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Ecoflex™ 5

EpoxAcast™ 690 vs. Ecoflex™ 5 vs. TASK™ 14

Super-Soft, Addition Cure Silicone Rubber

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TASK™ 14

EpoxAcast™ 690 vs. Ecoflex™ 5 vs. TASK™ 14Ecoflex™ 5

Semi-Rigid Black Urethane Casting Resin

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EpoxAcast™ 690

EpoxAcast™ 690 vs. Ecoflex™ 5 vs. TASK™ 14Ecoflex™ 5 versus TASK™ 14

Optically Clear Casting Epoxy

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Epoxy Casting and Laminating Resins
Mixed Viscosity13,000 cps800 cps280 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)N/A (gram scale required)
Pot Life1 minute10 minutes5 hours
Cure Time5 minutes45 minutes24 hours
Shore D Hardness5080
Shore A Hardness5
ColorTranslucentBlackClear
Tensile Strength350 psi1,800 psi6,630 psi
Disclaimer
Although we do our best to ensure the accuracy of this Compare Tool, Smooth-On offers no warranty either expressed or implied as to the reliability of the information contained herein. Smooth-On assumes no liability for loss or damage associated with use of the Compare Tool. If this is a critical project, we encourage you to review all of the technical data below and contact our Technical Service department with any questions or concerns.

All Technical Data

Ecoflex™ 5TASK™ 14EpoxAcast™ 690
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Epoxy Casting and Laminating Resins
Mixed Viscosity13,000 cps800 cps280 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight1A:1B100A:120B100A:30B
Pot Life1 minute10 minutes5 hours
Cure Time5 minutes45 minutes24 hours
Shore D Hardness5080
Shore A Hardness5
Specific Gravity1.07 g/cc1.15 g/cc1.10 g/cc
Specific Volume25.8 cu. in./lb.24.1 cu. in./lb.25 cu. in./lb.
ColorTranslucentBlackClear
Die B Tear Strength75 pli
Tensile Strength350 psi1,800 psi6,630 psi
Tensile Modulus572,000 psi
Elongation @ Break1,000 %125 %
100% Modulus15 psi
Compressive Strength9,610 psi
Compressive Modulus91,300 psi
Flexural Strength10,980 psi
Flexural Modulus410,000 psi
Shrinkage<.001 in. / in.0.0035 in. / in.0.002 in. / in.
Heat Deflection Temp115 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)450 °F

Product Description

Ecoflex™ 5

Ecoflex™ rubbers are platinum-catalyzed silicones that are versatile and easy to use. Ecoflex™ rubbers are mixed 1A:1B by weight or volume and cured at room temperature with negligible shrinkage.  Low viscosity ensures easy mixing and de-airing. Dispense using our convenient dispensing cartridges. Cured rubber is very soft, very strong and very “stretchy”, stretching many times its original size without tearing and will rebound to its original form without distortion.

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TASK™ 14

TASK™ 14 is a fast setting two-component urethane that cures quickly to black semi-rigid plastic. TASK™ 14 offers a longer pot life (10 minutes) and demold time of 45 minutes.

With a Shore value of 50D, these semi-rigid plastics are used for a variety of industrial applications including fast mold making, fast model duplication, prototyping, durable miniatures, black props and special effects, or making parts that are impact resistant. Fully cured castings are tough, durable and chemical resistant.

For Best Results… Do not cast TASK™ 14 into platinum cure (addition cure) silicone molds.

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EpoxAcast™ 690

EpoxAcast™ 690 is a clear casting epoxy resin suitable for a variety of industrial and art-related projects requiring a rigid, clear finished casting. It is mixed 100A:30B by weight (gram scale required) and features a very low viscosity for easy mixing and minimal bubble entrapment. Working time is 5 hours and cure time is 24 hours at room temperature. Castings cure with negligible shrinkage and are very hard and strong. Resin can be colored with UVO™ or IGNITE™ colorants. This product is not moisture sensitive and can be used in humid environments. Recommended casting thickness maximum per layer is 3/8 in. / 0.95 cm.

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