperFlo pool pump Parts

Do you need to rebuild your Pentair WhisperFlo pump?

Well, we have a convenient and affordable solution with every part needed to rebuild your pump packed in one kit:

The GO-KIT-32 includes:

Pump seal assembly (part #16)
Seal Plate O-ring
strainer cover O-ring (part #3)
Imperller O-ring (part # 15)
Diffuser gasket (*Part #9)

Replacing your Pentair WhishperFlo pump motor?
Our original Pentair replacement motors and rebuild kit will save you a lot of money! [Motors] and [rebuild kit]



Pool and Spa Pump Accessories


Pool Pump wiring conduit with 4-wire conductors, elbow and nipple

Make installation of a pump easy and safe with this 4-wire 6 ft. electrical conduit built with heavy-duty all-weather material for outdoor installation. Includes metal elbow and nipple to make connection to any pump very simple.

Aladdin MagicLube #631 Lubricant for o-rings, bearings PTFE based 5 oz. for pool and spa underwater application
Praher CPVC coupler with O-ring 2" SLIP x SLIP for pump and heater plumbing
1 1/2" SLIP x 1 1/2" SLIP
2" MIP x 2" SLIP
1 1/2" MIP x 1 1/2" SLIP
Coupler 2" SLIP x 2" MPT for 2" PVC pipe
Coupler 1 1/2" SLIP x 1 1/2" MPT for 1 1/2" PVC pipe
CPVC pipe 2" threaded ends - cut-in-half and use for pump suction/return
CPVC pipe 1 1/2" threaded ends - cut-in-half and use for pump suction/return
Spring-Loaded Check Valves: When two or more pounds of water pressure is applied the spring-loaded gate opens. The valve relys on a small internal spring to close the disc whenever water is not moving in the intended direction.
Spring-loaded check valve 1/2 lb. pressure 2" pipe
Spring-loaded check valve 1/2 lb. pressure 1 1/2" pipe
Check Valve: these valves insure that water flows in one direction only and prevent back-flow when pool/spa pump is turned off
7235 - 1 1/2" - 2" 180 degree Jandy check valve
7305 - 2" - 2 1/2" 180 degree Jandy check valve
7511 - 1 1/2" - 2" 90 degree Jandy check valve
7512 - 2" - 2 1/2" 90 degree Jandy check valve
Lubricants and sealants for wet bearings, motors, pumps, O-rings. It protects metal and plastic (PVC) from common pool chemicals and salt
Part #
Zodiac Jandy AquaLink RS Remote Control relay kit for 2-Speed pumps
Provides control of a high voltage, 2-speed pump motor.
20 Amps Max
2HP Max at 220 VAC
Aqua Shield Lubricant for pump strainer O-ring 8 oz.





Pentair WhisperFlo Strainer Basket part # 070387