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Ecoflex™ 5

Ecoflex™ 5 vs. TASK™ 14 vs. Feather Lite™

Super-Soft, Addition Cure Silicone Rubber

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TASK™ 14

Ecoflex™ 5 vs. TASK™ 14 vs. Feather Lite™Ecoflex™ 5

Semi-Rigid Black Urethane Casting Resin

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Feather Lite™

Ecoflex™ 5 vs. TASK™ 14 vs. Feather Lite™Ecoflex™ 5 versus TASK™ 14

Lightweight Urethane Resin

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps410 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute10 minutes8.5 minutes
Cure Time5 minutes45 minutes2 hours
Shore D Hardness5058
Shore A Hardness5
Specific Volume25.8 cu. in./lb.24.1 cu. in./lb.41.3 cu. in./lb.
ColorTranslucentBlackBeige
Elongation @ Break1,000 %125 %1.6 %
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™ 14Feather Lite™
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps410 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:120B
Pot Life1 minute10 minutes8.5 minutes
Cure Time5 minutes45 minutes2 hours
Shore D Hardness5058
Shore A Hardness5
Specific Gravity1.07 g/cc1.15 g/cc0.67 g/cc
Specific Volume25.8 cu. in./lb.24.1 cu. in./lb.41.3 cu. in./lb.
ColorTranslucentBlackBeige
Die B Tear Strength75 pli
Tensile Strength350 psi1,800 psi
Tensile Modulus156,000 psi
Ultimate Tensile2,160 psi
Elongation @ Break1,000 %125 %1.6 %
100% Modulus15 psi
Compressive Strength3,070 psi
Compressive Modulus53,700 psi
Flexural Strength3,440 psi
Flexural Modulus164,300 psi
Shrinkage<.001 in. / in.0.0035 in. / in.0.003 in. / in.
Heat Deflection Temp140 °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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Feather Lite™

Feather Lite™ is a heavily filled low-density urethane casting resin. Cured plastic is lightweight (it floats in water!) and has a much lower density than other casting resins.

Feather Lite™ features a convenient 1A:1B by volume mix ratio and mixes easily (pre-mixing of parts A & B is necessary). Cured plastic is strong and can be carved, machined, drilled, sanded, etc. Feather Lite™ can be pigmented with SO-Strong™ color tints prior to casting and finished castings can be painted. And because this product is low-density, it yields more plastic per pound/kg. than other casting resins, the cost per casting is low. Feather Lite™ can be used for a variety of art or industrial design related applications including reproducing sculpture, making fishing lures, prototype model making, casting doll heads and figures, etc.

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