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Ecoflex™ 5

Ecoflex™ 5 vs. Tarbender™ vs. EpoxAcast™ 655 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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Tarbender™

Ecoflex™ 5 vs. Tarbender™ vs. EpoxAcast™ 655 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 655 + 102 Hardener

High Gloss Coating and Encapsulant

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps23,000 cps1,100 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)2A:1B
Pot Life1 minute75 minutes45 minutes
Cure Time5 minutes9 hours16 hours
Shore D Hardness9075
Shore A Hardness5
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.25.4 cu. in./lb.
ColorTranslucentGreyClear
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 HardenerTarbender™
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps23,000 cps1,100 cps
Mix Ratio By Volume1A:1B2A:1B
Mix Ratio By Weight1A:1B100A:11B100A:41B
Pot Life1 minute75 minutes45 minutes
Thin Film Working Time2 hours
Thin Film Recoat Time6 hours
Tack Free Time8 hours
Cure Time5 minutes9 hours16 hours
Shore D Hardness9075
Shore A Hardness5
Specific Gravity1.07 g/cc1.66 g/cc1.09 g/cc
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.25.4 cu. in./lb.
ColorTranslucentGreyClear
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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Tarbender™

Tarbender™ is a clear liquid epoxy that can be poured or brushed over a variety of surfaces to provide a strong, high gloss coating. Parts A and B mix together and flow easily. Tarbender™ epoxy cures at room temperature and offers high impact resistance.  It can be applied over wood, plaster, concrete, foam, fabrics, paper, etc. can be used to encapsulate 2-D or 3-D objects.  Tarbender™ is certified “aquarium safe” and used by aquariums to create hyperrealistic coral and other aquarium displays.  It is also used by zoos around the world as a coating for themed elements and displays. 

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