LH-727# , white 2% 0. 5H 2-4H 20-22 silicon rubber for PU resin, unsaturated resin, poly candle and gypsums crafts molding silicon rubber(silicon) and silicon are generally named as two-part room temperature sulfurated silicon rubberm, which features an exceptional fluidity and good operabitity, When mixed with 2%-3% curing agent, they can still be operated within 30 minutes, but will be formed after 2-3 hours. With resistance to deformation, high temperature, aid and alkali, and expansion, silicon flesible molds are used for mold duplication and delicate mold making for poli craft, resin crafts, lighting and candle crafts. For details inquiry: nancy underline x at 21cn dot com