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Ensinger PEI

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Reynolds Clear Flex® 50 Water Clear Urethane Rubber
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Liquid

Material Notes: Product Overview: Clear Flex™ 50 and Clear Flex™ 95 are water white clear urethane liquid rubber compounds designed for applications that require absolute clarity and resistance to sunlight. Low viscosity ensures easy mixing and pouring. Clear Flex™ 50 and 95 cure at room temperature with negligible shrinkage. Cured castings are clear, flexible and UV Resistant. Vibrant colors and color effects are achieved by adding pigments. Applications include making clear-cut molds, model reproductions, decorative cast pieces, special effects, prototype parts.

Information provided by Reynolds Advanced Materials

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.04 g/ccASTM D-1475
Viscosity 250 cPMixed; ASTM D-2393
Linear Mold Shrinkage 0.0015 in/in
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 50ASTM D-2240
Tensile Strength 250 psiASTM D-412
Elongation at Break 500 %ASTM D-412
Tear Strength 25.0 pliDie C; ASTM D-624
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 6.014e+15 ohm-cmASTM D-150-98
Surface Resistance >= 7.646e+13 ohmASTM D-150-98
Dielectric Constant 6.62
@Frequency 100 Hz
ASTM D-150-98
Dielectric Strength 474 V/milASTM D-147-97a
Dissipation Factor 0.103
@Frequency 100 Hz
ASTM D-150-98
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.486
@Temperature 25.0 °C
 1.488
@Temperature 20.0 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 16.0 hour
Pot Life 25.0 minASTM D-2471
 
Descriptive Properties
ColorClear
Mix Ratio1A:2Bby weight
Specific Volume26.8[cu. in./lb.]

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PREYN092 / 296793

Proto3000 – 3D Engineering Solutions

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