Diamond D Ultra Impact Acrylic, 1 quart Heat Cure Monomer. Type: Heat Cure, Liquid, 1 Quart. For advanced, natural-looking dentures. With superior handling and working features. High-impact, flexular strength. Diamond D HC Liquid Monomer is a revolutionary resin characterized by its unique working and handling features ideal for anatomic sculpting. This acrylic creates high-impact, natural-looking dentures through its precise translucency and color shading comparable to natural tissue.