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Ecoflex™ 5

Ecoflex™ 5 vs. Simpact™ 85A vs. TASK™ 14

Super-Soft, Addition Cure Silicone Rubber

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TASK™ 14

Ecoflex™ 5 vs. Simpact™ 85A vs. TASK™ 14Ecoflex™ 5

Semi-Rigid Black Urethane Casting Resin

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Simpact™ 85A

Ecoflex™ 5 vs. Simpact™ 85A vs. TASK™ 14Ecoflex™ 5 versus TASK™ 14

Tough, Fast Setting Urethane

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Rubber
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps1,100 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)N/A (gram scale required)
Pot Life1 minute10 minutes4 minutes
Cure Time5 minutes45 minutes48 hours
Shore D Hardness50
Shore A Hardness585
ColorTranslucentBlackOff White
Tensile Strength350 psi1,800 psi1,573 psi
Elongation @ Break1,000 %125 %164 %
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™ 14Simpact™ 85A
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Rubber
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps1,100 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight1A:1B100A:120B85A:100B
Pot Life1 minute10 minutes4 minutes
Handling Time2 hours
Cure Time5 minutes45 minutes48 hours
Shore D Hardness50
Shore A Hardness585
Specific Gravity1.07 g/cc1.15 g/cc1.09 g/cc
Specific Volume25.8 cu. in./lb.24.1 cu. in./lb.25.4 cu. in./lb.
ColorTranslucentBlackOff White
Die B Tear Strength75 pli
Die C Tear Strength182 pli
Tensile Strength350 psi1,800 psi1,573 psi
Elongation @ Break1,000 %125 %164 %
100% Modulus15 psi1,213 psi
Shrinkage<.001 in. / in.0.0035 in. / in.<.007 in. / in.
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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Simpact™ 85A

Simpact™ 85A urethane is a low odor, fast-setting urethane elastomer which offers very high tear strength, impact resistance and wear resistance. Simpact™ urethanes are phthalate free, mercury free and MOCA free. Simpact™ urethanes pour easily. Working time is 4 minutes, handling time is 2 hours and full cure time is 48 hours at room temperature.

Cured rubber has exceptional performance characteristics and dimensional stability. Simpact™ urethanes can be colored with SO-Strong™ or Ignite™ colorants. Simpact™ urethanes are suitable for making impact resistant props, prototypes and display pieces.

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