Pentair Shaft Seal 5/8" PSR-200 - 354545S



Part # 354545S

  5 Average  



Part # 354545S

Dimensions 2.5" L x 1.75" W x 1.75" D (5/8" I.D.)

Alternate Part #'s 35-4545, 354545, PSR-200, 35-102-1405, PAC-101-4545, PEN354545S

Product Description

REPLACES original Pentair brand 5/8" mechanical shaft seal is used on the Pentair Superflo and the following Pentair / Pac Fab pumps:  Dynamo, Dynatron, Challenger, Pinnacle and Dynamite.  


?     Asked on 4/23/2021by Inyo Visitor

My pump has a slow leak underneath when on low rpm setting 2200. When I hit the quick clean button, 3450 rpm, the drip becomes much more frequent. Any recommendations? I purchased the shaft seal, impeller oring and seal diffuser oring.

A  Answered on 4/23/2021 by InyoPools Product Specialist Robert M.

The shaft seal or volute/pump body o-ring should fix the leak. If not, there may be a small crack in the seal plate or pump housing.

?     Asked on 6/19/2020by Inyo Visitor

Will this fit a sand dollar/pentair dynii-n2-2?

A  Answered on 11/20/2020 by InyoPools Product Specialist Hector F.

Hello, yes this shaft seal is compatible with the Pentair/ Pac Fab Dynamo pool pump. 

?     Asked on 4/7/2020by Inyo Visitor

Should I also replace the seal bracket o-ring when replacing the seal?

A  Answered on 4/7/2020 by InyoPools Product Specialist Hector F.

I believe that you are referring to the seal plate housing gasket and we would recommend also replacing that. You just need to confirm the pump model to cross-reference those parts. 

  • Commented on 4/7/2020 by Product Owner

    I believe SuperFlo refers to it as the seal bracket in their parts list. Thanx

?     Asked on 8/27/2019by Inyo Visitor

What are the correct replacement bearings for pump motor AO Smith 2HP SQ1202? Thank you.

A  Answered on 9/12/2019 by InyoPools Product Specialist Hector F.

The front bearing part number is 5270-32 and the rear end bearing is part number 5270-31

?     Asked on 8/12/2019by jerry

how do you remove the impellor from a pentair challanger motor shaft to replace the shaft seal

A  Answered on 8/13/2019 by InyoPools Product Specialist Jessica C.

Hi, Jerry. There is a video on How To Remove Stubborn Pool Pump Impellers as well as How To Replace a Pool Motor Shaft Seal for your replacement. 

?     Asked on 6/4/2017by Inyo Visitor

i have a dynamo high performance 1.5 hp above ground pool pump, we are needing the pump shaft gaskets . Do you have those? not sure if this is the part # for our pump but is has p/n 340210, serial # 0306207130016L.

A  Answered on 6/9/2017 by InyoPools Product Specialist Patrick P.

This would be the correct shaft seal for your Dynamo pump.

?     Asked on 4/17/2017by Haskell Davis

my pentair pool pump 1.0 HP SF-Ni - 1a1340038 I believe i need a shaft seal. What all do I need?

A  Answered on 4/17/2017 by InyoPools Product Specialist Scott W.

I need your pump model to recommend the correct shaft seal for your pump.

?     Asked on 8/8/2016by frank fontenot

is this suitable for salt water pools?

A  Answered on 8/16/2016 by InyoPools Product Specialist Lennox H.

Hi Frank, This shaft seal is compatible with saltwater pools.

?     Asked on 1/25/2012by Guest

How do I change the shaft seal on my pool pump?

A  Answered on 1/25/2012 by InyoPools Product Specialist Patrick P.

Changing the shaft seal is quite simple. Here's How To Replace a Pool Motor Shaft Seal.


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Pliers

1     0

Bad Motor Seal

Written on 6/27/2019 by Guest

Installing this new seal was easy on my motor. After removing the back cover of the motor and immobilizing the shaft and removing the impeller, the shaft seal simply slid off. The new one replace very easily.

Were these instructions helpful? 


Review Summary

 (Average 5  out of 5 stars)
3 Rating
5 star:
4 star:
3 star:
2 star:
1 star:

The Most Recent Reviews