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PC-3®

Econ® 80 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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Econ® 80

Econ® 80 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Lower Cost Shore 80A Urethane Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPaste1,200 cps
Pot Life5 minutes20 minutes13 minutes
Cure Time45 minutes24 hours24 hours
Barcol 935 Hardness75
Shore A Hardness2280
Specific Volume25.6 cu. in./lb.20 cu. in./lb.26.16 cu. in./lb.
ColorTranslucent GreenBlackTranslucent
Tensile Strength490 psi3,000 psi955 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®Econ® 80
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPaste1,200 cps
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:90B
Pot Life5 minutes20 minutes13 minutes
Cure Time45 minutes24 hours24 hours
Barcol 935 Hardness75
Shore A Hardness2280
Specific Gravity1.08 g/cc1.4 g/cc1.06 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.26.16 cu. in./lb.
ColorTranslucent GreenBlackTranslucent
Die B Tear Strength102 pli
Die C Tear Strength77 pli
Tensile Strength490 psi3,000 psi955 psi
Elongation @ Break450 %127 %
100% Modulus49 psi670 psi
Flexural Strength5,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.0014 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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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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Econ® 80

Econ® 80 is an economical Shore 80A urethane rubber suitable for a variety of mold making and industrial applications. It is a lower cost, faster cure alternative to our popular PMC®-780. Physical properties are lower vs. PMC®-780. This is a no odor system that features a 1A:1B mix ratio and a low viscosity for easy mixing and pouring. Working time is about 13 minutes at room temperature, handling time is 6 hours and rubber cures overnight. Econ® 80 is translucent and easily colored with SO-Strong® or Ignite® colorants. Econ® 80 is used to make short run molds for casting concrete and resins, concrete stamping pads, rubber mechanical parts, coating fabrics, pour-in-place gaskets for industrial equipment and burial vaults. Important: To minimize air bubbles in cured rubber, vacuum degassing is recommended.

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