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EpoxAcast™ 690

EpoxAcast™ 690 vs. EZ-Spray® Silicone 22EZ-Spray® Silicone 22

Optically Clear Casting Epoxy

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
Mixed Viscosity11,000 cps280 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)
Pot Life5 minutes5 hours
Cure Time45 minutes24 hours
Shore D Hardness80
Shore A Hardness22
ColorTranslucent GreenClear
Tensile Strength490 psi6,630 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

EZ-Spray® Silicone 22EpoxAcast™ 690
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
Mixed Viscosity11,000 cps280 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:30B
Pot Life5 minutes5 hours
Cure Time45 minutes24 hours
Shore D Hardness80
Shore A Hardness22
Specific Gravity1.08 g/cc1.10 g/cc
Specific Volume25.6 cu. in./lb.25 cu. in./lb.
ColorTranslucent GreenClear
Die B Tear Strength102 pli
Tensile Strength490 psi6,630 psi
Tensile Modulus572,000 psi
Elongation @ Break450 %
100% Modulus49 psi
Compressive Strength9,610 psi
Compressive Modulus91,300 psi
Flexural Strength10,980 psi
Flexural Modulus410,000 psi
Shrinkage<.001 in. / in.0.002 in. / in.
Heat Deflection Temp115 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °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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EpoxAcast™ 690

EpoxAcast™ 690 is a clear casting epoxy resin suitable for a variety of industrial and art-related projects requiring a rigid, clear finished casting. It is mixed 100A:30B by weight (gram scale required) and features a very low viscosity for easy mixing and minimal bubble entrapment. Working time is 5 hours and cure time is 24 hours at room temperature. Castings cure with negligible shrinkage and are very hard and strong. Resin can be colored with UVO™ or IGNITE™ colorants. This product is not moisture sensitive and can be used in humid environments. Recommended casting thickness maximum per layer is 3/8 in. / 0.95 cm.

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