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PC-3®

EZ-Spray® Silicone 22 vs. EZ-Spray® Silicone 35 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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EZ-Spray® Silicone 35

EZ-Spray® Silicone 22 vs. EZ-Spray® Silicone 35 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Sprayable Silicone Rubber Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Platinum Cure
Mixed Viscosity11,000 cpsPasteSprayable
Pot Life5 minutes20 minutes1.5 minutes
Cure Time45 minutes24 hours1 hour
Barcol 935 Hardness75
Shore A Hardness2235
Specific Volume25.6 cu. in./lb.20 cu. in./lb.24.1 cu. in./lb.
ColorTranslucent GreenBlackPurple
Tensile Strength490 psi3,000 psi490 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®EZ-Spray® Silicone 35
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Platinum Cure
Mixed Viscosity11,000 cpsPasteSprayable
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life5 minutes20 minutes1.5 minutes
Cure Time45 minutes24 hours1 hour
Barcol 935 Hardness75
Shore A Hardness2235
Specific Gravity1.08 g/cc1.4 g/cc1.15 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.24.1 cu. in./lb.
ColorTranslucent GreenBlackPurple
Die B Tear Strength102 pli92 pli
Tensile Strength490 psi3,000 psi490 psi
Elongation @ Break450 %415 %
100% Modulus49 psi
Flexural Strength5,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.<.001 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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EZ-Spray® Silicone 35

EZ~Spray® 35 is a platinum cure silicone rubber developed specifically for spraying through the EZ~Spray® Junior Cartridge System. With no or minimal surface preparation, EZ~Spray® 35 can be sprayed onto vertical surfaces for making fast rubber molds of large surface areas. After a suitable thickness is attained, EZ~Spray® 35 cures in 1 hour with negligible shrinkage to a durable mold rubber good for production casting resins, foams, concrete, plaster and other materials. Application of a support shell is achieved by spraying Smooth-On’s EZ~Spray® Plastic over the rubber mold after it has fully cured. Read the EZ~Spray® Junior manual prior to spraying.

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