Mold the silicone is belong to the condensation silicone, it is by absorbing moisture in the air and curing, silica gel in the process of making the water boiled, without calling in just the right amount of moisture, can appear the phenomenon.Solution: this phenomenon does not belong to quality problems, but because there is no control moisture, improve the shelf life of silicone, long shelf life will appear some phenomenon, as long as in the use of silica gel, add 0.05% water, stir evenly can solve some conditions.