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PC-3®

Smooth-Cast® 326 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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Smooth-Cast® 326

Smooth-Cast® 326 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Ultra Low Viscosity Liquid Plastics

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Resins
Mixed Viscosity11,000 cpsPaste100 cps
Pot Life5 minutes20 minutes9 minutes
Cure Time45 minutes24 hours60 minutes
Barcol 935 Hardness75
Shore D Hardness72
Shore A Hardness22
Specific Volume25.6 cu. in./lb.20 cu. in./lb.25.9 cu. in./lb.
ColorTranslucent GreenBlackClear Amber
Tensile Strength490 psi3,000 psi3,170 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 22PC-3®Smooth-Cast® 326
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Resins
Mixed Viscosity11,000 cpsPaste100 cps
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B115A:100B
Pot Life5 minutes20 minutes9 minutes
Cure Time45 minutes24 hours60 minutes
Barcol 935 Hardness75
Shore D Hardness72
Shore A Hardness22
Specific Gravity1.08 g/cc1.4 g/cc1.07 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.25.9 cu. in./lb.
ColorTranslucent GreenBlackClear Amber
Die B Tear Strength102 pli
Tensile Strength490 psi3,000 psi3,170 psi
Tensile Modulus140,000 psi
Elongation @ Break450 %10 %
100% Modulus49 psi
Compressive Strength3,080 psi
Compressive Modulus32,200 psi
Flexural Strength5,000 psi3,100 psi
Flexural Modulus95,700 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.0075 in. / in.
Heat Deflection Temp120 °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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Smooth-Cast® 326

The Smooth-Cast® 325, 326 & 327 ColorMatch® Series plastics are fast-cast resins that were developed specifically for adding color pigments and fillers to achieve true color representation or filler effect. The ColorMatch® Series is formulated “color neutral”. Small amounts of pigment will yield accurate, vivid colors from cured castings using So-Strong® tints or Ignite® color pigments. The ColorMatch® Series offers the convenience of a 1A: 1B mix ratio by volume and has a very low viscosity. Demold times range from about 10 minutes to 2-4 hours (depending on product, mass and mold configuration). Note: Large mass castings will get very hot and shrink more, depending on mold configuration.

The ColorMatch® Series also readily accept fillers (such as URE-FIL® 3 from Smooth-On). Applications for the ColorMatch® Series plastics include making pigmented prototype models or figures, special effect props, reproducing small to medium size sculptures, decorative jewelry, etc.

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Silicone Rubber - Tin Cure ›

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