Low viscosity MasterSil 152 is a two component, optically clear silicone system that cures when exposed to air at room temperature. It has outstanding electrical insulation properties, making it ideal for potting and encapsulation applications. Additionally it features a long working life and has a low exotherm. Serviceability is from -65°F to +400°F. This highly flexible compound has a Shore A hardness of 25-35.