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Ecoflex™ 5

Ecoflex™ 5 vs. Body Double™ Fast Set vs. Smooth-Cast® 310

Super-Soft, Addition Cure Silicone Rubber

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Smooth-Cast® 310

Ecoflex™ 5 vs. Body Double™ Fast Set vs. Smooth-Cast® 310Ecoflex™ 5

Bright White, Ultra Low Viscosity Liquid Plastics

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Body Double™ Fast Set

Ecoflex™ 5 vs. Body Double™ Fast Set vs. Smooth-Cast® 310Ecoflex™ 5 versus Smooth-Cast® 310

Fast Setting “Apply to Skin” Platinum Silicone Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cps80 cpsBrushable
Pot Life1 minute20 minutes90 seconds
Cure Time5 minutes4 hours7 minutes
Shore D Hardness70
Shore A Hardness525
ColorTranslucentWhiteAqua, Green
Tensile Strength350 psi3,000 psi450 psi
Elongation @ Break1,000 %7.5 %500 %
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™ 5Smooth-Cast® 310Body Double™ Fast Set
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cps80 cpsBrushable
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:90B1A:1B
Pot Life1 minute20 minutes90 seconds
Cure Time5 minutes4 hours7 minutes
Shore D Hardness70
Shore A Hardness525
Specific Gravity1.07 g/cc1.05 g/cc1.17 g/cc
Specific Volume25.8 cu. in./lb.26.4 cu. in./lb.23.7 cu. in./lb.
ColorTranslucentWhiteAqua, Green
Die B Tear Strength75 pli
Die C Tear Strength40 pli
Tensile Strength350 psi3,000 psi450 psi
Tensile Modulus134,000 psi
Elongation @ Break1,000 %7.5 %500 %
100% Modulus15 psi
Compressive Strength3,800 psi
Compressive Modulus44,900 psi
Flexural Strength4,000 psi
Flexural Modulus118,000 psi
Shrinkage<.001 in. / in.0.0065 in. / in.<.001 in. / in.
Heat Deflection Temp120 °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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Smooth-Cast® 310

The Smooth-Cast® 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. The differences between them are pot life and demold time.

These resins readily accept fillers (such as URE-FIL® 3 from Smooth-On) and can be colored with SO-Strong® or Ignite® color tints (Smooth-Cast® 325 series accepts pigments better than the Smooth Cast® 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast® 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.

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Body Double™ Fast Set

Body Double™ is a long lasting platinum-cure silicone rubber that can be applied directly to the skin to make molds of the face, hands and other body parts. The rubber cures quickly and will reproduce perfect detail from any original model – far better detail than any alginate! Cured material is skin safe and certified by an independent laboratory.

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