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Ecoflex™ 5

Ecoflex™ 5 vs. Alja-Safe™ Breeze vs. EpoxAcast™ 655 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

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Alja-Safe™ Breeze

Ecoflex™ 5 vs. Alja-Safe™ Breeze vs. EpoxAcast™ 655 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 655 + 102 Hardener

Crystalline Silica-Free Liquid Alginate

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Lifecasting Materials
Mixed Viscosity13,000 cps23,000 cpsVariable
Mix Ratio By Volume1A:1BN/A (gram scale required)5 Parts Warm Water (80° F / 27° C) to 1 Part Alja-Safe Breeze liquid
Pot Life1 minute75 minutes3 minutes
Cure Time5 minutes9 hours8 minutes
Shore D Hardness90
Shore A Hardness5
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.26 cu. in./lb.
ColorTranslucentGreyBlue
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 HardenerAlja-Safe™ Breeze
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Lifecasting Materials
Mixed Viscosity13,000 cps23,000 cpsVariable
Mix Ratio By Volume1A:1B5 Parts Warm Water (80° F / 27° C) to 1 Part Alja-Safe Breeze liquid
Mix Ratio By Weight1A:1B100A:11B
Pot Life1 minute75 minutes3 minutes
Cure Time5 minutes9 hours8 minutes
Shore D Hardness90
Shore A Hardness5
Specific Gravity1.07 g/cc1.66 g/cc
Specific Volume25.8 cu. in./lb.16.7 cu. in./lb.26 cu. in./lb.
ColorTranslucentGreyBlue
Die B Tear Strength75 pli
Tensile Strength350 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Elongation @ Break1,000 %
100% Modulus15 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.
Heat Deflection Temp135 °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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Alja-Safe™ Breeze

No powder - no dust! Alja-Safe™ Breeze (Patent Pending) is a new liquid alginate which blends easily with water, creating a unique, skin safe moldmaking material. Alja-Safe™ Breeze is perfect for making single-use pourable molds of hands, feet and other body parts. It captures excellent detail, giving you an accurate reproduction of your original. If you want to make a mold of vertical body surfaces, you can use original Alja-Safe™ or Alja-Safe™ Acrobat™.

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