by Weck (Various sizes)
This is a snap-on lid to use on a Weck jar whose contents need refrigerating (e.g. jar has been opened but contents will be consumed in more than one sitting). Not suitable for canning. If using in the freezer (e.g. for freezer jam), the lid will expand along with the food in the freezing process, preventing the glass jar from breaking under pressure.
Small size fits the following Weck Jars: Mold 80 ml, Tulip 220 ml, Cylindrical 250 ml, Deco 250 ml.
Medium size fits the following Weck Jars: Mold 165 ml, Tall Mold 165 ml, Deco 500 ml, Cylindrical 1L.
Large size fits the following Weck Jars: Mold 290 ml, Mold 500 ml, Deco 1L, Cylindrical 1.5L, Tulip 500 ml, Tulip 1L, Tulip 2.5L.