3D Printing, Elastomers, Silicone COPSIL 3D 0550 REFORMULATED SILICONES. Soft RTV-2 silicone for additive manucfacturing. See Product Compare Quick View Add to Wishlist Product added! View Wishlist View Wishlist Show Information Materials: Elastomers Chemistry: Silicone Processes: 3D Printing Hardness: 5 ShA Mix viscosity at 20°C: Thixotrope Ratio: Silicone Type: RTV Packaging: KIT 6 x 50 ml