Piston ring — Pis ton ring (Mach.) A spring packing ring, or any of several such rings, for a piston. [Webster 1913 Suppl.] … The Collaborative International Dictionary of English
piston ring — n. a thin split ring fitted into a groove around a piston to seal the cylinder, transfer heat, and control cylinder wall lubrication … English World dictionary
piston ring — n a circular metal spring used to stop gas or liquid escaping from between a piston and the tube that it moves in … Dictionary of contemporary English
Piston ring — A piston ring is an open ended ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine. The three main functions of piston rings in reciprocating engines are:# … Wikipedia
piston ring, chrome — A piston ring which has a thin layer of chrome plate on the outer edge … Dictionary of automotive terms
piston ring expander — A spring device placed under a piston ring to hold it snugly against the cylinder wall. Also see expander … Dictionary of automotive terms
piston ring flutter — The oscillations of a piston ring which mainly occur at high engine speed and thus can cause breakage … Dictionary of automotive terms
piston ring gap — See piston ring end gap … Dictionary of automotive terms
piston ring — a metallic ring, usually one of a series, and split so as to be expansible, placed around a piston in order to maintain a tight fit, as inside the cylinder of an engine. Also called packing ring, ring. [1865 70] * * * … Universalium
piston ring — noun a ring or seal that fits around a piston, sealing between the piston and the bore in which it slides … Wiktionary