a reusable closure device which is especially intended for use on conventional 18 . 9 liter plastic bottles in common use for supplying bottled drinking water . the device includes a plastic cap with a replaceable resilient seal . a pair of levers are mounted on the cap for pivoting movement between a first position which allows the cap to be placed on or removed from the bottle and a second position in which cam surfaces on the proximal ends of the levers engage a groove in the neck of the bottle to press the cap down on the bottle . the levers are approximately l - shaped and legs of the levers containing their distal ends interengage in the second position to form a carrying handle . at the present time , the abovementioned bottles are provided with non - reusable heat - shrink plastic caps which are discarded by users resulting in environmental waste . the present invention eliminates this waste .