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PC-3®

EZ-Spray® Silicone 22 vs. EZ-Spray® Foam vs. PC-3®EZ-Spray® Silicone 22 versus EZ-Spray® Foam

Laboratory Tabletop Epoxy Adhesive

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Adhesives
Mixed Viscosity11,000 cps400 cpsPaste
Pot Life5 minutes13 seconds20 minutes
Cure Time45 minutes10 minutes24 hours
Barcol 935 Hardness75
Shore A Hardness22
Specific Gravity1.08 g/cc0.128 g/cc1.4 g/cc
ColorTranslucent GreenTanBlack
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® FoamPC-3®
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Adhesives
Mixed Viscosity11,000 cps400 cpsPaste
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life5 minutes13 seconds20 minutes
Tack Free Time2 minutes
Cure Time45 minutes10 minutes24 hours
Barcol 935 Hardness75
Shore A Hardness22
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.4 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.
ColorTranslucent GreenTanBlack
Die B Tear Strength102 pli
Tensile Strength490 psi3,000 psi
Elongation @ Break450 %
100% Modulus49 psi
Flexural Strength5,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °F
Compressive Yield Strength5,000 psi

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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PC-3®

Smooth-On PC-3® Laboratory Table Top Cement is a two-component, black epoxy resin compound designed to join, bond and caulk sections of laboratory counters and tables. This epoxy resin cement is heavily filled and will adhere to vertical surfaces without sagging. It cures at room temperature with extremely low shrinkage.

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