U.S. Seal PS200 mechanical shaft seal assembly for pool pumpsU.S. Seal PS200 Mechanical Seal Assembly In stock$1299
U.S. Seal PS200 mechanical shaft seal assembly for pool pumps
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U.S. Seal PS200 Mechanical Seal Assembly

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$1299
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Quick overview

  • Standard PS200 seal The most common pool pump shaft seal size, fitted to a wide range of pool and spa pumps.
  • Cross references Also sold as PS-200, PS-3867, 35-423-1020 and 5250-210, so it replaces any of those numbers.
  • Complete assembly Both halves of the seal come in the pack, ready to fit to the shaft and the seal plate.
  • Pentair and Aqua-Flo fit Listed for the Pentair Challenger high head and high flow models and the Aqua-Flo Dominator high head and Tub-Master TMCP pumps.
  • Stops the drip A worn shaft seal lets water past into the motor; replacing it is the standard fix for a pump leaking between the wet end and the motor.
  • Heavier grades exist U.S. Seal also offers a heavy duty version and the extra heavy duty PS-1901 in the same PS200 size.
Full description and specifications ↓

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Product details

The U.S. Seal PS200 is the mechanical shaft seal assembly used on a large share of residential pool and spa pumps. It seals the motor shaft where it passes through the seal plate into the wet end, keeping pool water out of the motor. When a pump starts dripping between the housing and the motor, this is almost always the part that has worn.

One seal, several numbers

The same seal is catalogued as PS-200, PS-3867, 35-423-1020 and 5250-210 by different pump makers and distributors. If your parts list shows any of those, this is the replacement. It is listed for the Pentair Challenger high head and high flow models and for the Aqua-Flo Dominator high head and Tub-Master TMCP series pumps.

Fitting it

The assembly includes both halves of the seal. Clean the seal plate bore and the shaft, press the stationary half into the plate and slide the rotating half onto the shaft without touching the polished faces. A light film of silicone lubricant on the rubber parts helps them seat. If the pump has been leaking for a while, check the motor bearings while it is apart.

Specifications
Brand U.S. Seal
Manufacturer part number PS200
UPC 852661157087
Type Mechanical shaft seal assembly
Replaces PS-200, PS-3867, 35-423-1020, 5250-210
Fits Pentair Challenger high head and high flow pumps, Aqua-Flo Dominator high head pumps, Aqua-Flo Tub-Master TMCP series pumps
Part type Pool pump part
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Is this the same as a PS-200 or PS-3867 seal?
Yes. PS200, PS-200, PS-3867, 35-423-1020 and 5250-210 are all cross references for this seal assembly.
How do I know my pump takes a PS200?
Check your pump parts diagram or the number on the old seal. The PS200 is listed for the Pentair Challenger high head and high flow models and for Aqua-Flo Dominator and Tub-Master TMCP pumps, among many others that use this size.
What are the signs the seal has failed?
Water dripping from the gap between the pump housing and the motor, rust streaks on the motor face, or a motor that has started to grind or trip. Replace the seal before water reaches the motor bearings.
Should I use a heavier seal instead?
For most residential pumps the standard PS200 is the correct part. If you want a longer service life, U.S. Seal also makes a heavy duty version and the extra heavy duty PS-1901 in the same size.
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