... the bottle One-time use 5 Gallon plastic bottle cap plastic bottle cap , plastic water bottle caps , 5 gallon water ... inside is smooth, without apparent shrinkage, bubble, flash and defectcolorcolor equablypollutionno dust, no plastic scrap or other impurities, no obvious ... error is not more than 2mmHeat sealingheat sealing evenly, level off, without apparent ruffle, become warped edge, Stick ...