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PC-3®

Plasti-Paste® vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Resins
Mixed Viscosity11,000 cpsPasteLight Paste
Pot Life5 minutes20 minutes10 minutes
Cure Time45 minutes24 hours90 minutes
Barcol 935 Hardness75
Shore D Hardness70
Shore A Hardness22
Specific Volume25.6 cu. in./lb.20 cu. in./lb.23.9 cu. in./lb.
ColorTranslucent GreenBlackOff White
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®Plasti-Paste®
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Urethane Resins
Mixed Viscosity11,000 cpsPasteLight Paste
Mix Ratio By Volume1A:1B1A:1B1A:3B
Mix Ratio By Weight1A:1B41A:100B
Pot Life5 minutes20 minutes10 minutes
Cure Time45 minutes24 hours90 minutes
Barcol 935 Hardness75
Shore D Hardness70
Shore A Hardness22
Specific Gravity1.08 g/cc1.4 g/cc1.16 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.23.9 cu. in./lb.
ColorTranslucent GreenBlackOff White
Die B Tear Strength102 pli
Tensile Strength490 psi3,000 psi
Tensile Modulus168,100 psi
Ultimate Tensile1,600 psi
Elongation @ Break450 %1.5 %
100% Modulus49 psi
Compressive Strength3,420 psi
Compressive Modulus48,800 psi
Flexural Strength5,000 psi3,410 psi
Flexural Modulus150,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.005 in. / in.
Heat Deflection Temp130 °F
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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Plasti-Paste®

Plasti-Paste® is a two component fiber resin that is designed for vertical surface application. Part A is a liquid and Part B is a paste. Mix ratio is 1A : 3B by volume (41A:100B by weight). It has no odor and pot life is 8 – 10 minutes depending on mass. Demold time (can be handled) is about 90 minutes depending on mass. Plasti-Paste® holds a vertical surface without sagging and cures to a strong, durable and lightweight plastic. Suitable as a mother mold / support shell (reinforces shape of rubber mold during casting). Can be pigmented with So-Strong® color tints from Smooth-On. Add cabosil or other filler as an extender or for special effects.

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Silicone Rubber - Tin Cure ›

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