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Smooth-Cast™ 57D

Ecoflex™ GEL vs. Smooth-Cast™ 57D

Semi-Rigid Urethane Casting Resin

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Ecoflex™ GEL

Ecoflex™ GEL vs. Smooth-Cast™ 57DSmooth-Cast™ 57D

Platinum Cure Silicone Rubber For Special Effects

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Key Differences

Product Type
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
  • Skin Safe FX Materials
Mixed Viscosity300 cps9,300 cps
Pot Life3 minutes15 minutes
Cure Time30 minutes2 hours
Shore D Hardness57
Shore A Hardness000-35
ColorTranslucent WhiteTranslucent
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.

All Technical Data

Smooth-Cast™ 57DEcoflex™ GEL
Product Type
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
  • Skin Safe FX Materials
Mixed Viscosity300 cps9,300 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight100A:93B1A:1B
Pot Life3 minutes15 minutes
Cure Time30 minutes2 hours
Shore D Hardness57
Shore A Hardness000-35
Specific Gravity1.05 g/cc0.98 g/cc
Specific Volume26.4 cu. in./lb.28 cu. in./lb.
ColorTranslucent WhiteTranslucent
Tensile Strength2,420 psi
Elongation @ Break100 %>1000 %
Shrinkage0.012 in. / in.<.001 in. / in.
Refractive Index1.40451

Product Description

Smooth-Cast™ 57D

Smooth-Cast™ 57D is a semi-rigid urethane plastic that offers a gradual cure profile (does not snap cure), making it suitable for machine or hand rotational casting.

Use For Rotational Casting - Once poured into a suitable rubber mold configuration, the mold can be rotated so that the resin mixture gradually coats the inside of the mold cavity. After an adequate wall thickness is attained inside the mold, the result is a cured hollow casting that is semi-rigid and highly impact resistant.

Use as a Casting ResinSmooth-Cast™ 57D can also be used as a casting resin for making solid, semi-rigid castings that are tough and durable.

Mix ratio is 1A:1B by volume. Working time is 3 minutes, demold time is 30 minutes and full cure properties are attained after 24 hours. Color is white translucent and the material is very easy to color with SO-Strong™, UVO™ or Ignite™ colorants. Cured resin is also easy to paint with acrylic paints or UreCoat™ flexible coating for applications requiring thick, durable finishes.

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Ecoflex™ GEL

Ecoflex™ GEL is an extremely soft, platinum silicone rubber gel specifically designed for creating silicone makeup appliances, for cushioning, creating gaskets, encapsulation, and other applications requiring a very soft silicone material.

Certified Skin Safe - Cured Ecoflex™ GEL is skin safe and is certified by an independent laboratory. 

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