Reynolds ReoFlex® 50 Liquid Urethane Rubbers

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Reynolds ReoFlex® 50 Liquid Urethane Rubbers
Categories:	Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Liquid
Material Notes:	Product Overview: ReoFlex™ urethane rubbers offer superior physical and performance properties for production casting of wax, plasters, and resins. ReoFlex™ urethanes are available in 20A, 30A, 40A, 50A and 60A Shore hardnesses and feature convenient one-to-one by volume mix ratios. Vacuum degassing is not necessary and ReoFlex™ rubbers cure with negligible shrinkage to a durable rubber that will last in production. ReoFlex™ “Wet” rubbers will shrink somewhat over time vs. “Dry” formulations. ReoFlex™ mold rubbers are used for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. Vibrant colors can be achieved by adding So-Strong™ Color Tints, available from Smooth-On. Casting Concrete? Look into the VytaFlex™ series of urethane mold rubbers. VytaFlex™ urethanes were formulated specifically for casting concrete / pigmented concrete and feature Smooth-On’s exclusive ‘V-Polymer™’ technology. Information provided by Reynolds Advanced Materials
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Physical Properties	Original Value	Comments

Specific Gravity	1.01 g/cc	ASTM D-1475
Viscosity	2000 cP	Mixed; ASTM D-2393
Linear Mold Shrinkage	<= 0.0010 in/in

Mechanical Properties	Original Value	Comments
Hardness, Shore A	50	ASTM D-2240
Tensile Strength	580 psi	ASTM D-412
Elongation at Break	435 %	ASTM D-412
100% Modulus	152 psi	ASTM D-412
Tear Strength	120 pli	Die C; ASTM D-624

Processing Properties	Original Value	Comments
Cure Time	16.0 hour	Overnight
Pot Life	50.0 min	ASTM D-2471

Descriptive Properties
Color	Off-White
Mix Ratio	1A:1B	by volume
	1A:1B	by weight
Specific Volume	27.4	[cu. in./lb.]

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PREYN071 / 296772

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