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PMC®-121 30/DRY

PMC®-121 30/DRY vs. EZ-Spray® Silicone 22EZ-Spray® Silicone 22

Easy To Use Urethane Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Rubber
Mixed Viscosity11,000 cps1,800 cps
Pot Life5 minutes30 minutes
Cure Time45 minutes16 hours
ColorTranslucent GreenClear Amber
100% Modulus49 psi82 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®-121 30/DRY
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Rubber
Mixed Viscosity11,000 cps1,800 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life5 minutes30 minutes
Cure Time45 minutes16 hours
Shore A Hardness2230
Specific Gravity1.08 g/cc1.04 g/cc
Specific Volume25.6 cu. in./lb.26.7 cu. in./lb.
ColorTranslucent GreenClear Amber
Die B Tear Strength102 pli
Die C Tear Strength75 pli
Tensile Strength490 psi400 psi
Elongation @ Break450 %1,000 %
100% Modulus49 psi82 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®-121 30/DRY

The PMC®-121 Series urethane rubbers feature convenient one-to-one by volume mix ratios. PMC®-121/30 Dry is exceptionally strong and abrasion resistant for soft urethane mold rubbers. It does not exude oil and can be used for casting waxes, Smooth-On liquid plastics, gypsum plasters and other materials.

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