a sealing arrangement for a plastic bottle includes a blow - molded bottle having a body and a mouth that includes an opening , an injection molded neck that includes a continuous wall that defines a top wall - opening and a bottom wall - opening . the top wall - opening provides a pour spout for liquid contained within the body of the bottle . the bottom wall - opening is fused to the mouth of the bottle so as to surround the bottle &# 39 ; s opening . a removable flange is located generally within the bottom wall - opening and a frangible region connects the flange to the wall . a foil is secured to a side of the flange that is generally adjacent to the bottom wall - opening , and the foil is adapted to close the bottom wall - opening . a plurality of foil - cutting teeth are carried by the wall generally adjacent to the bottom wall - opening , generally adjacent to the side of the flange and generally adjacent to the foil . a pull member is secured to the flange . manual operation of the pull member separates the flange from the wall , as at least a portion of the foil is cut by the teeth . an injection - molded cap removably closes the top wall - opening . the wall includes a weakened portion that will break upon an attempt to physically remove the wall from the bottle . the cap includes a cover plate that covers the top wall - opening and a skirt that extends from the cover plate to cover the weakened portion of the wall .