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PMC™-121 30/WET

PMC™-121 30/WET vs. EZ-Spray™ Silicone 22

Easy To Use Urethane Rubber

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Key Differences

Product Type
  • Urethane Rubber
  • Silicone Rubber - Platinum Cure
Mixed Viscosity1,800 cps11,000 cps
Pot Life30 minutes5 minutes
Cure Time16 hours45 minutes
ColorClear AmberTranslucent Green
100% Modulus82 psi49 psi
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.

All Technical Data

PMC™-121 30/WETEZ-Spray™ Silicone 22
Product Type
  • Urethane Rubber
  • Silicone Rubber - Platinum Cure
Mixed Viscosity1,800 cps11,000 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life30 minutes5 minutes
Cure Time16 hours45 minutes
Shore A Hardness3022
Specific Gravity1.04 g/cc1.08 g/cc
Specific Volume26.7 cu. in./lb.25.6 cu. in./lb.
ColorClear AmberTranslucent Green
Die B Tear Strength102 pli
Die C Tear Strength75 pli
Tensile Strength400 psi490 psi
Elongation @ Break1,000 %450 %
100% Modulus82 psi49 psi
Shrinkage< .001 in. / in.<.001 in. / in.
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °F

Product Description

PMC™-121 30/WET

The PMC™-121 Series urethane rubbers feature convenient one-to-one by volume mix ratios. PMC™-121/30 Wet is exceptionally strong and abrasion resistant for soft urethane mold rubbers. It exudes oil that aids in demolding hard plasters and concrete.

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EZ-Spray™ Silicone 22

EZ~Spray™ Silicone 22 is a sprayable silicone which cure quickly to soft rubbers with high elongation and tear strength. 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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