Bar Hole Ringstones are flat on both sides with a straight hole through the center of the part.
The straight hole ID design restricts lateral movement of an inserted shaft or pivot or can also be used in water jet nozzles to control fluid flows.
Typical applications include precision instrumentation devices; such as measuring instruments, dial indicators, watches, altimeters, gyros, gauges, compasses, fluid or gas flow devices, gimbals, meters, and many other bearing applications.
Custom dimensions and tolerances available upon request.