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Ecoflex™ 5

Ecoflex™ 5 vs. Body Double™ SILK vs. Epsilon™ PRO

Super-Soft, Addition Cure Silicone Rubber

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Epsilon™ PRO

Ecoflex™ 5 vs. Body Double™ SILK vs. Epsilon™ PROEcoflex™ 5

High Performance Impact Resistant EPS Foam Coating

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Body Double™ SILK

Ecoflex™ 5 vs. Body Double™ SILK vs. Epsilon™ PROEcoflex™ 5 versus Epsilon™ PRO

Self-Releasing Lifecasting Silicone Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy and Urethane Coatings
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cps4,000 cpsBrushable
Pot Life1 minute22 minutes6 minutes
Cure Time5 minutes16 hours20 minutes
Shore D Hardness65
Shore A Hardness525
ColorTranslucentClear AmberGreen
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™ 5Epsilon™ PROBody Double™ SILK
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy and Urethane Coatings
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cps4,000 cpsBrushable
Mix Ratio By Volume1A:1B2A:1B1A:1B
Mix Ratio By Weight1A:1B100A:44B1A:1B
Pot Life1 minute22 minutes6 minutes
Thin Film Working Time35 minutes
Thin Film Recoat Time3 hours
Cure Time5 minutes16 hours20 minutes
Shore D Hardness65
Shore A Hardness525
Specific Gravity1.07 g/cc1.11 g/cc0.91 g/cc
Specific Volume25.8 cu. in./lb.25.0 cu. in./lb.30.4 cu. in./lb.
ColorTranslucentClear AmberGreen
Die B Tear Strength75 pli
Tensile Strength350 psi
Elongation @ Break1,000 %
100% Modulus15 psi
Shrinkage<.001 in. / in.<.001 in. / in.
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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Epsilon™ PRO

Epsilon™ PRO is a thixotropic epoxy coating that self-thickens for brushing onto a variety of surfaces.  Compared to original Epsilon™, Epsilon™ PRO offers a longer working time and cured epoxy is semi-rigid, offering better impact resistance.  Mix ratio for Epsilon™ PRO is 2A:1B by volume (100A:44B by weight).  A gram scale is not needed to use this product.

Applied in thin layers, mixed material holds a vertical surface without sagging or slumping. Material wets out uniformly over different surfaces.  Pot life is 22 minutes, with a re-coat time of 3 hours.  All layers should be allowed to cure for 16 hours at 73° F / 23° C and can be accelerated with mild heat.  Epsilon™ PRO is clear and can be easily colored using Ignite™ or UVO™ colorants.  Cured coating has a gloss finish and can be sanded, primed and painted.

Applications: Epsilon™ PRO is suitable for use as a protective, impact resistant coating for EPS or polyurethane foam. It can also be applied to plaster, concrete, wood and fabrics. This product is not sensitive to moisture / humidity and contains no VOC’s. 

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Body Double™ SILK

Body Double™ SILK is a self-releasing 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 excellent detail from any original model. Certified Skin Safe - Material is skin safe and certified by an independent laboratory. 

Body Double™ SILK will release from closely cropped hair-covered skin surfaces(short beards, mustaches, eyebrows, pubic hair, etc.). Release cream or Hyperfolic are not needed when using Body Double™ SILK. Body Double™ SILK will last for many castings of almost any material including plaster, Matrix™ Neo™, wax, resins (Smooth-Cast urethanes, polyester, etc.) Body Double™ SILK has a working time of 6 minutes and a demold time of 20 minutes*.

*Depending on material temperature, ambient temperature and body temperature – see “Preparation” below for details.

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