Resin Release is a non-silicon, non-PTFE coating designed to release plastic resin and wax models from rubber jewelry molds. A spray release agent that is applied to wax or resin patterns before they are vulcanized. Prevents your patterns from bonding to the rubber. Castaldo Resin Release is a soy-based product that is colorless, odorless, biodegradable, and safe. 12 oz aerosol spray can.