Greg Gumbel at the Shot Tower restaurant in Dubuque, IA, while back for Loras College Homecoming, October 13, 2007. Picture was by Rachel Goedken, Loras College Alum 2003. This should be included in the Greg Gumbel article. ...
Found on
http://en.wikipedia.org/wiki/Piston_rings
Metal rings seated in grooves on the outside of a piston that are used to ensure a proper seal between the piston and the cylinder wall. Typically, three (3) rings are used: two (2) ensure proper compression is produced and one (1) prevents oil from leaking into the cylinder.
Found on
https://www.encyclo.co.uk/local/22335
No exact match found.
