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PC-3®

Mold Max™ STROKE vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22

Laboratory Tabletop Epoxy Adhesive

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Mold Max™ STROKE

Mold Max™ STROKE vs. EZ-Spray® Silicone 22 vs. PC-3®EZ-Spray® Silicone 22 versus PC-3®

Brushable Silicone Mold Rubber

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Tin Cure
Mixed Viscosity11,000 cpsPasteBrushable
Mix Ratio By Volume1A:1B1A:1BN/A (gram scale required)
Pot Life5 minutes20 minutes30 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2230
Specific Volume25.6 cu. in./lb.20 cu. in./lb.23.5 cu. in./lb.
ColorTranslucent GreenBlackWhite
Tensile Strength490 psi3,000 psi577 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®Mold Max™ STROKE
Product Type
  • Silicone Rubber - Platinum Cure
  • Adhesives
  • Silicone Rubber - Tin Cure
Mixed Viscosity11,000 cpsPasteBrushable
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:10B
Pot Life5 minutes20 minutes30 minutes
Thin Film Recoat Time60 minutes
Cure Time45 minutes24 hours16 hours
Barcol 935 Hardness75
Shore A Hardness2230
Specific Gravity1.08 g/cc1.4 g/cc1.18 g/cc
Specific Volume25.6 cu. in./lb.20 cu. in./lb.23.5 cu. in./lb.
ColorTranslucent GreenBlackWhite
Die B Tear Strength102 pli125 pli
Tensile Strength490 psi3,000 psi577 psi
Elongation @ Break450 %300 %
100% Modulus49 psi
Flexural Strength5,000 psi
Shrinkage<.001 in. / in.0.003 in. / in.0.002 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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Mold Max™ STROKE

Mold Max™ STROKE is a brushable tin silicone rubber that self-thickens for making fast brush-on molds of almost any model. Properly applied, it will hold a vertical surface and will reproduce the finest detail. Mixed 100A:10B by weight, rubber quickly develops thixotropy and can be applied with a brush or spatula. Working time is 30 minutes, re-coat time is 45 minutes and cure time after the final layer has been applied is 16 hours at room temperature.

Mold Max™ STROKE silicone will not stick to most surfaces and will cure with negligible shrinkage to a strong, flexible Shore 30A rubber. 4 thin layers is all that is necessary to make a strong and durable production mold for casting wax, gypsum, concrete or resins (urethane, polyester, etc.). Applications include reproducing sculpture, architectural restoration, candle molds, etc.

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