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PC-3®

PMC®-724 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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PMC®-724

PMC®-724 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Polyurethane Rubber Compound

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPaste4,000 cps
Mix Ratio By Volume1A:1B1A:1BN/A (gram scale required)
Pot Life5 minutes20 minutes20 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2240
Specific Volume25.6 cu. in./lb.20 cu. in./lb.20.1 cu. in./lb.
ColorTranslucent GreenBlackOff-White
Tensile Strength490 psi3,000 psi600 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®PMC®-724
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Rubber
Mixed Viscosity11,000 cpsPaste4,000 cps
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B10A:100B
Pot Life5 minutes20 minutes20 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2240
Specific Gravity1.08 g/cc1.4 g/cc1.38 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.20.1 cu. in./lb.
ColorTranslucent GreenBlackOff-White
Die B Tear Strength102 pli
Die C Tear Strength90 pli
Tensile Strength490 psi3,000 psi600 psi
Elongation @ Break450 %>700 %
100% Modulus49 psi80 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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PMC®-724

Used by artists and industry the world over for a variety of design, casting and special effects applications, PMC®-724 is by far the most versatile urethane rubber compound available on the market today. It is inexpensive, mixes and pours easily, and will cure to a durable rubber with negligible shrinkage. Low viscosity ensures flawless pick-up of even the finest detail with minimal bubble entrapment.

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Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Urethane Rubber ›

Polysulfide Rubber ›

Urethane Resins ›

Epoxy Casting and Laminating Resins ›

Epoxy Putties ›

Epoxy and Urethane Coatings ›

Mix and Pour Expanding Foams ›

Adhesives ›

Lifecasting Materials ›

Skin Safe FX Materials ›

Polymer Modifiers for Concrete and Gypsum ›