Child resistant airtight lid

An airtight lid, comprising:

• an outer cap comprising a first wall and a first skirt depending from the first wall, wherein the first wall includes a protrusion extending radially inwardly from the first skirt;
• an inner cap comprising an annular recess defined by a base annular wall and outer and inner skirts extending from the base annular wall, a central recess defined by the inner skirt and a central wall attached at an end of the inner skirt opposite from the base annular wall, the central wall comprising a first plurality of arcuate slots disposed therethrough;
• a gasket comprising a sheet of compressible material having a second plurality of arcuate slots disposed therethrough;
• and
• a snap cap comprising a flat plate having a plurality of flexible snap fingers extending therefrom;
• wherein a subassembly comprises the gasket secured between the inner cap and the snap cap by the plurality of flexible snap fingers disposed through the first and second pluralities of arcuate slots, wherein an outer edge of the gasket when assembled in the subassembly between the snap cap and the inner cap extends radially beyond both of the snap cap and the inner cap;
• and
• wherein the protrusion extending radially inwardly from the first skirt snaps over a shoulder on the outer skirt to attach the outer cap over the inner cap.

An airtight lid, comprising:

• an outer cap comprising a first wall and a first skirt depending from the first wall, wherein the first wall includes a protrusion extending radially inwardly from the first skirt;
• an inner cap comprising an annular recess defined by a base annular wall and outer and inner skirts extending from the base annular wall, a central recess defined by the inner skirt and a central wall attached at an end of the inner skirt opposite from the base annular wall, the central wall comprising a first plurality of arcuate slots disposed therethrough;
• a gasket comprising a sheet of compressible material having a second plurality of arcuate slots disposed therethrough;
• and
• a snap cap comprising a flat plate having a plurality of flexible snap fingers extending therefrom;
• wherein a subassembly comprises the gasket secured between the inner cap and the snap cap by the plurality of flexible snap fingers disposed through the first and second pluralities of arcuate slots;
• wherein the protrusion extending radially inwardly from the first skirt snaps over a shoulder on the outer skirt to attach the outer cap over the inner cap;
• and
• wherein a plurality of radially oriented elongate protrusions is circumferentially distributed on an inner surface of the first wall and a surface of the annular wall facing away from the annular recess includes an arrangement of a plurality of ramped elongate radially oriented protrusions circumferentially distributed thereon.