Cascade - Orthotic & Prosthetic Supplier

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Smooth-On SO-Strong®


SO-Strong® liquid urethane colorants can be added to any Smooth-On liquid urethane rubber, urethane plastic or urethane foam (do not use with Smooth-On silicones). They can be used to create a variety of color effects for a wide range of material applications. For glowing fluorescent color effects, use Ignite® colorants.

  • SO-Strong® colorants are highly concentrated, offer excellent dispersion and consistent color
  • A very small amount will color a proportionally large amount of liquid urethane material
  • The more you add in proportion to the volume of liquid urethane, the more dramatic the color effect
  • Recommended loading range is .01% to 3% of total system weight
  • Do not overload the liquid urethane system or cure inhibition / oozing may occur
  • User determines amount to add; If this is your first time adding color tint or pigment to a urethane system, you may want to test the color effect by adding a few drops to a small amount of urethane material and observe the outcome
  • It may take a few test castings to attain the desired color outcome
  • Color Tints: Black, Yellow, Brown, Purple, Green, Orange, Red and Blue
  • Color Pigments: White and Fleshtone

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