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Part # 4610-26

Manufacturer Code 174704

Dimensions 12" ID, 7/16" Cross Section

Alternate Part #'s 174704 PF, O99P, PAC0512884, 90-423-1098, AEQO99P, APCO2384, PEN174704, SPG-601-1240

Product Description

Generic Filter Tank O-Ring – PF 17-4704 (174704)

Aftermarket Replacement for Pentair® PacFab Star & Mytilus Filter Tanks

✅ Features & Benefits

  • ✅ Compatible Replacement – Fits Pentair® PacFab Star & Mytilus filter tanks

  • ✅ Precision Fit – Designed as an aftermarket replacement for PF 17-4704 / 174704

  • ✅ Durable Construction – Made from chemical- and pressure-resistant elastomer for long service life

  • ✅ Proper Seal – Helps prevent leaks and ensures reliable filter performance

  • ✅ Cost-Effective – Generic alternative to OEM replacement

Specifications

  • Inside Diameter (ID): 12"

  • Cross Section: 7/16"

➡️ Compatible With

  • Pentair® PacFab Star Filters

  • Pentair® PacFab Mytilus Filters

⚠️ Tech Tips & Cautions

  • ⚠️ Always lubricate O-rings with silicone lubricant before installation (never use petroleum jelly)

  • ⚠️ Replace O-ring whenever tank is opened to ensure proper sealing

  • ⚠️ Verify model and dimensions before ordering to guarantee compatibility

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Ask A Question

?     Asked on 12/22/2017by mike salaimeh

does this ring fit for SEABLUE separation tank that use 2 UNICEL C-7660 FILTER IF NOT COULD YOU PLS TELL O-RING PART # THAT FIT AND IF YOU CARRY UNICEL C-7660 FILTER THANKS A LOT
 Reply

A  Answered on 12/26/2017 by InyoPools Product Specialist Megan C.

Please contact our office either by phone or email with the model number of your filter. If you do not know the model number, you may email photos of the filter and the label to upload@inyopools.com 
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?     Asked on 6/21/2018by William A. Anderson

What are the actual dimensions?
 Reply

A  Answered on 6/22/2018 by InyoPools Product Specialist Lennox H.

Hi, William. The dimensions are 12" ID, 7/16" Cross Section (wide). 
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?     Asked on 5/12/2020by BARBARA

If the o ring does not fit for some reason, can I return it? I have the original service manual for the Mytilus filter and the part numbers match, I don't see why it shouldn't fit. but it if doesn't can I return it?
 Reply

A  Answered on 5/12/2020 by InyoPools Product Specialist Patrick P.

Hi Barbara, Yes you can return within 30 days in new and unused condition you would just be responsible for any return shipping charges.
 Reply


?     Asked on 3/3/2022by roger welborn

what are the id and od dimensions of this o-ring
 Reply

A  Answered on 3/3/2022 by InyoPools Product Specialist Rich N.

Hi Roger.  The dimensions are 12" ID, 7/16" Cross Section (thickness of the material), so the OD  is 12-7/8".
 Reply


?     Asked on 6/14/2023by MICHAEL B HARDY

what is the measurement acress
 Reply

A  Answered on 6/17/2023 by InyoPools Product Specialist Hector F.

Hello Michael, the inner diameter dimension that we currently have for this o ring is 12 inches. 
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Review Summary

 (Average 4.75  out of 5 stars)
4 Rating
(50%) 2 of 4 customer would recommend this product to a friend.
5 star:
 
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The Most Recent Reviews

 (5 out of 5 stars)  Customer Service

Reviewed By:  Patricia M. ()

I love ordering from this company, they are very helpful and they always have the parts for my pool which is old.


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 (4 out of 5 stars)  Surprisingly... Great!!!

Reviewed By:  Chris B. from Gatlinburg, TN ()

Product works well.... Thanks for your help with my order! Great Service!! Will definitely order again from you guys... Thanks


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 (5 out of 5 stars)  

Reviewed By:  LESLIE B. from WALNUT CREEK, CA ()

PART FIT PERFECTLY


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