Simpact 85A is a new Shore 85A urethane rubber from Smooth-On Inc. that has extraordinary tear strength as well as high impact and wear resistance. It is used for a variety of industrial and display applications. It is easy to color with tints or pigments. Simpact 85A offers a low-odor, low-shrink formulation that is free of phthalate, mercury and MOCA.
With a mix ratio of 85A to 100B by weight, components mix and pour easily. Working time is four minutes and handling time is two hours. To reach maximum physical properties, allow castings to cure for 48 hours at room temperature.