Abstract: A dissolved ozone delivery system comprises a generator for producing gaseous ozone, a bottle for holding a liquid suitable for receiving the gaseous ozone, flow conduits for delivering the gaseous ozone to the bottle and dissolving the ozone into the liquid to form an ozonated liquid, and a multicomponent bottle closure sealing device. The multicomponent bottle closure sealing has several discrete gas flow passageways for channeling the ozone gas into the bottle, venting undissolved gas and delivering the ozonated liquid to an exterior surface for decontamination thereof or medical instruments for sterilization or use in medical or dental procedures.