... no water leak out Appearance conforms with these requirments: itemstandardproduct surfaceproduct should be full,competely structure, surface and inside is smooth, without ... is not more than 2mmHeat sealingheat sealing evenly, level off, without apparent ruffle, become warped edge, Stick label and 5 Gallon ... not appear warped edge,roll edge and loose. no spill&5gallon plastic water bottle cap