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

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