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Ecoflex™ 5

Ecoflex™ 5 vs. Crystal Clear™ 220 vs. TASK™ 14

Super-Soft, Addition Cure Silicone Rubber

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TASK™ 14

Ecoflex™ 5 vs. Crystal Clear™ 220 vs. TASK™ 14Ecoflex™ 5

Semi-Rigid Black Urethane Casting Resin

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Crystal Clear™ 220

Ecoflex™ 5 vs. Crystal Clear™ 220 vs. TASK™ 14Ecoflex™ 5 versus TASK™ 14

Clear Urethane Casting Resin

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps675 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)N/A (gram scale required)
Pot Life1 minute10 minutes22 minutes
Shore D Hardness5085
Shore A Hardness5
ColorTranslucentBlackClear
Elongation @ Break1,000 %125 %12 %
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™ 14Crystal Clear™ 220
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps800 cps675 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight1A:1B100A:120B100A:75B
Pot Life1 minute10 minutes22 minutes
Cure Time5 minutes45 minutes

Overnight Followed By Post Cure

Shore D Hardness5085
Shore A Hardness5
Specific Gravity1.07 g/cc1.15 g/cc1.07 g/cc
Specific Volume25.8 cu. in./lb.24.1 cu. in./lb.25.9 cu. in./lb.
ColorTranslucentBlackClear
Die B Tear Strength75 pli
Tensile Strength350 psi1,800 psi
Ultimate Tensile8,190 psi
Elongation @ Break1,000 %125 %12 %
100% Modulus15 psi
Compressive Strength10,100 psi
Compressive Modulus87,000 psi
Flexural Strength11,400 psi
Flexural Modulus305,000 psi
Shrinkage<.001 in. / in.0.0035 in. / in.0.0173 in. / in.
Heat Deflection Temp176 °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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Crystal Clear™ 220

Crystal Clear™ 220 is a water white clear resin made specifically for applications that require absolute clarity. This is a “heat cure” system and is a harder version of our popular Crystal Clear™ Series resins (Shore 85D).  Crystal Clear™ 220 has been certified for use as a lens material for DOT and FAA applications.

CAUTION: NOT FOR HOME USE. THIS PRODUCT IS FOR INDUSTRIAL USE ONLY. With adequate local exhaust ventilation, respiratory protection is not normally required when using this product. Where risk assessment shows air-purifying respirators are appropriate, follow OSHA respirator regulations and European Standards EN 141, 143 and 371. Protective clothing (gloves and long sleeves) is required to minimize the risk of dermal sensitization. If breathing is affected or a dermal rash develops, immediately cease using this product and seek medical attention. Read SDS before using.

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