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PC-3®

EZ-Spray® Silicone 22 vs. PC-3® vs. Plasti-Paste™ EPOXYEZ-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 cpsPastePaste
Pot Life5 minutes20 minutes40 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore D Hardness80
Shore A Hardness22
Specific Volume25.6 cu. in./lb.20 cu. in./lb.27.73 cu. in./lb.
ColorTranslucent GreenBlackOff-White
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®Plasti-Paste™ EPOXY
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Epoxy Casting and Laminating Resins
Mixed Viscosity11,000 cpsPastePaste
Mix Ratio By Volume1A:1B1A:1B2A:1B
Mix Ratio By Weight1A:1B2A:1B
Pot Life5 minutes20 minutes40 minutes
Thin Film Recoat Time60 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore D Hardness80
Shore A Hardness22
Specific Gravity1.08 g/cc1.4 g/cc1.0 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.27.73 cu. in./lb.
ColorTranslucent GreenBlackOff-White
Die B Tear Strength102 pli
Tensile Strength490 psi3,000 psi
Tensile Modulus470,000 psi
Ultimate Tensile3,320 psi
Elongation @ Break450 %0.83 %
100% Modulus49 psi
Compressive Strength7,700 psi
Compressive Modulus138,000 psi
Flexural Strength5,000 psi9,186 psi
Flexural Modulus2,273,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.001 in. / in.
Heat Deflection Temp160 °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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Plasti-Paste™ EPOXY

Plasti-Paste™ EPOXY is an epoxy-based version of Smooth-On’s popular urethane Plasti-Paste™ products. It is a two component, fiber-filled epoxy designed for vertical surface application. Part A is a paste and Part B is a liquid. Mix ratio is 2A: 1B by volume or weight. Pot life is 40 minutes and cure time is 16 hours at room temperature depending on mass. Applying heat can reduce cure time. Mixed material holds a vertical surface without sagging and cures very rigid and strong.

Liquid material can be colored with UVO™ colorants and cured epoxy can be sanded, machined and painted with acrylic enamel paints. This plastic can used as a support shell or mother mold material to reinforce rubber molds during casting. It can also be used for creating themed environments, creating art or special effects. This epoxy is also a powerful adhesive and can be used as a repair material for a variety of industrial applications.

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