Polytek Poly-Fast 72-40 Flexible, Polyurethane Rubber

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Polytek Poly-Fast 72-40 Flexible, Polyurethane Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: Poly-Fast 72-40 Liquid Rubber consists of two parts (A and B) that, after mixing in the correct ratio, cure at room temperature to a versatile mold rubber. This liquid rubber may be poured or thickened and applied by trowel or brush, to make tough, flexible molds. These molds are useful for casting wax or plaster. Product Line Features: For sculptural applications and investment casting with wax Pour or brush-on with the addition of a liquid thickener Vary hardness with the addition of softener Good flow and bubble release resulting in reproduction of the finest details For long library life from cured molds, consider Poly 74-Series rubbers Information provided by Polytek
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Physical Properties	Original Value	Comments

Viscosity	4000 cP	Mixed

Mechanical Properties	Original Value	Comments
Hardness, Shore A	40

Processing Properties	Original Value	Comments
Cure Time	30.0 min	Pour Time

Descriptive Properties
Cured Color	Ivory
Mix Ratio By Weight	1A:10B
Specific Volume	20 in3/lb

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PPTK5062 / 251054

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