A package for abrasive wheels is provided. The package comprises a base providing an inner space between a side surface, an open end having a diameter D.sub.open and a closing plane end having a diameter D.sub.closed, the inner space being adapted to contain stacked abrasive wheels having a diameter D.sub.wheel, the side surface having a projecting portion having a diameter D.sub.proj, that projects from the closing plane end; and a cover configured to couple to the base at the open end so as to close the inner space, the base and the cover insulating the abrasive wheels against atmospheric agents when coupled, the cover comprising a projection shaped to define an annular plane portion having an inner diameter D.sub.in and an outer diameter D.sub.out.

Collapsible bottles and methods of use are disclosed in which the bottle is fabricated, collapsed at a body section including circular or spiral folds, provided with a condensed or concentrated substance, and sealed. Subsequently, the bottle may be unsealed, expanded, provided with a liquid, sealed, and mixed to bring the substance to a desired concentration or consistency.

Disclosed herein are child-resistant containers. Also disclosed are methods using the modular containers and methods of storing substances in containers. The containers have a glass base and a plastic cap and provide for child-resistant containers. A user can releasably remove the cap from base with a squeeze and lift sequence on the sides of the cap. For example, the user squeezes opposite sides of the container cap, which releases a locking mechanism and allows for removal of the cap by lifting or pulling the container cap off from the container base. The containers are modular and stackable.

The present disclosure relates generally to containers and container lids. In at least one embodiment, the disclosed containers and container lids provide a liquid-tight seal with the inclusion of a separately attached ring that generally eliminates material-trapping seams. For example, in certain embodiments, a container and a container ring for attaching to the rim of the container is disclosed. In these embodiments, the container ring attaches to the rim of the container such that a liquid-tight vertical seal is formed, thereby reducing or eliminating material-trapping seams.

The present disclosure relates generally to containers and container lids. In at least one embodiment, the disclosed containers and container lids include an improved seal structure that forms a liquid-tight seal. For example, in certain embodiments, the improved seal structure is included on a built-in ring around the rim of the container. In some embodiments, the improved seal structure is included on a separate container ring for attaching to a container. In these embodiments, the contents of the container may be poured out of the container such that virtually no excess content is trapped in-between seams.