Smooth-On Silicone Mold Making， Liquid Rubber OOMOO 30， Easy to Use - Trial Size 2.8 lb</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>MIX RATIO: 1A:1B BY VOLUME - Easy to use silicone rubber compound features a convenient one-to-one by volume mix ratio， no scale is necessary</li><li>SHORE A HARDNESS: 30 - This scale measures the hardness of flexible rubber molds. A 30A hardness is in the soft to medium soft range， between the flexibility of a rubber band and pencil eraser</li><li>POT LIFE: 30 MINUTES， CURE TIME: 6 HOURS - This product cures at room temperature with negligible shrinkage. Best to store at room temperature， see "For Best Results" section below</li><li>LOW VISCOSITY FOR EASY MIXING AND POURING - Great for making simple one- or two-piece block molds， no vacuum degassing is necessary</li><li>PERFECT FOR ART AND INDUSTRIAL APPLICATIONS - Often used for molds to reproduce sculptures and other prototypes， casting plaster， resins， and wax</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51cFiA-qZzL.jpg' noproxy></br>