How to Replace Pentair 356780 O-Ring Seal Plate

If you are dealing with a leaking pool pump, it may be time to replace the Pentair 356780 O-ring Seal Plate.

This O-ring seal plate is an important component of the Pentair pool pump and it helps to keep your pool water from leaking out. Replacing this seal plate can be a relatively easy process if you have the proper tools and know-how.

Read on to learn the steps for replacing the Pentair 356780 O-ring.

Step 1: Gather the tools you need. For this job, you will need a flat head screwdriver, a pliers, and a new Pentair O-ring Seal Plate.

Step 2: Disconnect the pump from any power sources. This is a safety precaution that should always be taken when working with pool pumps.

Step 3: Take the cover off of the pump and locate the O-ring seal plate. This will be located around the impeller, which is the part of the pump that circulates the water.

Step 4: Use the flat head screwdriver to remove the screws that hold the O-ring seal plate in place.

Step 5: Take the old O-ring seal plate out and replace it with the new one. Secure the new O-ring seal plate with the screws you removed earlier.

Step 6: Reassemble the pump and reconnect it to any power sources.

Step 7: Turn the pump on and check for leaks. If there are any, you may need to tighten the screws or replace the O-ring seal plate.

Replacing the Pentair 356780 O-ring Seal Plate is a relatively easy process that takes about 30 minutes to complete. It is important to always make sure the pump is disconnected from any power sources before beginning the replacement process. 

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