Weck Keep Fresh covers are BPA free and are suitable for storing opened jars of preserves in the fridge or when storing food in the freezer. As the lids expand slightly, there is a lower chance of glass breakage when food expands as it freezes.
The plastic covers also convert your jars into very handy storage containers. Used to store herbs and spices, reorganise your pantry or carry juice in one of the stylish juice bottles. The lids are made of flexible BPA free plastic and snap onto the jar. They are airtight but do not have any sort of seal with them.
Lids come in 5 sizes: extra small, small, medium, large and extra large. Extra Small = 40mm Small = 60mm/ 2 3/8", Medium = 80mm / 3 1/8", Large = 100mm / 3 7/8 " Extra Large = 120mm. Check your jar to see which size yours is.
Extra large suits model 750.
