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Ecoflex™ 5

Mold Star™ 30 vs. Ecoflex™ 5

Super-Soft, Addition Cure Silicone Rubber

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Mold Star™ 30

Mold Star™ 30 vs. Ecoflex™ 5Ecoflex™ 5

1A:1B Mix By Volume Platinum Silicone Mold Rubber

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Key Differences

Pot Life1 minute45 minutes
Cure Time5 minutes6 hours
Shore A Hardness530
ColorTranslucentBlue
Elongation @ Break1,000 %339 %
100% Modulus15 psi96 psi
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™ 5Mold Star™ 30
Product Type
  • Silicone Rubber - Platinum Cure
  • Silicone Rubber - Platinum Cure
Mixed Viscosity13,000 cps12,500 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life1 minute45 minutes
Cure Time5 minutes6 hours
Shore A Hardness530
Specific Gravity1.07 g/cc1.12 g/cc
Specific Volume25.8 cu. in./lb.24.7 cu. in./lb.
ColorTranslucentBlue
Die B Tear Strength75 pli88 pli
Tensile Strength350 psi420 psi
Elongation @ Break1,000 %339 %
100% Modulus15 psi96 psi
Shrinkage<.001 in. / in.<.001 in. / in.
Useful Temperature (min)-65 °F-65 °F
Useful Temperature (max)450 °F450 °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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Mold Star™ 30

Mold Star™ mold rubbers are easy to use platinum silicones which are mixed 1A:1B by volume (no weighing scale necessary). Mold Star™ silicones feature relatively low viscosities and vacuum degassing is not required for most applications. Mold Star™ 30 is a harder material, with a 30A Shore hardness.

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