A seal for bridging an interface between an aircraft exhaust deck and a trailing edge of an aircraft exhaust system includes a sheet, a spacing element, and a tensioning element. The sheet has a fixed end, a cover portion, a movable portion, and a free end. The fixed end is anchored to the trailing edge. The cover portion extends upstream from the fixed end and across the interface. The movable portion is located adjacent the aircraft exhaust deck. The spacing element engages the movable portion and defines a gap for cooling air between the movable portion and the aircraft exhaust deck. The tensioning element is attached to the free end and provides tensioning force keep the cover portion taut.