Retaining rings and snap rings are fasteners used to axially position a component on a shaft or in a bore

Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings.

Miniature bearings and instrument bearings carry moderate radial and thrust loads at low operating torque while providing high performance in a small envelope design.

Ring gages are used for go / no-go assessment compared to the specified dimensional tolerances or attributes of pins, shafts, or threaded studs

O-rings are solid-rubber seals that are shaped like a doughnut.

Back-up rings or anti-extrusion rings are washer-like devices used to prevent seals from extruding through gaps while under pressure.

Slip rings are metal rings that provide a continuous electrical connection through brushes on stationary contacts.