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Formlastic™ 48

EZ-Spray® Silicone 22 vs. EZ-Spray® Foam vs. Formlastic™ 48EZ-Spray® Silicone 22 versus EZ-Spray® Foam

Urethane Moldmaking Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Rubber
Mixed Viscosity11,000 cps400 cps3,000 cps
Pot Life5 minutes13 seconds25 minutes
Cure Time45 minutes10 minutes24 hours
Shore A Hardness2248
Specific Gravity1.08 g/cc0.128 g/cc1.14 g/cc
ColorTranslucent GreenTanWhite
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® FoamFormlastic™ 48
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Rubber
Mixed Viscosity11,000 cps400 cps3,000 cps
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight100A:118B
Pot Life5 minutes13 seconds25 minutes
Tack Free Time2 minutes
Cure Time45 minutes10 minutes24 hours
Shore A Hardness2248
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.14 g/cc
Specific Volume25.6 cu. in./lb.24.3 cu. in./lb.
ColorTranslucent GreenTanWhite
Die B Tear Strength102 pli98 pli
Tensile Strength490 psi>700 psi
Elongation @ Break450 %1,250 %
100% Modulus49 psi111 psi
Shrinkage<.001 in. / in.<0.001 in. / in.
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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Formlastic™ 48

Formlastic™ 48 urethane is a durable mold rubber made for production casting of concrete. It features a low viscosity for easy mixing and pouring and cures with minimal bubble entrapment. Mix ratio is 1A:1B by volume, pot life is 25 minutes and the rubber cures with an ultimate Shore hardness of Shore 48A. Cured rubber is dimensionally stable (low shrinkage), offers good wear resistance and will render color accurate concrete castings.
IMPORTANT: This product does not contain crystalline silica.

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Select a Material from a Category Below

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