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Ecoflex™ 5

OOMOO™ 30 vs. Ecoflex™ 5 vs. EpoxAcast™ 655 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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OOMOO™ 30

OOMOO™ 30 vs. Ecoflex™ 5 vs. EpoxAcast™ 655 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 655 + 102 Hardener

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Silicone Rubber - Tin Cure
Mixed Viscosity13,000 cps23,000 cps4,250 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute75 minutes30 minutes
Cure Time5 minutes9 hours6 hours
Shore D Hardness90
Shore A Hardness530
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.20.6 cu. in./lb.
ColorTranslucentGreyLavender
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 HardenerOOMOO™ 30
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Silicone Rubber - Tin Cure
Mixed Viscosity13,000 cps23,000 cps4,250 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:11B100A:130B
Pot Life1 minute75 minutes30 minutes
Cure Time5 minutes9 hours6 hours
Shore D Hardness90
Shore A Hardness530
Specific Gravity1.07 g/cc1.66 g/cc1.34 g/cc
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.20.6 cu. in./lb.
ColorTranslucentGreyLavender
Die B Tear Strength75 pli40 pli
Tensile Strength350 psi240 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Elongation @ Break1,000 %250 %
100% Modulus15 psi100 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.0.0025 in. / in.
Heat Deflection Temp135 °F
Useful Temperature (min)-65 °F-65 °F
Useful Temperature (max)450 °F400 °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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OOMOO™ 30

No Vacuuming – No Scale – Easy To Use . . . OOMOO™ 30 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary). It has low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary. This product cures at room temperature with negligible shrinkage. OOMOO™ 30 has a 30-minute pot life, with a six-hour cure time.

For The Novice Mold Maker - OOMOO™ silicones do not have great tear strength. They are good for making simple one- or twopiece block molds. If you require a high-tear strength silicone, Mold Max™ silicones are recommended.

OOMOO™ 30 is suitable for a variety of art-related and industrial applications including making one and two-piece block molds for sculpture and prototype reproduction, casting plaster, resins and wax. OOMOO™ silicones are also suitable for electrical potting and encapsulation applications.

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