A closure seal or tamper evident pressure sensitive label of a sandwich construction for use at the opening seam of packaging to be sealed to indicate whether the package has been opened or otherwise tampered with. The label includes a facer material, a liner material and a pressure sensitive adhesive therebetween. The facer material has cut out a lower label section joined to an upper pull tab section with adjacent tab wings. The upper pull tab section has a liner material portion cut out to adhere to a back or under side of the upper tab section upon pulling the label off the liner material for use. The lower label section and wings has exposed adhesive upon the label being pulled off the liner material for use. Once the label is placed on the packaging, the lower label section and the upper pull tab with adjacent tab wings are aligned to straddle the opening seam of the packaging. The tab maybe pulled away from the label and torn away from the wings while remaining intact with the lower label section to evidence the package has been opened or otherwise tampered with. The label is manufactured by a flexo-graphic web method.