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TASK™ 18

TASK™ 18 vs. EZ-Spray® Silicone 22 vs. EZ-Spray® FoamEZ-Spray® Silicone 22 versus EZ-Spray® Foam

Aluminum Filled urethane Casting Resin

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Resins
Mixed Viscosity11,000 cps400 cps4,400 cps
Mix Ratio By Volume1A:1B1A:1BN/A (gram scale required)
Pot Life5 minutes13 seconds20 minutes
Cure Time45 minutes10 minutes16 hours
Shore D Hardness88
Shore A Hardness22
Specific Gravity1.08 g/cc0.128 g/cc1.57 g/cc
ColorTranslucent GreenTanMetal Gray
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 22EZ-Spray® FoamTASK™ 18
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Resins
Mixed Viscosity11,000 cps400 cps4,400 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight26A:100B
Pot Life5 minutes13 seconds20 minutes
Tack Free Time2 minutes
Cure Time45 minutes10 minutes16 hours
Shore D Hardness88
Shore A Hardness22
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.57 g/cc
Specific Volume25.6 cu. in./lb.17.6 cu. in./lb.
ColorTranslucent GreenTanMetal Gray
Die B Tear Strength102 pli
Tensile Strength490 psi3,250 psi
Tensile Modulus514,000 psi
Elongation @ Break450 %1 %
100% Modulus49 psi
Compressive Strength8,420 psi
Compressive Modulus97,300 psi
Flexural Strength10,700 psi
Flexural Modulus86,000 psi
Shrinkage<.001 in. / in.0.0006 in. / in.
Heat Deflection Temp149 °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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EZ-Spray® Foam

EZ~Spray® Foam is a polyurethane foam compound that can be conveniently sprayed using Smooth-On’s EZ~Spray® Junior System. Foam cures quickly to strong, lightweight and impact resistant 8 lb. rigid foam that can be used for a variety of applications including making lightweight castings. Foam can also be sprayed over certain rubber mold configurations as a mother mold material. For more information, refer to SmoothOn’s EZ~Spray® Junior manual and video.

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TASK™ 18

TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming molds. When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns.

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