Pump Seal, Extra Heavy Duty PS4280 (Saltwater Pools) - PS-4280



Part # 5250-250

By U.S. Seal Manufacturing

  4.89 Average  



Part # 5250-250

Manufacturer Code PS-4280

Alternate Part #'s AS-3890V, P-84, P84-3, PS-1907, PS4280, PSR-3890V, R0479400, SP3200EE, SP3200VSP, SP3200VSPND, SP3400VSP, SP3400VSPVR, SP4000, SP4000X, SPX3200SA, SPX3200SAV, SPX4000SA2, SPX4000SAV, 35-426-3014, APCPS4280, USSPS4280

Product Description

This is an extra heavy-duty shaft seal. It's made with a carbon graphite, stainless steel, and viton rubber.  This is the longest lasting seal available and is designed for use with ozonators and salt chlorine generators as well as regular pool and spa use.

Frequently Bought with this Shaft Seal

Shaft Seal Lubricant


?     Asked on 12/20/2020 by Kevin Becker

Will this work on a Hayward pump model #SPX3205Z1PE, serial # 21111404053495012

A  Answered on 12/21/2020 by InyoPools Product Specialist Joe S.

Hello Kevin, Yes if you have a MODEL #SP3200 & #SP3200EE FULL-RATED & MAX-RATED SERIES EF1500 then this would be the correct seal.

?     Asked on 10/2/2020 by Mike

Will this fit on a Jandy FloPro 1.0 - 2. I'm replacing the old Century B980 2 speed motor with a Century Centurion B2980 2 speed motor. All voltage and HP ratings are exactly the same. Thank You.

A  Answered on 10/14/2020 by InyoPools Product Specialist Joe S.

Hey Mike,Yes,if you have the Jandy FloPro FHPM Series Pump (2008-Present) the U.S. Seal Manufacturing Pump Seal, Extra Heavy Duty PS4280 (Saltwater Pools) would be the correct shaft seal.

?     Asked on 5/8/2020 by William Sayre

Will this work on a FHPM2.5?

A  Answered on 5/8/2020 by InyoPools Product Specialist Patrick P.

Hi William, Yes this is the correct shaft seal for your FHPM2.5.

?     Asked on 4/27/2020 by Lyndell Lach

Does this seal fit my model # FHPM 1.5, ser # D16JD1207, b2854 pool pump motor

A  Answered on 4/27/2020 by InyoPools Product Specialist Patrick P.

Hi Wayne, yes this is the correct replacement shaft seal for your FHPM 1.5

?     Asked on 3/25/2020 by Richard M Gaudiosi

My Pump-1 1/2 Hp, Blue Haven Max, Item # SP3210X152BH was making an oscillating noise, not a steady hum, so I pulled the motor off the pump and noticed the defuser ring was on backwards. It scored the impeller, so I'm replacing some of the parts. What parts should I replace, and will the heavy duty shaft seal work with this pump. Also, can I use a larger impeller to make the pump move more water, or what can I do to make it more efficient? Can a 2 speed motor be used on this system?

A  Answered on 3/25/2020 by InyoPools Product Specialist Lennox H.

Hi, Richard. You will need to replace the Impeller - SPX3210C, Impeller Ring - SPX3021R along with this Heavy Duty Shaft Seal will work with your existing pump and motor. You can increase the impeller size, but you will have to replace the motor to match also. Yes, you can use a dual speed motor - SPX3210Z2MER.

?     Asked on 2/11/2020 by Mark Leggett

is this the correct seal for the tristar pump as listed below? Motor, 1-1/2hp Full Tristar 115/208-230v (SPX3215Z1BER, HSQ1152, SP3215Z1BE, SPX3215Z1MR, SP3215Z1MR I have a salt pool and this exact motor in a Hayward tristar pump. Thanks

A  Answered on 2/12/2020 by InyoPools Product Specialist Lennox H.

Hi, Mark. Yes, this is the correct pump shaft seal for the TriStar Pump used with saltwater. 

?     Asked on 11/22/2019 by Roy Ramsay

Replaced AO Smith motor #0-193989-05 with Century B2982, intend to use existing Jandy Flopro FHPM pump. Is PS4280 the correct Shaft Seal?

A  Answered on 11/25/2019 by InyoPools Product Specialist Hector F.

Yes, that would be the correct shaft seal for your model FloPro FHPM pump. 

?     Asked on 4/15/2019 by Nancyjean Nettles

Will this heavy-duty seal fit a Century two-speed pool motor B2983? I need to replace the motor, which is now screaming, and need both a shaft seal & gaskets. I'm attaching a photo of the motor that needs replacing


A  Answered on 4/15/2019 by InyoPools Product Specialist Lennox H.

Hi, Nancyjean. Unfortunately, you will need to provide us with the pump housing model or name in order for us to confirm which shaft seal will be required.

?     Asked on 4/15/2018 by Rick

Is this seal a match for hayward / century pump model SP3210Z1BE? For use in salt water pool....

A  Answered on 4/16/2018 by InyoPools Product Specialist Hector F.

Yes, as long as you have the original Tristar motor on the Tristar pump then that would be the correct saltwater shaft seal. 

?     Asked on 8/2/2017 by Ed

I am looking to replace my Hayward northstar sp1615z1mnsc motor for a salt water pool. Is this the correct seal? thanks!

A  Answered on 8/4/2017 by InyoPools Product Specialist Lennox H.

Hi, Ed. This Pump seal is compatible with Northstar manufactured after 2008.  

?     Asked on 1/18/2017 by Dana

What seal would work for SP605X7 or SP2607X1 Heyward pump?

A  Answered on 1/19/2017 by InyoPools Product Specialist Lennox H.

Hi, Dana. The following pump seals SPX1600Z2 (OEM), AS-1521 (Generic) and or PS-3868 (Saltwater) will work with the Hayward SP2600 Series pump.

?     Asked on 7/22/2015 by Stefan

Hi, will this seal work with older 2002-2007 Northstar pumps? I have a model SP4015X20NS and would like to select this seal over the hayward seal because I use a salt chlorine generator and an ozonator. Thanks!

A  Answered on 7/23/2015 by InyoPools Product Specialist Lennox H.

Hi Stefan, The correct Shaft Seal for your Northstar Pump 200-2007 will be the Seal Assembly (1998-2007) (SPX4000SA2).

?     Asked on 1/25/2012 by 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.

?     Asked on 1/17/2012 by Guest

Why should I purchase the heavy duty seal?

A  Answered on 1/17/2012 by InyoPools Product Specialist Patrick P.

The heavy duty shaft seal features carbon graphite, stainless steel, and Viton rubber. The properties of this seal contribute to the resistance of chemical corrosion. This is the best choice for salt chlorine generators or ozonators.


Est. Repair Time

Less than 1 hr

Tools Needed


replacing motor

Written on 6/26/2018 by Guest

New seal was recommended as I was replacing the pool motor.

Used the INYO DIY pics and finished the replacement quickly and easily.

Were these instructions helpful? 


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