Hapco Hapflex 561 Flexible Urethane Elastomers

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Hapco Hapflex 561 Flexible Urethane Elastomers
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	The Hapflex 500 Series is distinguished by its high shock resistance and durability, making it ideal for molds or components that will endure the test of time. Many products in this series, excluding the 540/541 formulation, possess flame retardant properties and perform excellently in high or low temperatures. They are widely utilized for producing molds, parts, seals, and coatings. Information provided by Hapco, Inc.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.06 g/cc	1.06 g/cc	ASTM D-4669
Viscosity	2250 cP	2250 cP	ASTM D-4878
Linear Mold Shrinkage	0.0020 - 0.0040 cm/cm	0.0020 - 0.0040 in/in	ASTM D-2566

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	65	65	ASTM D-2240
Tensile Strength	8.96 MPa	1300 psi	ASTM D-638
Elongation at Break	600 %	600 %	ASTM D-638
Modulus of Elasticity	0.00296 GPa	0.430 ksi	ASTM D-638
Izod Impact, Notched	NB	NB	ASTM D-256
Izod Impact, Unnotched	NB	NB	ASTM D-256

Processing Properties	Metric	English	Comments
Cure Time	960 - 1440 min @Thickness 3.17 mm	16.0 - 24.0 hour @Thickness 0.125 in	Demold
Gel Time	45.0 min @Load 0.100 kg	45.0 min @Load 0.221 lb	ASTM D-2971

Descriptive Properties
Color (cured)	Clear Amber
Mix Ratio	100:50		Volume
	100:55		Weight

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PHAPCO072 / 317131

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