Kilner 6 Piece Rubber Seal Set for Clip Top Jar, 0.35 L, 0.5 L, 1 L, 1.5 L, and 2 L Made from natural rubber For Kilner round and square clip top jars Fit 0.35 L, 0.5 L, 1 L, 1.5 L, and 2 L jars Reusable up to 10 times; replace after canning highly acidic foods Hand wash