Use for Mold making applications like Fiber Casting, Pattern Making, Shoe Molding, Gypsum Board manufacturing, Cement & POP Molding, Candles Making , Statue/Idol Making, Soap making Two-part silicon rubber: flowable liquid silicon and curing agent.Fast curing. Cures at room temperature within 8-12 hours.An exceptional fluidity and good operability, easy to demold.Good tensile and tear strength, low shrinkage. MIX RATIO: 3-5% of catalyst, For instant setting use 5% . For medium fast setting use 3%.BY WEIGHT: Easy to use silicone rubber compound features a convenient mixing ratio by weight. Use weighing machine for proper measurement and to avoid mistakes.SHORE A HARDNESS: 25 A - This scale measures the hardness of flexible rubber molds. A 25 A hardness is in the medium soft range in molding grade.LOW VISCOSITY: You can easily mix and pour this rubber compound, creating one-block or two-block pieces or replicas with no vacuum degassing required.PERFECT FOR ART AND INDUSTRIAL APPLICATIONS Often used for molds to reproduce sculptures and other prototypes, casting plaster, POP, resins, and wax FAST POT LIFE AND CURE TIME It takes no more than 1 hour for this compound to cure at room temperature if 5% catalyst used , with no noticeable shrinkage, and a 3-hour cure time if 3% catalyst used . For maximum results, store the products at room temperature!