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PC-3®

OOMOO™ 25 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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OOMOO™ 25

OOMOO™ 25 vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

No Scale or Vacuum Chamber Required

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Tin Cure
Mixed Viscosity11,000 cpsPaste4,250 cps
Pot Life5 minutes20 minutes15 minutes
Cure Time45 minutes24 hours75 minutes
Barcol 935 Hardness75
Shore A Hardness2225
Specific Volume25.6 cu. in./lb.20 cu. in./lb.20.6 cu. in./lb.
ColorTranslucent GreenBlackLight Blue
Tensile Strength490 psi3,000 psi240 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®OOMOO™ 25
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Tin Cure
Mixed Viscosity11,000 cpsPaste4,250 cps
Mix Ratio By Volume1A:1B1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:130B
Pot Life5 minutes20 minutes15 minutes
Cure Time45 minutes24 hours75 minutes
Barcol 935 Hardness75
Shore A Hardness2225
Specific Gravity1.08 g/cc1.4 g/cc1.34 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.20.6 cu. in./lb.
ColorTranslucent GreenBlackLight Blue
Die B Tear Strength102 pli40 pli
Tensile Strength490 psi3,000 psi240 psi
Elongation @ Break450 %250 %
100% Modulus49 psi100 psi
Flexural Strength5,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.0025 in. / in.
Useful Temperature (min)-65 °F-65 °F
Useful Temperature (max)500 °F400 °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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OOMOO™ 25

No Vacuuming – No Scale – Easy To Use . . . OOMOO™ 25 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary). It has a low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary. This product cures at room temperature with negligible shrinkage. OOMOO™ 25 has a 15-minute pot life and 75-minute cure time.

For The Novice Mold Maker - OOMOO™ silicones do not have great tear strength. They are good for making simple one or two-piece block molds. If you require a high tear strength silicone, Mold Max™ silicones are recommended.

OOMOO™ 25 is suitable for a variety of art-related and industrial applications including making one and two-piece block molds for sculpture and prototype reproduction, casting plaster, resins and wax. OOMOO™ silicones are also suitable for electrical potting and encapsulation applications.

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