Mason container lid

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, wherein the channel portion includes a planar segment arranged in a radial direction of the lid element, an inner angled segment disposed radially inwardly of the planar segment and inclined relative to the radial direction of the lid element, and an outer angled segment disposed radially outwardly of the planar segment and inclined relative to the radial direction of the lid element, wherein the inner angled segment is inclined at about a 45° angle relative to the radial direction of the lid element and the outer angled segment is inclined at about a 40° angle relative to the radial direction of the lid element;
• 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.

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;
• 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;
• and
• an annular sealing element disposed on the peripheral portion of the lid element, the sealing element configured to directly engage the rim of the canning container, wherein an indentation is formed in the peripheral portion of the lid element, the indentation extending axially into the sealing element with respect to the interior axial direction to minimize a sealing depth of the sealing element at the position of the indentation.

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 an annular array of indentations is formed in the peripheral portion of the lid element, each of the indentations extending axially into the peripheral portion with respect to the interior axial direction, wherein the indentations forming the annular array are equally circumferentially spaced about a circumference of the peripheral portion.

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 the domed portion occupies about 68-70% of the radial extension of the lid element, the channel portion occupies about 18-20% of the radial extension of the lid element, and the peripheral portion occupies about 11-13% of the radial extension of the lid element.