from The Century Dictionary and Cyclopedia

  • n. In steam-engines, a ring fitting in a groove round a piston to keep it steam-tight by confining the packing.


Sorry, no etymologies found.


  • They removed two of the piston junk-ring studs, screwed in two strong iron eye-bolts by way of handles, doubled the wire-rope, and set half a dozen men to smite with an extemporised battering-ram at the end of the piston-rod, where it peered through the piston, while the donkey-engine hauled upwards on the piston itself.

    The Day's Work - Volume 1

  • Walker dived below to the engine-room, where he had already disconnected the rods broken or bent by the fracture of a guard ring, which, in its turn, was injured by the blowing out of a junk-ring, a stout ring of forged steel secured to one of the pistons.

    The Captain of the Kansas


Log in or sign up to get involved in the conversation. It's quick and easy.