Abstract: A process for hermetically sealing a glass container with contents therein is disclosed. The container has a mouth surrounded by a rim, at least a portion of the exterior surface, including the rim, of the container having a film coating of thermoplastic polymer thereon. The first step in sealing comprises substantially reducing the amount of contents' residue from the container rim. A closure is then applied to the rim. This closure is comprised of a layered material, having a thermoplastic polymer layer and a metallic layer, the thermoplastic layer contacting the thermoplastic polymer coating on the container rim. The thermoplastic polymer layer and the thermoplastic polymer coating consist essentially of mutually compatible polymeric materials. The closure is then heated in contact with the rim, to heat seal the closure to the rim coating and to seal the contents hermetically within the glass container.