Abstract: A draping apparatus for covering dental and medical handpiece hangers. The apparatus is made from thin aluminum foil or from an aluminum foil-plastic film laminate. It is molded to allow rapid and convenient placement into handpiece hangers and the "dead soft" aluminum foil allows accurate adaptation of the cover to the hanger by finger pressure. A modification of the barrier includes a rectangular window where the aluminum is removed, exposing the translucent plastic film and allowing the function of auto-handpiece selector switches, either mechanical or photoelectric.