Piston ring
Revision as of 03:58, 24 November 2010 by Addicted2speed (talk | contribs) (Created page with "A flexible iron or steel ring located in a groove near the top of the piston which seals against the leakage of the combustion gases or oil. Category:Definitions")
A flexible iron or steel ring located in a groove near the top of the piston which seals against the leakage of the combustion gases or oil.