Seal, Shaft (u109-93ss-50)


MANUFACTURERPentair Pool Products

  (4.8 out of 5 Stars on 5 Ratings)

resources:   Q&A: Ask a Question  | Q&A: View Answers (4) | Reviews (4) | Parts (4)

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DIMENSIONS1.3" L x 1.23" W x 1.23" D

ALTERNATE PART #'S004547, 351021030, 39960149, STA605141, U10993SS

Product Description

SEAL, SHAFT (U109-93SS-50) - used on older style pumps that have a seal insert (pre-1998 for the Dura-Glas).

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Ask a Question

Asked on 06/08/2016 by

Is there any physical difference between the Pentair Shaft Seal U109-93SS (Part #5056-08) and the Generic Shaft Seal PSR100 (Part #5250-100)? Do both seals use the same type/quality of materials (stainless steel, ceramic, plastic and rubber)? I don't care that one is made by Pentair and the other by US Seal, I'm more concerned with the quality of materials. I've had some problems with rusted seals and want to make sure either seal will function the same.

Inyo Answer

Answered on 06/08/2016 by Product Specialist Scott W.

Yes sir, either seal will hold up the same. I don't know which Pentair pump you're referring to otherwise I would give you specifics, but if there's a saltwater shaft seal on the parts diagram for that pump I'd recommend purchasing that one if you're worried about rust.


Asked on 05/02/2016 by Joe

I have a AO Smith pump (p/n: 7-165201-07) 2HP serial No. 317063M. The shaft seal is leaking...what parts do I need to fix it? thanks

Inyo Answer

Answered on 05/02/2016 by Product Specialist Hector F.

We would need the front pump housing model that the motor bolts to in order to cross reference that seal for you.


Asked on 06/10/2015 by

do i need to use silicon to glue in the ceramic seal into a pre 1998 sta rite dura glas? where the silicon needs to be - between seal side and?

Inyo Answer

Answered on 06/10/2015 by Product Specialist Patrick P.

No you would not need silicone glue to install this shaft seal. We have a guide with Video on How to Install a Shaft Seal which will walk you through the installation process.


Asked on 05/08/2015 by Rich

The mechanical seal has two white side surface, one larger then other. What side is face-up on the seal plate? Also what end of the Shaft seal meet the seal plate and the Impeller. This is my first time changing the pool motor. Thank you.

Inyo Answer

Answered on 05/12/2015 by Product Specialist Patrick P.

Hi Rich, You would place white side of the shaft seal up inside of the seal plate. We have a great Video on How to Replace a Pool Pump Shaft Seal which goes into great detail on the topic.

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Ratings Summary

Average Rating:   (4.8 out of 5 Stars)

Recommended: (80%) 4 of 5 customers would recommend this product to a friend.

5 Ratings 5 star:   (4) 4 star:   (1) 3 star: (0) 2 star: (0) 1 star: (0)

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The Most Helpful Review

3 of 3 people found the following review helpful:

   (4 out of 5 Stars)

Reviewed By: from Roseville, CA ()

Pros: Good price

Cons: Bought one locally. Didn't fit

The rubber boot that the cermic stationary seal seats in was wrong diameter. I found out after I bought a new seal locally that I could reuse the old boot with the new cermic seal. I saved everything and will use it next time I replace the seal.

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The Most Recent Reviews

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   (5 out of 5 Stars) shaft seal

Reviewed By: from Pa ()

Pros: protects motor

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   (5 out of 5 Stars) Perfect replacement shaft seal.

Reviewed By: from Springfield, VA ()

Pros: perfect fit

Cons: none

Perfect fit pump motor shaft seal. Easily installed and furnished in box with written instructions. Not clear was which side of the two pieces mate to each other. Instructions only caution to pay attention when disassembling the old seal. My pump, however, had been disassembled by another individual. Using the tutorials and parts diagrams on INYOpools site provided the needed clarification. I wore uncoated, latex gloves to keep from leaving skin oil on the ceramic seal surface.

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   (5 out of 5 Stars) A Perfect Match

Reviewed By: from Beverly, MA ()

PS-100 Seal was identical to OEM original.

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