Weck Sealing Ring- Large

Weck Sealing Rings are used when creating an airtight seal on your Weck jars.  They can be used to keep your dry goods fresh and for canning.  If used for canning, they should be replaced each time.  

Large Fits: 100mm
740,741,742, & 743 Mold
738, 739, 744, & 745 Tulip
748 Deco
974 Cylindrical