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Ecoflex™ 5

Ecoflex™ 5 vs. Soma Foama® 25 vs. Epsilon™ PRO

Super-Soft, Addition Cure Silicone Rubber

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Epsilon™ PRO

Ecoflex™ 5 vs. Soma Foama® 25 vs. Epsilon™ PROEcoflex™ 5

High Performance Impact Resistant EPS Foam Coating

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy and Urethane Coatings
  • Mix and Pour Expanding Foams
  • Skin Safe FX Materials
Mixed Viscosity13,000 cps4,000 cps10,000 cps
Pot Life1 minute22 minutes90 seconds
Cure Time5 minutes16 hours1 hour
Shore D Hardness65
Shore A Hardness5
Specific Volume25.8 cu. in./lb.25.0 cu. in./lb.69 cu. in./lb.
ColorTranslucentClear AmberWhite
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™ PROSoma Foama® 25
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy and Urethane Coatings
  • Mix and Pour Expanding Foams
  • Skin Safe FX Materials
Mixed Viscosity13,000 cps4,000 cps10,000 cps
Mix Ratio By Volume1A:1B2A:1B1A:1B
Mix Ratio By Weight1A:1B100A:44B1A:1B
Pot Life1 minute22 minutes90 seconds
Thin Film Working Time35 minutes
Thin Film Recoat Time3 hours
Handling Time20 minutes
Cure Time5 minutes16 hours1 hour
Shore D Hardness65
Shore A Hardness5
Expansion (approximate)2-3 times
Foam Density25 lb/ft³
Specific Gravity1.07 g/cc1.11 g/cc0.40 g/cc
Specific Volume25.8 cu. in./lb.25.0 cu. in./lb.69 cu. in./lb.
ColorTranslucentClear AmberWhite
Die B Tear Strength75 pli
Tensile Strength350 psi
Elongation @ Break1,000 %
100% Modulus15 psi
Shrinkage<.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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Soma Foama® 25

Soma Foama® is a soft, two-component platinum silicone flexible foam that is versatile and easy to use. Soma Foama® 25 is a higher density foam vs. original Soma Foama® 15 which expands 2-3 times its original volume and develops a uniform 25 lb./cu. ft. cell structure (400 kg/m³). Vibrant colors can be achieved by adding Silc-Pig® silicone color pigments. Cured foam is high heat resistance (will resist up to 350°F/176°C), water resistant, UV resistant and resists oxidation and ozone degradation.

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Silicone Rubber - Tin Cure ›

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Epoxy and Urethane Coatings ›

Mix and Pour Expanding Foams ›

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Lifecasting Materials ›

Skin Safe FX Materials ›

Polymer Modifiers for Concrete and Gypsum ›