Identify filter housing o-ring

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  • Last Post 17 April 2022
tonyleary posted this 16 April 2022

I cannot for the life of me find out what o-ring this needs. I'm also unable to find any manufacturer or model number on it. The filter that I use is a unicel c8409. The pump I have is a Hayward super pump II. That filter says it fits a Hayward CX-900 but I've tried it and it's only 9" in diameter. Mine measures 11.5". It leaks around the rim of the cap when under pressure. Please help.

InyoRich posted this 17 April 2022

Hi Tony, that kind of looks like this Waterway Proclean Cartridge Filter.  If so, you would need this Lid O-ring - 805-0448B.  Don't forget to clean the surfaces and put some lubricant on them to keep it sealing like new.  

Does the sticker on the side say ProClean?  This model of filter was sold under a bunch of different names (Namco and Recreation Warehouse as well as Waterway Proline). 

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