Abstract: A filling or packing body has an annular cell structure. All walls surrounding each cell are normal to the main plane along which the annular structure extends. Dividing walls between the cells transverse to an outer wall closed upon itself are parallel with each other at least for a row of adjacent cells or for all of them. The ring constituted by the row of cells having the outer wall in common can be of round, in particular of circular or elliptic configuration, or its configuration can be polygonal, especially triangular. The height of the cell walls, normal to the main plane, can be constant or it can be higher at the center than at the periphery of the ring structure.