Shown here are the four simple steps in the use of the new lid and metal band closure which will replace the more familiar zinc mason cap--conserving zinc so vitally needed for direct war materials. The Containers Division of the War Production Board (WPB) is encouraging manufacturers to make many millions of these closures available for this year's canning. Jar at the left, having been sterilized, is ready to be filled. Second jar shows the position of the lid immediately after filling, the rubber gasket is placed in between the lid and the mouth of the jar. Third jar: the metal band is screwed on tightly and then slightly loosened and processing begins. After processing is completed, band is tightened again. Jar at the right shows how the band can be removed when the food has thoroughly cooled and the vacuum will hold the lid tightly in place. A truly all-glass package. To open, insert a knife to break vacuum, and lid lifts off easily