Masontops Wide-Mouth Tough Top Canning Jar Lid (4-Count)

Tough Top lid turns any mason jar into an air-tight storage container. The underside of each durable, food-safe plastic lid has a custom gasket channel which holds the BPA-free silicone gasket in place at all times. 100% leak-proof. Dishwasher and freezer safe. Tough Tops are NOT intended for Canning. Do not heat or boil.