This just popped in my head when I was wondering how could I make them last longer.

I've heard about these plastic hardeners that are used to mould plastic. You guys know like epoxy glue you mix the hardener with other substance like resin. The question is that could it be used with these plastic rings and would it make them harder? For example if I would use it in the holes that wears out like in one session at the worst.

Any thoughts?