Abstract: A mold structure, especially a multi-cavity mold, and more particularly still, a mold structure in which rubber-like elements and the like can be molded with a minimum of flash. The mold structure is formed of multiple plates moveably connected together having mounted therein the cavity forming insert elements. The upper plate includes a chamber on top which receives the material to be molded and which material is transferred by a ram member from the chamber through suitable sprues in the insert elements in the top plate into the mold cavities which are to be filled. The mold cavities are formed by insert elements detachably mounted in the several plates making up the mold structure and include insert elements interposed between the chamber which receives the raw molding material and the cavities and which last mentioned insert elements are flexibly connected with the respective plate.