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Ecoflex™ 5

Ecoflex™ 5 vs. Alja-Safe™

Super-Soft, Addition Cure Silicone Rubber

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Alja-Safe™

Ecoflex™ 5 vs. Alja-Safe™Ecoflex™ 5

Crystalline Silica-Free Alginate

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cpsVariable
Pot Life1 minute5 minutes
Cure Time5 minutes8 minutes
Shore A Hardness5
ColorTranslucentLight Purple
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™ 5Alja-Safe™
Product Type
  • Silicone Rubber - Platinum Cure
  • Lifecasting Materials
Mixed Viscosity13,000 cpsVariable
Mix Ratio By Volume1A:1B1 Part Warm Water (80° F / 27° C) to 1 Part Alja-Safe Powder
Mix Ratio By Weight1A:1B4 Parts Warm Water (80° F / 27° C) to 1 Part Alja-Safe Powder
Pot Life1 minute5 minutes
Cure Time5 minutes8 minutes
Shore A Hardness5
Specific Gravity1.07 g/cc
Specific Volume25.8 cu. in./lb.26 cu. in./lb.
ColorTranslucentLight Purple
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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Alja-Safe™

Safe to use Alja-Safe™ is the world’s first alginate that does not contain crystalline silica (a known carcinogen). Alja-Safe™ is perfect for making single-use molds of the face, hands and other body parts. It captures detail better than other alginates, giving you a more accurate reproduction of your original.

Certified Skin Safe - Material is skin safe and certified by an independent laboratory.

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