Abstract: A container or bottle with a cap for resealing where the seal is produced between the upper lip and, if needed, the lateral lip of the container while the interior closing surface of the cap is provided with a sealing mass which can be deformed within limits and which, after opening and resealing of the container with the cap can be deformed to allow venting from the interior of the container by the provision of a depression formed on the lip of the container and into which the sealing mass will extend to effect sealing but which, after opening, and repositioning of the cap relative to the container, will affect only partial sealing of the container.