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PMC®-724

PMC®-724 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 cps4,000 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)
Pot Life5 minutes20 minutes
Cure Time45 minutes16 hours
Shore A Hardness2240
Specific Volume25.6 cu. in./lb.20.1 cu. in./lb.
ColorTranslucent GreenOff-White
100% Modulus49 psi80 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®-724
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Rubber
Mixed Viscosity11,000 cps4,000 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight10A:100B
Pot Life5 minutes20 minutes
Cure Time45 minutes16 hours
Shore A Hardness2240
Specific Gravity1.08 g/cc1.38 g/cc
Specific Volume25.6 cu. in./lb.20.1 cu. in./lb.
ColorTranslucent GreenOff-White
Die B Tear Strength102 pli
Die C Tear Strength90 pli
Tensile Strength490 psi600 psi
Elongation @ Break450 %>700 %
100% Modulus49 psi80 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®-724

Used by artists and industry the world over for a variety of design, casting and special effects applications, PMC®-724 is by far the most versatile urethane rubber compound available on the market today. It is inexpensive, mixes and pours easily, and will cure to a durable rubber with negligible shrinkage. Low viscosity ensures flawless pick-up of even the finest detail with minimal bubble entrapment.

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