Device for injection molding silicone rubber

A mold assembly for an injection molding system, the mold assembly comprising:

• a top portion, the top portion including one or more cassette alignment pins extending therefrom;
• a precision cassette plate, the cassette plate including one or more openings through the precision cassette plate in which parts are fabricated and secured, one or more pre-alignment through-holes which engage the one or more cassette alignment pins and configured to ensure accurate placement of the cassette, and two anti-rotational features, the precision cassette plate in combination with the two anti-rotational features is configured to hold and secure the fabricated parts formed therein in a particular orientation, the two anti-rotational features having different sizes and shapes and positioned along the perimeter of the precision cassette plate, extending through the precision cassette plate and configured to prevent rotational movement;
• a runner/gate insert element, the runner/gate insert element including a sprue channel and one or more runners and gates, the number of runners and gates equals the number of openings in the precision cassette plate;
• and
• a base portion, including an opening through which a nozzle of an injection molding system is positioned and makes contact with the sprue channel of the runner/gate insert element.