Pentair 24850-0008 | O-ring System 3 Cord 21" , Small
Pentair 24850-0008 | O-ring System 3 Cord 21" , Small
This Pentair 24850-0008 O-ring system 3 cord is suitable for Sta-Rite system 3 Modular Media SM series (S7M120, S7M400, S8M150, S8M500) and System 3 SD series (S7D75, S8D110) pool and spa cartridge and D.E. filters. Furthermore, it fits with the Sta-Rite System 3 Modular SMD series pool and spa D.E. Filter and System 3 pool and spa sand filter (S7S50, S8S70) and has a size of 21 inches.
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Pentair 24850-0008 Replacement Cord Tank O-Ring
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For select Pentair 21-inch filters
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Consult your User Manual to ensure this product is a compatible replacement part.

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I told my neighbor Charles that the Almaschool pickup location was no longer an option when I placed an online order. Charles took the time to pick it up for me (25mi further) and even dropped it off at my backyard. Thanks Charles I appreciate it very much!
I told my neighbor Charles that the Almaschool pickup location was no longer an option when I placed an online order. Charles took the time to pick it up for me (25mi further) and even dropped it off at my backyard. Thanks Charles I appreciate it very much!
Simon S
The customer service team quickly responded to my questions and helped me find the best option for my pool. Not only to keep my pool clean, but also save me money over the pool season!
The customer service team quickly responded to my questions and helped me find the best option for my pool. Not only to keep my pool clean, but also save me money over the pool season!
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As Advertised
The O-ring was sealed in a zip-lock bag (I was expecting the EOM packaging) but looked to be in new condition and worked well.


