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PMC®-744

PMC®-744 vs. EZ-Spray® Silicone 22 vs. EZ-Spray® FoamEZ-Spray® Silicone 22 versus EZ-Spray® Foam

Polyurethane Rubber Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Rubber
Mixed Viscosity11,000 cps400 cps3,400 cps
Pot Life5 minutes13 seconds15 minutes
Cure Time45 minutes10 minutes16 hours
Shore A Hardness2244
Specific Gravity1.08 g/cc0.128 g/cc1.01 g/cc
ColorTranslucent GreenTanBeige
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® FoamPMC®-744
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Urethane Rubber
Mixed Viscosity11,000 cps400 cps3,400 cps
Mix Ratio By Volume1A:1B1A:1B2A:1B
Mix Ratio By Weight2A:1B
Pot Life5 minutes13 seconds15 minutes
Tack Free Time2 minutes
Cure Time45 minutes10 minutes16 hours
Shore A Hardness2244
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.01 g/cc
Specific Volume25.6 cu. in./lb.27.5 cu. in./lb.
ColorTranslucent GreenTanBeige
Die B Tear Strength102 pli
Die C Tear Strength90 pli
Tensile Strength490 psi300 psi
Elongation @ Break450 %400 %
100% Modulus49 psi90 psi
Shrinkage<.001 in. / in.< .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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PMC®-744

PMC®-744 has been used for years by mold making professionals to cast plaster, concrete, resins, etc. It is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail reproduction.

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Select a Material from a Category Below

Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Urethane Rubber ›

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Urethane Resins ›

Epoxy Casting and Laminating Resins ›

Epoxy Putties ›

Epoxy and Urethane Coatings ›

Mix and Pour Expanding Foams ›

Adhesives ›

Lifecasting Materials ›

Skin Safe FX Materials ›

Polymer Modifiers for Concrete and Gypsum ›