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EpoxAcast™ 655 + 103 Hardener

EpoxAcast™ 655 + 103 Hardener vs. Dragon Skin™ 25 NV

Aluminum Filled Casting Epoxy Resin

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Dragon Skin™ 25 NV

EpoxAcast™ 655 + 103 Hardener vs. Dragon Skin™ 25 NVEpoxAcast™ 655 + 103 Hardener

1A:1B Mix By Volume Low Viscosity Platinum Silicone Rubber

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Key Differences

Product Type
  • Epoxy Casting and Laminating Resins
  • Silicone Rubber - Platinum Cure
  • Skin Safe FX Materials
Mixed Viscosity23,000 cps5,000 cps
Mix Ratio By VolumeN/A (gram scale required)1A:1B
Pot Life3.5 hours10 minutes
Cure Time24 hours30 minutes
Shore D Hardness90
Shore A Hardness25
Specific Volume16.7 cu. in./lb.25.16 cu. in./lb.
ColorGreyTranslucent
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

EpoxAcast™ 655 + 103 HardenerDragon Skin™ 25 NV
Product Type
  • Epoxy Casting and Laminating Resins
  • Silicone Rubber - Platinum Cure
  • Skin Safe FX Materials
Mixed Viscosity23,000 cps5,000 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:12B1A:1B
Pot Life3.5 hours10 minutes
Cure Time24 hours30 minutes
Shore D Hardness90
Shore A Hardness25
Specific Gravity1.66 g/cc1.1 g/cc
Specific Volume16.7 cu. in./lb.25.16 cu. in./lb.
ColorGreyTranslucent
Die B Tear Strength139 pli
Tensile Strength490 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Tensile Elongation0.54 %
Elongation @ Break616 %
100% Modulus66 psi
Compressive Strength12,500 psi
Compressive Modulus125,500 psi
Flexural Strength7,660 psi
Flexural Modulus1,403,000 psi
Shrinkage0.0006 in. / in.<.001 in. / in.
Heat Deflection Temp135 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)450 °F
Dielectric Strength>350 volts/mil
Thermal Conductivity0.675 W/M*K

Product Description

EpoxAcast™ 655 + 103 Hardener

EpoxAcast™ 655 (formerly Metalset™ A-30) is a versatile aluminum filled castable epoxy resin 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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Dragon Skin™ 25 NV

Dragon Skin™ NV Series silicones are easy to use translucent platinum silicones that are mixed 1A:1B by volume (no weighing scale necessary). They feature very low viscosities and vacuum degassing is not required for most applications.

Properly cured Dragon Skin™ 25 NV complies with 21 CFR 177.2600 "Rubber articles intended for repeated use" for use with dry food and aqueous food only.  This material has been tested by an independent laboratory to comply with 21 CFR 177.2600(e), water extractable limits for repeated use in aqueous food.  This material is not intended for repeated use in contact with fatty foods.

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