This rubber cover seals the opening at the straw elevator where it meets the threshing unit. It prevents crop material and dust from escaping the elevator housing while allowing the moving chain-and-slat assembly to pass through without obstruction. A torn or missing cover allows debris to accumulate around the elevator drive components, which can accelerate chain wear and cause material loss. The cover is formed to match the profile of the elevator outlet so it maintains contact with the moving surface during operation.