![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-flat-copper-storage-lid-inserts-rm-wm.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-copper-flat-storage-lid-insert-and-band-wide-mouth-ball-mason-pint-jar-pretzels_0e4a6194-446b-42f8-ab15-6360f9f10205.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-copper-flat-storage-lid-insert-with-stainless-steel-band-regular-mouth-mason-jar.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-copper-flat-storage-lid-insert-and-band-regular-mouth-kerr-mason-pint-jar-coffee-beans.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-copper-flat-storage-lid-insert-and-copper-band-regular-mouth-mason-jar_9e7414f3-b10f-4abb-979c-f27f15be6216.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-flat-copper-storage-lid-inserts-front-back-wm.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/mason-jar-lifestyle-flat-copper-storage-lid-inserts-front-back-rm.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/IMG_4290.jpg?v=1738865076)
![Copper Flat Storage Lid Inserts for Mason Jars](http://foodvacbags.com/cdn/shop/files/IMG_4279.jpg?v=1738865076)
Copper Flat Storage Lid Inserts for Mason Jars
Hand Wash - To avoid damaging the copper electroplated coating and shortening the life of the plastisol.
Our factory says they would be good for water bath or pressure canning, but we haven't had them officially tested.