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PMC®-744

PMC®-744 vs. EZ-Spray® Silicone 22EZ-Spray® Silicone 22

Polyurethane Rubber Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Rubber
Mixed Viscosity11,000 cps3,400 cps
Pot Life5 minutes15 minutes
Cure Time45 minutes16 hours
Shore A Hardness2244
ColorTranslucent GreenBeige
Tensile Strength490 psi300 psi
100% Modulus49 psi90 psi
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 22PMC®-744
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Rubber
Mixed Viscosity11,000 cps3,400 cps
Mix Ratio By Volume1A:1B2A:1B
Mix Ratio By Weight2A:1B
Pot Life5 minutes15 minutes
Cure Time45 minutes16 hours
Shore A Hardness2244
Specific Gravity1.08 g/cc1.01 g/cc
Specific Volume25.6 cu. in./lb.27.5 cu. in./lb.
ColorTranslucent GreenBeige
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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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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