RTV-2 molding silicone rubber and silicon are generally named as tow-part room temperature sulfreted silicone rubber,which features an exceptional fluidity and good operability.when mixed with 2%-3%curing agent,they can still be operated within 30minutes,but will be formed after 2-3hours.With resistance to deformation,high temperature,acid and alkali,and expeansion ,silicon flexible molds are used for mold duplication and delicate mold making for poli crafts,resin crafts,lighting and candle crafts.