Thickening agent for Smooth-On silicone rubber for vertical surface application (making brush-on molds). Different viscosities can be attained by varying the amount of THI-VEX™. THI-VEX™ is added as a small percentage of Part A and must be thoroughly mixed with Parts A and B.
NOTE: THI-VEX™ is not compatible with Mold Max™ 40, Mold Max™ 60, Ecoflex™ 00-30, Ecoflex™ 00-50, OOMOO™ or Mold Star™ 15 silicone rubbers.