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Crystal Clear™ 202

Crystal Clear™ 202 vs. EZ-Spray™ Silicone 20

Clear Urethane Casting Resin

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Key Differences

Product Type
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
Mixed Viscosity600 cps11,000 cps
Mix Ratio By VolumeN/A (gram scale required)1A:1B
Pot Life9 minutes3 minutes
Cure Time90 minutes20 minutes
Shore D Hardness80
Shore A Hardness20
ColorClearTranslucent Green
Tensile Strength3,500 psi495 psi
Elongation @ Break10 %470 %
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

Crystal Clear™ 202EZ-Spray™ Silicone 20
Product Type
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
Mixed Viscosity600 cps11,000 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:90B
Pot Life9 minutes3 minutes
Cure Time90 minutes20 minutes
Shore D Hardness80
Shore A Hardness20
Specific Gravity1.036 g/cc1.08 g/cc
Specific Volume26.7 cu. in./lb.25.6 cu. in./lb.
ColorClearTranslucent Green
Die B Tear Strength100 pli
Tensile Strength3,500 psi495 psi
Tensile Modulus86,240 psi
Elongation @ Break10 %470 %
100% Modulus47 psi
Compressive Strength4,200 psi
Compressive Modulus44,000 psi
Flexural Strength5,390 psi
Flexural Modulus183,200 psi
Shrinkage0.0125 in. / in.<.001 in. / in.
Heat Deflection Temp120 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °F
Index of Refraction at 20°C1.49888
Index of Refraction at 25°C1.49893

Product Description

Crystal Clear™ 202

Crystal Clear™ 202 is a water white clear and made specifically for applications that require clarity. These rigid urethane casting resins differ only in working and demold times. Low viscosity ensures easy mixing and pouring. Crystal Clear™ resins cure at room temperature* with negligible shrinkage.

CAUTION: NOT FOR HOME USE. THIS PRODUCT IS FOR INDUSTRIAL USE ONLY. With adequate local exhaust ventilation, respiratory protection is not normally required when using this product. Where risk assessment shows air-purifying respirators are appropriate, follow OSHA respirator regulations and European Standards EN 141, 143 and 371. Protective clothing (gloves and long sleeves) is required to minimize the risk of dermal sensitization. If breathing is affected or a dermal rash develops, immediately cease using this product and seek medical attention. Read SDS before using.

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EZ-Spray™ Silicone 20

EZ~Spray™ Silicone 20 is a sprayable silicone which cures 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 20 cures in about 20 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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