Is this self explanatory

Does anyone not get this after reading it? I've been listening to a guy argue that it makes no sense and that's not how a piston ring works

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SW-User

I don't know the first thing about Piston Rings but I think the first paragraph could be phrased in a less complicated way. I was confused by the second paragraph until I realized that there is a semi colon after the word "walls". Its a little hard to see on this image. I would probably replace the semi colon with a period and form a new sentence though.

Scubaguy027 · 46-50, M

Agreed the wording is odd