"O rings" are a type of rubber ring or seal that is usually round and shaped like the letter "O". They are used to prevent liquids or gases from leaking in machinery or pipes by creating a tight seal.
Sentences with «o rings»
It features light padded triangle top, fringe trim, adjustable ties, with matching o ring, side ties bottoms, and fitted. (pinkbasis.com)
Cleaned up and installed new O ring on slave cylinder. (yourmechanic.com)
Not just in O rings of launchoads but anywhere. (judithcurry.com)