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TASK™ 4

TASK™ 4 vs. EZ-Spray® Silicone 22EZ-Spray® Silicone 22

Urethane Casting Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
Mixed Viscosity11,000 cps250 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)
Pot Life5 minutes20 minutes
Cure Time45 minutes16 hours
Shore D Hardness83
Shore A Hardness22
ColorTranslucent GreenIvory
Tensile Strength490 psi6,500 psi
Elongation @ Break450 %4 %
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 22TASK™ 4
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
Mixed Viscosity11,000 cps250 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:100B
Pot Life5 minutes20 minutes
Cure Time45 minutes16 hours
Shore D Hardness83
Shore A Hardness22
Specific Gravity1.08 g/cc1.167 g/cc
Specific Volume25.6 cu. in./lb.23.9 cu. in./lb.
ColorTranslucent GreenIvory
Die B Tear Strength102 pli
Tensile Strength490 psi6,500 psi
Tensile Modulus130,000 psi
Elongation @ Break450 %4 %
100% Modulus49 psi
Compressive Strength7,400 psi
Compressive Modulus75,000 psi
Flexural Strength9,000 psi
Flexural Modulus204,000 psi
Shrinkage<.001 in. / in.0.0035 in. / in.
Heat Deflection Temp110 °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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TASK™ 4

TASK™ 4 is a unique polyurethane casting resin that is very strong when cast in Ultra-Thin sections ranging from 0.03” to 0.50”(0.075cm to 1.27cm). TASK™ 4 has a very low mixed viscosity, ensuring flawless pick-up of even the finest detail. Cured plastic exhibits very low shrinkage which is why this plastic has become a favorite of prototype and design professionals throughout the world. Pot life is 20 minutes and cure time is 16 hours at 73°F/23°C.

Vibrant colors and color effects are possible by adding SO-Strong™ color tints. Fully cured models made from TASK™ 4 are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for TASK™ 4 include making prototype and architectural models, model toys, durable miniatures, ultra-thin mechanical parts and special effect props.

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Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Urethane Rubber ›

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