CPC B65D 51/145 (2013.01) | 15 Claims |
1. A lid element for use with a canning container having a rim, the lid element comprising:
a centrally disposed domed portion;
an annular channel portion disposed radially outwardly of the domed portion; and
an annular peripheral portion disposed radially outwardly of the channel portion, the peripheral portion configured to be axially aligned with the rim of the canning container about a circumference of the rim when the lid element is engaging the rim, and the channel portion extending away from the domed portion and the peripheral portion with respect to an interior axial direction corresponding to an axial direction of the lid element towards an interior of the canning container when the lid element is engaging the rim, wherein at least a portion of the channel portion extends axially beyond an entirety of the peripheral portion with respect to the interior axial direction, wherein the at least a portion of the channel portion includes a planar segment of the channel portion, and wherein the planar segment of the channel portion extends a radial distance relative to a central axis of the lid element that is between 7-10% of a radius of an outer circumferential surface of the peripheral portion relative to the central axis of the lid element.
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