Rebound 25900 grams Rebound 25 is an easy to use platinum cure silicone rubber which self thickens for making brush on moulds of almost any model. Mixed 1A: 1B by volume (no scale necessary), Rebound rubber can be applied with a brush or spatula to vertical surfaces without sagging and will cure with negligible shrinkage to a flexible rubber. Features Rebound 25 is soft, flexible and is good for making moulds of models with deep undercuts. Depending on model