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Ecoflex™ 5

EpoxAcoat™ RED vs. Ecoflex™ 5 vs. EpoxAcast™ 650 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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EpoxAcast™ 650 + 102 Hardener

EpoxAcoat™ RED vs. Ecoflex™ 5 vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5

Mineral Filled General Purpose Casting Epoxy

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps7,000 cpsLight Paste
Mix Ratio By Volume1A:1BN/A (gram scale required)5A:1B
Pot Life1 minute90 minutes20 minutes
Cure Time5 minutes4 hours16 hours
Barcol 935 Hardness9387
Shore D Hardness85
Shore A Hardness5
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.19.4 cu. in./lb.
ColorTranslucentOff WhiteRed
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 HardenerEpoxAcoat™ RED
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps7,000 cpsLight Paste
Mix Ratio By Volume1A:1B5A:1B
Mix Ratio By Weight1A:1B100A:13B100A:15B
Pot Life1 minute90 minutes20 minutes
Thin Film Working Time40 minutes
Thin Film Recoat Time60 minutes
Tack Free Time4 hours
Cure Time5 minutes4 hours16 hours
Barcol 935 Hardness9387
Shore D Hardness85
Shore A Hardness5
Specific Gravity1.07 g/cc1.52 g/cc1.43 g/cc
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.19.4 cu. in./lb.
ColorTranslucentOff WhiteRed
Die B Tear Strength75 pli
Tensile Strength350 psi
Tensile Modulus1,503,000 psi
Ultimate Tensile6,000 psi26,000 psi
Elongation @ Break1,000 %
100% Modulus15 psi
Compressive Strength16,350 psi24,000 psi
Compressive Modulus142,600 psi
Flexural Strength5,890 psi30,000 psi
Flexural Modulus710,000 psi
Shrinkage<.001 in. / in.0.001 in. / in.0.00015 in. / in.
Heat Deflection Temp129 °F133 °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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EpoxAcoat™ RED

EpoxAcoat™ RED, EpoxAcoat™ GREY and EpoxAcoat™ WHITE are thixotropic epoxy gel coats which are widely used for hand laminating and tooling applications. They are tough and strong surface coat resins which cure at room temperature and offer exceptional abrasion resistance. For high temperature applications (to 284°F / 140°C) use EpoxAcoat HT™ (see separate technical bulletin).

EpoxAcoat™ RED, EpoxAcoat™ GREY and EpoxAcoat™ WHITE are easy to use, wet out well over a variety of surfaces and will coat vertical surfaces without sagging. After the epoxy becomes “tacky-hard” at room temperature, fiberglass cloth is laminated behind the surface coat using Free Form™ AIR putty or EpoxAmite™ Laminating Epoxy to produce strong, lightweight tools that have excellent dimensional stability and surface finish. Cured surface machines precisely without chipping. Applications include precision tooling, master and pattern making, core boxes and fixtures.

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