You can clean them. Just take them out, spray thoroughly with WD-40, wring the out in a clean rag, and repeat as necessary.
You shouldn't need new rings unless they are damaged. I accidentally cut mine when assembling one time. They weren't fully seated and ripped when I pushed the stachions past them. New rings are in the seal kit (~$15) but are probably available separately from Fox if you ask really nicely.
I would recommend that you buy some aftermarket Enduro seals (google Enduro seals, you'll find'em). I had trouble with my fox seals leaking (two sets), i don't think they are that great. Enduro seals come with a set of wipers, and another set of seals that replace that foam ring. They cost like 23 bucks, but they are worth it. -t
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