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Mold Star™ 31T

EZ-Spray® Silicone 22 vs. Mold Star™ 31TEZ-Spray® Silicone 22

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

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Key Differences

Cure Time45 minutes23 minutes
ColorTranslucent GreenTranslucent
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

EZ-Spray® Silicone 22Mold Star™ 31T
Product Type
  • Silicone Rubber - Platinum Cure
  • Silicone Rubber - Platinum Cure
Mixed Viscosity11,000 cps11,000 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life5 minutes5 minutes
Cure Time45 minutes23 minutes
Shore A Hardness2230
Specific Gravity1.08 g/cc1.08 g/cc
Specific Volume25.6 cu. in./lb.25.6 cu. in./lb.
ColorTranslucent GreenTranslucent
Die B Tear Strength102 pli90 pli
Tensile Strength490 psi420 psi
Elongation @ Break450 %400 %
100% Modulus49 psi47 psi
Shrinkage<.001 in. / in.< .001 in. / in.
Useful Temperature (min)-65 °F-65 °F
Useful Temperature (max)500 °F450 °F

Product Description

EZ-Spray® Silicone 22

EZ~Spray® Silicone 22 are sprayable silicones which cure quickly to soft rubbers with high elongation and tear strength. Liquid silicone is sprayed through the EZ~Spray® Junior Cartridge System which is an economical alternative to expensive spray equipment. After a suitable thickness is attained, EZ~Spray® Silicone 22 cures in about 45 minutes. EZ~Spray® Silicone cures with negligible shrinkage to strong, durable silicone rubbers good for production casting of polyester, epoxy or urethane resins, gypsum, concrete and other materials.

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Mold Star™ 31T

Mold Star31T is an easy to use Shore 30A translucent platinum silicone that is mixed 1A:1B by volume (no weighing scale necessary). It features a relatively low viscosity and vacuum degassing is not required for most applications. Pot life is 5 minutes and cure time is 23 minutes at room temperature.

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