PT Flex 20 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a tan, Shore A20 rubber. This is the softest rubber in the PT Flex line of polyurethane mold rubbers. PT Flex Series rubbers were specifically designed for prototyping and model making applications and offer fast pour times (~4 minutes) and fast demold times (~2 hours).
Unlike many other Polytek® polyurethane rubber products, these castable rubbers are low in viscosity and are fast-setting so they can be demolded rapidly.
PT Flex rubbers can be cast in PlatSil® silicone molds without any release agent and can be cast in polyurethane rubber molds, polyurethane plastic molds and latex molds with the proper release agent (e.g., Pol-Ease® 2300 Release Agent).
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