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Thread: Pentair Challenger housing O-ring/Square ring question

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    deanchat's Avatar
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    Pentair Challenger housing O-ring/Square ring question

    Hi Everyone,

    I'm rebuilding a Pentair Challenger and I ordered a new housing O-Ring but what I received was a square ring (it says "new style"). Are these interchangeable or did the housing design change at some point?

    Thanks,
    Dean
    37x16 IG vinyl, about 20K gals
    Pentair FNS 60 DE filter
    3/4 hp Pentair Challenger pump
    1 skimmer, 2 bottom returns + 1 step jet
    AutoPilot Dig 220

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    Re: Pentair Challenger housing O-ring/Square ring question

    Is your old O-ring rounded? It looks like the user manual for the Pentair Challenger does, in fact, say its a square ring. I would imagine the new ring you got will work just fine.

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    deanchat's Avatar
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    Re: Pentair Challenger housing O-ring/Square ring question

    The old O-ring is round and the new one did not look like it would fill the channel properly but (surprisingly) it works just fine. No leaks.
    37x16 IG vinyl, about 20K gals
    Pentair FNS 60 DE filter
    3/4 hp Pentair Challenger pump
    1 skimmer, 2 bottom returns + 1 step jet
    AutoPilot Dig 220

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    Re: Pentair Challenger housing O-ring/Square ring question

    Glad to hear it!

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