The filter turned out to be damaged but it looks like the damage was caused by dry rot (didn't know plastic could do that). The plastic bracket that holds the all-important O-ring literally fell apart when the box was opened. As I picked up the pieces, they began to crumble into dust. I know this water filtration system is old, but filters of this age should not be sold. This product appeared to be expired and/or in very poor condition before it was shipped to the customer.
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