piston ring
81Packing ring — Packing Pack ing, n. 1. The act or process of one who packs. [1913 Webster] 2. Any material used to pack, fill up, or make close. Specifically (Mach.): A substance or piece used to make a joint impervious; as: (a) A thin layer, or sheet, of… …
82junk ring — noun Etymology: junk (I); from its originally use in confining the hemp packing round the piston of a steam engine : a wide ring around the piston of an internal combustion engine forming the base for piston rings …
83Junk ring — Junk Junk, n. [Pg. junco junk, rush, L. juncus a bulrush, of which ropes were made in early ages. Cf. {Junket}.] [1913 Webster] 1. Pieces of old cable or old cordage, used for making gaskets, mats, swabs, etc., and when picked to pieces, forming… …
84Townend ring — A Townend Ring is a narrow chord cowling ring round the cylinders of a radial engine to reduce drag and improve cooling. The Townend ring was the invention of Dr Hubert Townend of British based Boulton Paul Aircraft in 1929. [Original 1930… …
85scraper ring — The bottom ring on a piston whose function is to scrape lubricating oil away from the cylinder walls of a reciprocating engine. This prevents the oil from getting into the combustion chamber of the cylinder. Also called a wiper ring …
86pinned ring — A steel pin, set into the piston, is placed in the space between the ends of the ring. The ring is thus kept from moving around in the groove …
87junk-ring — junkˈ ring noun A metal ring confining the packing of a piston • • • Main Entry: ↑junk …
88distance ring — noun : a ring (as one shrunk on a piston) to separate two other rings …
89lantern ring — noun : a packing ring for shaft or piston rod glands having a cross section resembling the letter H * * * Mach. gland2 (def. 1) …
90fire ring — The circle of metal in a head gasket just where the piston comes through …
