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Ecoflex™ 5

Ecoflex™ 5 vs. TASK™ 15 vs. EpoxAcast™ 650 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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EpoxAcast™ 650 + 102 Hardener

Ecoflex™ 5 vs. TASK™ 15 vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5

Mineral Filled General Purpose Casting Epoxy

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TASK™ 15

Ecoflex™ 5 vs. TASK™ 15 vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 650 + 102 Hardener

Roto Casting, Impact Resistant Performance Resin

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Resins
Mixed Viscosity13,000 cps7,000 cps600 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)N/A (gram scale required)
Pot Life1 minute90 minutes6 minutes
Cure Time5 minutes4 hours1 hour
Barcol 935 Hardness93
Shore D Hardness75
Shore A Hardness5
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.24.7 cu. in./lb.
ColorTranslucentOff WhiteOpaque White
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™ 5EpoxAcast™ 650 + 102 HardenerTASK™ 15
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Resins
Mixed Viscosity13,000 cps7,000 cps600 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight1A:1B100A:13B75A:100B
Pot Life1 minute90 minutes6 minutes
Cure Time5 minutes4 hours1 hour
Barcol 935 Hardness93
Shore D Hardness75
Shore A Hardness5
Specific Gravity1.07 g/cc1.52 g/cc1.12 g/cc
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.24.7 cu. in./lb.
ColorTranslucentOff WhiteOpaque White
Die B Tear Strength75 pli
Tensile Strength350 psi2,720 psi
Tensile Modulus1,503,000 psi126,000 psi
Ultimate Tensile6,000 psi
Elongation @ Break1,000 %20 %
100% Modulus15 psi
Compressive Strength16,350 psi5,450 psi
Compressive Modulus142,600 psi60,000 psi
Flexural Strength5,890 psi
Flexural Modulus710,000 psi170,000 psi
Shrinkage<.001 in. / in.0.001 in. / in.0.0042 in. / in.
Heat Deflection Temp129 °F117 °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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EpoxAcast™ 650 + 102 Hardener

EpoxAcast™ 650 is a mineral filled general purpose casting epoxy that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment.

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TASK™ 15

TASK™ 15 is a premium performance urethane resin that has very high impact strength, even when cast in thin-wall sections. Pot life is 6 minutes and handling time 60 minutes at room temperature. Resin cures with negligible shrinkage.

Vibrant colors are possible by adding small amounts of SO-Strong™ tint, UVO pigments or IGNITE™ fluorescent colors.

Plastic fully cures with negligible shrinkage and can be machined, sanded and/or painted. TASK™ 15 features a gradual cure profile, making it ideal for rotational casting applications (making hollow parts).

Applications include making very tough prototype parts and limited run production castings as well as rotationally cast parts such as mannequins.

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