I have a Hayward star clear plus filter and it has an e-ring that keeps the knob from coming out of the box when you open the filter for cleaning. I have already replaced 3 of these e-rings because they break. I now have an aquarite system so I'm wondering if the salt is the problem. That said I did replace one or two of these before converting to a salt system. Is there an aftermarket part that won't corrode like this one does or is there a way to treat it? I should also mention that the chemicals have been well maintained so the PH hasn't been off for any length of time.
Thanks for any advice you might have. Also is there a good parts dealer that would sell this at a reasonable price? I have seen it for anywhere from $5 with $9 shipping to $20