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Ecoflex™ 5

Ecoflex™ 5 vs. TASK™ 6 vs. EpoxAcast™ 655 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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TASK™ 6

Ecoflex™ 5 vs. TASK™ 6 vs. EpoxAcast™ 655 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 655 + 102 Hardener

Low Cost, High Performance

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Resins
Mixed Viscosity13,000 cps23,000 cps800 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute75 minutes7 minutes
Cure Time5 minutes9 hours75 minutes
Shore D Hardness9075
Shore A Hardness5
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.25.9 cu. in./lb.
ColorTranslucentGreyTan
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 HardenerTASK™ 6
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Resins
Mixed Viscosity13,000 cps23,000 cps800 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:11B1A:1B
Pot Life1 minute75 minutes7 minutes
Cure Time5 minutes9 hours75 minutes
Shore D Hardness9075
Shore A Hardness5
Specific Gravity1.07 g/cc1.66 g/cc1.07 g/cc
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.25.9 cu. in./lb.
ColorTranslucentGreyTan
Die B Tear Strength75 pli
Tensile Strength350 psi5,200 psi
Tensile Modulus2,040,000 psi146,000 psi
Ultimate Tensile4,810 psi
Elongation @ Break1,000 %4 %
100% Modulus15 psi
Compressive Strength12,500 psi5,570 psi
Compressive Modulus125,500 psi65,000 psi
Flexural Strength7,660 psi6,200 psi
Flexural Modulus1,403,000 psi182,500 psi
Shrinkage<.001 in. / in.0.0006 in. / in.0.0031 in. / in.
Heat Deflection Temp135 °F162 °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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TASK™ 6

TASK™ 6 low cost, high performance casting resin yields castings that are tan and virtually bubble free. This resin offers superior physical and performance properties compared to our popular Smooth-Cast™ Series of general purpose casting resins. Vacuum degassing is not necessary and it offers the convenience of a 1A:1B by volume or weight mix ratio.

TASK™ 6 has high tensile and flexural strength, as well as high flexural modulus. This plastic was formulated for a variety of industrial applications including pattern making and making prototype models. This resin is designed for casting in thicknesses up to ½” (1.27 cm).

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