50 extends slightly above the upper edge of the inside and outside walls 51 and 52 to assure a tight seal and provide a cushion affect thus when the cover 15 is placed on the dish portion 40 the cover 15 is rotated to initially engage the cover thread 61 with the body thread 60 and further rotated until the seal 50 is engaged and forced down into its supporting seat 49 this causes the mating threads 60 and 61 to tightly engage one another and seal 50 to tightly engage the inside wall 21 of the cover 15 when rotation of the cover upon the dish portion 40 becomes difficult the frictional engagement of the cover with the body is sufficient to enable the entire container to be carried by its handle 25 without fear of disengagement of the cover from the dish portion this engagement also effectively seals the interior of the container from the surroundings to prevent thermal and fluid leakage or loss of course any other suitable means of sealing the cover interface with the dish portion may be used the dish portion of the food container while having rounded corners 41 has a substantially flat base or bottom 44 thus the container as.