Polytek PT Flex 70 Fast-Curing, Pourable Polyurethane Casting Rubber

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Polytek PT Flex 70 Fast-Curing, Pourable Polyurethane Casting Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: PT Flex Liquid Rubbers are flexible, fast-curing rubbers, for use in prototyping and model making applications. They are excellent for casting decorative objects, production parts, tools, models, patterns, duplicate masters and more. With the addition of PolyColor Dyes, PT Flex products can be used to cast parts of any color. Product Line Features: Easy 1A:1B mix formulations Low viscosity Reproduces fine detail Low shrinkage on cure Rapid demold time Castable in large masses Information provided by Polytek
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Physical Properties	Metric	English	Comments

Specific Gravity	4.05 g/cc	4.05 g/cc
Viscosity	700 cP	700 cP	Mixed
Linear Mold Shrinkage	0.0046 cm/cm	0.0046 in/in	Upon Cure

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70
Tensile Strength	5.03 MPa	730 psi
Elongation at Break	175 %	175 %
Modulus of Elasticity	0.00631 GPa	0.915 ksi
Tear Strength	22.8 kN/m	130 pli	Die C Tear

Processing Properties	Metric	English	Comments
Cure Time	4.00 min	0.0667 hour	Pour Time
	120 min	2.00 hour	Demold Time

Descriptive Properties
Cured Color	Yellow/Amber
Mix Ratio By Weight	1A:1B
Specific Volume	26.4 in3/lb

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PPTK5050 / 251042

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