ChrisJ your response seems to indicate that I shouldn't. I know I can reuse them. The question I'm trying to ask is should I?
I think it would probably be a safe risk to reuse the fiber ones, they don't crush down to nothing.
Reusing the copper ring ones is just asking for a do-over in my (do-over enhanced)
opinion.
The only risk involved either way is do-over... you'll either have poppy exhaust leak
sounds, or not. If you can't tell you have an exhaust leak from the sound, you probably
don't have an exhaust leak.
-Mike