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PC-3®

EZ-Spray® Silicone 22 vs. EZ-Spray® 45 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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EZ-Spray® 45

EZ-Spray® Silicone 22 vs. EZ-Spray® 45 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Sprayable Urethane Rubber Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPasteSprayable
Pot Life5 minutes20 minutes20 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2245
Specific Volume25.6 cu. in./lb.20 cu. in./lb.27 cu. in./lb.
ColorTranslucent GreenBlackLight Blue
Tensile Strength490 psi3,000 psi510 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® 45
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPasteSprayable
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B
Pot Life5 minutes20 minutes20 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2245
Specific Gravity1.08 g/cc1.4 g/cc1.025 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.27 cu. in./lb.
ColorTranslucent GreenBlackLight Blue
Die B Tear Strength102 pli
Die C Tear Strength100 pli
Tensile Strength490 psi3,000 psi510 psi
Elongation @ Break450 %375 %
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® 45

EZ~Spray® 45 is a polyurethane rubber for spraying through the EZ~Spray® Junior Cartridge System. Refer to EZ~Spray® Junior manual prior to spraying this product. EZ~Spray® 45 can be sprayed onto vertical surfaces for making molds or is good for making fast molds of large surface areas. After a suitable thickness is attained, EZ~Spray® 45 cures overnight with negligible shrinkage to a durable mold rubber. Application of a support shell is achieved by spraying Smooth-On’s EZ~Spray® Plastic over the rubber mold after it has fully cured. EZ~Spray® 45 is suitable for casting a variety of materials including wax, gypsum, urethane or epoxy resins, concrete, etc.

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Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Urethane Rubber ›

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