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Ecoflex™ 5

Ecoflex™ 5 vs. Simpact™ 60A vs. EpoxAcast™ 650 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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EpoxAcast™ 650 + 102 Hardener

Ecoflex™ 5 vs. Simpact™ 60A vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5

Mineral Filled General Purpose Casting Epoxy

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Simpact™ 60A

Ecoflex™ 5 vs. Simpact™ 60A vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 650 + 102 Hardener

Tough, Fast Setting Urethane

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
  • Urethane Resins
Mixed Viscosity13,000 cps7,000 cps1,100 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute90 minutes4 minutes
Cure Time5 minutes4 hours48 hours
Barcol 935 Hardness93
Shore A Hardness560
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.25.7 cu. in./lb.
ColorTranslucentOff WhiteWhite
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 HardenerSimpact™ 60A
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
  • Urethane Resins
Mixed Viscosity13,000 cps7,000 cps1,100 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:13B100A:94B
Pot Life1 minute90 minutes4 minutes
Handling Time2 hours
Cure Time5 minutes4 hours48 hours
Barcol 935 Hardness93
Shore A Hardness560
Specific Gravity1.07 g/cc1.52 g/cc1.08 g/cc
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.25.7 cu. in./lb.
ColorTranslucentOff WhiteWhite
Die B Tear Strength75 pli
Die C Tear Strength142 pli
Tensile Strength350 psi990 psi
Tensile Modulus1,503,000 psi
Ultimate Tensile6,000 psi
Elongation @ Break1,000 %400 %
100% Modulus15 psi312 psi
Compressive Strength16,350 psi
Compressive Modulus142,600 psi
Flexural Strength5,890 psi
Flexural Modulus710,000 psi
Shrinkage<.001 in. / in.0.001 in. / in.<.007 in. / in.
Heat Deflection Temp129 °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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Simpact™ 60A

Simpact™ 60A urethane is a low odor, fast-setting urethane elastomers 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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