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Ecoflex™ 5

Ecoflex™ 5 vs. EpoxAcast™ 655 + 102 Hardener vs. Free Form™ Habitat™ Flex FR

Super-Soft, Addition Cure Silicone Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy Putties
Mixed Viscosity13,000 cps23,000 cpsDough
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute75 minutes90 minutes
Cure Time5 minutes9 hours24 hours
Shore D Hardness90
Shore A Hardness590
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.17.9 cu. in./lb.
ColorTranslucentGreyLight Brown
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™ 655 + 102 HardenerFree Form™ Habitat™ Flex FR
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy Putties
Mixed Viscosity13,000 cps23,000 cpsDough
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:11B1A:1B
Pot Life1 minute75 minutes90 minutes
Cure Time5 minutes9 hours24 hours
Shore D Hardness90
Shore A Hardness590
Specific Gravity1.07 g/cc1.66 g/cc1.55 g/cc
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.17.9 cu. in./lb.
ColorTranslucentGreyLight Brown
Die B Tear Strength75 pli
Tensile Strength350 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Elongation @ Break1,000 %
100% Modulus15 psi
Compressive Strength12,500 psi
Compressive Modulus125,500 psi
Flexural Strength7,660 psi
Flexural Modulus1,403,000 psi
Shrinkage<.001 in. / in.0.0006 in. / in.
Heat Deflection Temp135 °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™ 655 + 102 Hardener

EpoxAcast655 (formerly Metalset™ A-30) is a versatile aluminum filled castable epoxy that is very hard and strong. It is dimensionally stable, even when mass cast up to 512 in3 / 8,390 cm3.

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Free Form™ Habitat™ Flex FR

Free Form™ Habitat™ Flex FR Epoxy Putty is a mix-and-apply-by-hand putty that is that is certified flame resistant (E84, Class A) and is used to create display elements that are semi-rigid and extremely tough. Habitat™ Flex FR is solvent free and contains no VOC’s. Working time is 90 minutes and handling time is 24 hours at room temperature (73°F/23°C). Cured epoxy has some flexibility with excellent impact resistance and abrasion resistance.

Use with or without Habitat™ Folding Powder™ – mix equal parts A+B and apply Habitat™ Flex FR. For thickening, add Folding Powder™ into epoxy putty. Folding Powder™ reduces stickiness and makes the epoxy more handleable. Once putty is applied, it can be stamped with a silicone rubber stamp to create repeating patterns with intricate detail over a large surface area. Surface can be smoothed with alcohol or water. New Habitat™ Flex FR will bond to cured Habitat™ Flex FR without delamination.

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