Abstract: A new and useful coke oven door which is simple in construction but provides complete sealing efficiency. A pair of supporting holes are formed on each of upper and lower portions of the side plates of the door body, and through the supporting holes a locking bar extends which has on the center portion an arm for rotating and on both ends rollers eccentrically located with respect thereto. By rotating the locking bar with the arm, the door can be moved slightly backward or forward when removing or installating lest the knife edge should scratch the door sealing frame.