Very easy to use with 1:1 mixing ratio Reproduce very fine details with ease Medium 30A Shore Hardness Long Working Time - 30mins Our Medium Silicone Rubber is great for most moulding and casting applications, it’s both soft but firm enough to maintain its structure which is great for most casting applications. It also works well for moulding where a solid structure is required. Mixing Mixing Ratio: 1:1 by weight Cures at room temperature (23 degrees C) Working/Mixing time of 30-40mins Sets/cures in 8-10 hours (depends on temperature, warmer = quicker) Specifications Platinum Cured Silicone Colour – Translucent High tear strength Temperature Resistant (-60 – 120 degrees Celsius) Skin Safe/Food grade (odourless and non-toxic) Nil Shrinkage Rate (0.1%) Cured Density – 1.12 g/cm3 Shore Hardness – 30A