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Smooth-Cast™ 326

Mold Max™ 15T vs. Smooth-Cast™ 326

Ultra Low Viscosity Liquid Plastics

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Mold Max™ 15T

Mold Max™ 15T vs. Smooth-Cast™ 326Smooth-Cast™ 326

Translucent Silicone Rubber

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Key Differences

Product Type
  • Urethane Resins
  • Silicone Rubber - Tin Cure
Mixed Viscosity100 cps20,000 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)
Pot Life9 minutes45 minutes
Cure Time60 minutes24 hours
Shore D Hardness72
Shore A Hardness15
ColorClear AmberTranslucent
Tensile Strength3,170 psi490 psi
Elongation @ Break10 %600 %
Shrinkage0.0075 in. / in.0.002 in. / in.
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™ 326Mold Max™ 15T
Product Type
  • Urethane Resins
  • Silicone Rubber - Tin Cure
Mixed Viscosity100 cps20,000 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight115A:100B100A:10B
Pot Life9 minutes45 minutes
Cure Time60 minutes24 hours
Shore D Hardness72
Shore A Hardness15
Specific Gravity1.07 g/cc1.08 g/cc
Specific Volume25.9 cu. in./lb.25.6 cu. in./lb.
ColorClear AmberTranslucent
Die B Tear Strength94 pli
Tensile Strength3,170 psi490 psi
Tensile Modulus140,000 psi
Elongation @ Break10 %600 %
100% Modulus35 psi
Compressive Strength3,080 psi
Compressive Modulus32,200 psi
Flexural Strength3,100 psi
Flexural Modulus95,700 psi
Shrinkage0.0075 in. / in.0.002 in. / in.
Heat Deflection Temp120 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)400 °F

Product Description

Smooth-Cast™ 326

The Smooth-Cast™ 325, 326 & 327 ColorMatch™ Series plastics are fast-cast resins that were developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. The ColorMatch™ Series is formulated “color neutral”. Small amounts of pigment will yield accurate, vivid colors from cured castings using So-Strong™ tints or Ignite™ color pigments. The ColorMatch™ Series offers the convenience of a 1A: 1B mix ratio by volume and has a very low viscosity. Demold times range from about 10 minutes to 2-4 hours (depending on product, mass and mold configuration). Note: Large mass castings will get very hot and shrink more, depending on mold configuration.

The ColorMatch™ Series also readily accept fillers (such as URE-FIL™ 3 from Smooth-On). Applications for the ColorMatch™ Series plastics include making pigmented prototype models or figures, special effect props, reproducing small to medium size sculptures, decorative jewelry, etc.

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Mold Max™ 15T

Mold Max™ 15T silicone is a water white translucent tin cured silicone rubber compound that has exceptional tear strength and working properties. It features Smooth-On’s “Libra™” catalyst for long library life. Mixed 100A:10B by weight, vacuum degassing is recommended for de-airing. Rubber cures overnight at room temperature. Mold Max™ ‘T’ silicones can be thickened with Thi-Vex™ thickener for brush-on application and effects.

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