A bottle lock for securely sealing a container, the bottle lock including a housing, a combination ring assembly, a shaft, a bottom locking ring, and a stopper. The bottle lock can then be inserted into a container opening and the shaft rotated until the stopper exerts the desired pressure against the container opening. The combination rings are then rotated to lock the device. The remove the bottle lock, the combination rings are realigned, the housing removed and the shaft then rotated in the reverse direction, releasing the pressure on the container opening.