DESIGNED FOR USE WITH WECK CANNING JARS, these flexible white plastic lids preserve the freshness of foods stored in the refrigerator or freezer. As the lids expand slightly, there is a lower chance of glass breakage when the food expands as it freezes.

LARGE SIZE (4", 100mm) Fits models 738, 739, 740, 741, 742, 743, 744, 745, 748, 974. Please see attached model list - 3rd line represents diameter (60mm = Small, 80mm = Medium, 100mm = Large)

BPA-FREE FLEXIBLE PLASTIC will not react with foods or absorb odors, providing a strong snap on seal . Use these convenient lids after breaking the seal on your Weck jars.

DISHWASHER SAFE. Please note, these lids are not meant for canning; storage only. MADE IN GERMANY