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Theses are very good for hydraulic systems, not so much for pneumatic.
Mostly because of the lubrication issue, and because theses are usually inserted a very fitted groves to be efficient.
The way the piston head works, it needs a very loose fit to expand with air pressure, and let the air enter the cylinder at return/pull cycle.
Really the only type of ring that would be better is V or cup rings. With a lip that acts as a check-valve on it's own. But then you would need a new piston head design.
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Originally Posted by Drake
Damnit, don't make me add "no discussing temporal paradoxes" to the rules or I'll go back in time and ban you last week.
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