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Ecoflex™ 5

Ecoflex™ 5 vs. EA-40® vs. EpoxAcast™ 650 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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EpoxAcast™ 650 + 102 Hardener

Ecoflex™ 5 vs. EA-40® vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5

Mineral Filled General Purpose Casting Epoxy

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EA-40®

Ecoflex™ 5 vs. EA-40® vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 650 + 102 Hardener

Epoxy Adhesive and Laminating Resin

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Adhesives
Mixed Viscosity13,000 cps7,000 cpsLight Paste
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute90 minutes2 hours
Cure Time5 minutes4 hours24 hours
Barcol 935 Hardness9366
Shore A Hardness5
Specific Gravity1.07 g/cc1.52 g/cc1.10 g/cc
ColorTranslucentOff WhiteClear Amber
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 HardenerEA-40®
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Adhesives
Mixed Viscosity13,000 cps7,000 cpsLight Paste
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:13B1A:1B
Pot Life1 minute90 minutes2 hours
Cure Time5 minutes4 hours24 hours
Barcol 935 Hardness9366
Shore A Hardness5
Specific Gravity1.07 g/cc1.52 g/cc1.10 g/cc
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.
ColorTranslucentOff WhiteClear Amber
Die B Tear Strength75 pli
Tensile Strength350 psi3,400 psi
Tensile Modulus1,503,000 psi
Ultimate Tensile6,000 psi
Elongation @ Break1,000 %1.0 %
100% Modulus15 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.
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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EA-40®

EA-40® Clear Amber Epoxy is an unfilled low-viscosity epoxy adhesive that can be spread easily in thin films that are almost transparent after curing. EA-40® has a long pot life and cures in 24 hours at room temperature to provide good mechanical and electrical properties. Mix ratio is 1:1 by volume. When mixed 2A:1B by volume, EA-40® will achieve greater heat resistance and improved physical properties. EA-40® is versatile and can be used for many different assembly and repair applications ranging from electrical potting to jewelry assembly to repairing plumbing fixtures. Bow makers have come to know EA-40® as a tremendous laminating resin. EA-40® provides highly moisture resistant bonds meeting the performance requirements for Federal Specification MMM-A-188, Type III.

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