... and no defects.Seal cuttingAfter cutting ,the single stick labels edge is smooth, no flash and silk glue. After cutting, ... sealing evenly, level off, without apparent ruffle, become warped edge, Stick label and 5 Gallon caps heat sealing are strength ... stabilityA, resistance to low temperature,the label not appear warped edge,roll edge and loose.B. resistance to high-temperature,the label not ...