A container assembly

A container assembly comprising a body and a cover (1) which cover comprises a cover rim (5) having a substantially inverted U-shape defining an outer flange (6) and an inner flange (7) separated by a top section (8), a lower part of said outer flange (6) terminating in an end, which body comprises a body rim (4) being defined by an upstanding inner wall (11) and an upstanding outer wall (13), which outer wall being joined to said inner wall by a top wall (12), a lower portion of said outer wall terminating in a gutter (14), said outer wall comprises a recess (15) and said outer flange comprises a protrusion (10) in such a manner as to enable a fitting of said protrusion into said recess, said end being provided for engaging said gutter, said outer flange comprises a tab (16) which extends substantially parallel to said top section, said tab being arranged at said lower part of said outer flange, said outer flange having weakening lines (17) so that by applying a pulling force to said tab, a tear out of a section of said outer flange occurs.