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PC-3®

EZ-Spray® Silicone 22 vs. PC-3® vs. EpoxAcast™ 655 + 102 HardenerEZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Epoxy Casting and Laminating Resins
Mixed Viscosity11,000 cpsPaste23,000 cps
Mix Ratio By Volume1A:1B1A:1BN/A (gram scale required)
Pot Life5 minutes20 minutes75 minutes
Cure Time45 minutes24 hours9 hours
Barcol 935 Hardness75
Shore D Hardness90
Shore A Hardness22
Specific Volume25.6 cu. in./lb.20 cu. in./lb.16.7 cu. in./lb.
ColorTranslucent GreenBlackGrey
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 22PC-3®EpoxAcast™ 655 + 102 Hardener
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Epoxy Casting and Laminating Resins
Mixed Viscosity11,000 cpsPaste23,000 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:11B
Pot Life5 minutes20 minutes75 minutes
Cure Time45 minutes24 hours9 hours
Barcol 935 Hardness75
Shore D Hardness90
Shore A Hardness22
Specific Gravity1.08 g/cc1.4 g/cc1.66 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.16.7 cu. in./lb.
ColorTranslucent GreenBlackGrey
Die B Tear Strength102 pli
Tensile Strength490 psi3,000 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Elongation @ Break450 %
100% Modulus49 psi
Compressive Strength12,500 psi
Compressive Modulus125,500 psi
Flexural Strength5,000 psi7,660 psi
Flexural Modulus1,403,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.0006 in. / in.
Heat Deflection Temp135 °F
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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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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EpoxAcast™ 655 + 102 Hardener

EpoxAcast655 (formerly Metalset™ A-30) is a versatile aluminum filled castable epoxy that is very hard and strong. It is dimensionally stable, even when mass cast up to 512 in3 / 8,390 cm3.

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