Tech Specs
Thixotropic plastic that self thickens when mixed and can be brushed onto a variety of surfaces or into rubber molds. Shell Shock™ is ideal for making fast, lightweight rigid molds for creating silicone appliances and effects (use as a replacement for gypsum molds). You can also brush a "gel coat" into a rubber mold and back it up with rigid foam, creating a highly detailed lightweight casting.
Additional Information
SDS
https://www.smooth-on.com/msds/files/419A_1_419B_1.pdf
Specs
https://www.smooth-on.com/tb/files/Shell_Shock_TB.pdf