A modular element in elastic material for forming a sectional flooring includes a plurality of hollow cylindrical bodies (1) arranged in staggered rows so as to form a square grid, each cylinder (1) being connected to the adjacent cylinders by means of vertical ribs (2). The cylinders (1') arranged along two adjacent edges of the element are shorter than the other cylinders (1) with which they are aligned at the top, and have therein engaged in the lower portion connecting pegs (4), arranged along the two other edges of the element, the overall height of the assembled body formed of the peg (4) and of the external cylinder (1') being equal to the height of the other cylinders (1). A coupling is thus obtained between the various elements so as to form a continuous flooring wherein the seams are not visible.