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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity11,000 cps400 cpsLight Paste
Pot Life5 minutes13 seconds20 minutes
Cure Time45 minutes10 minutes16 hours
Barcol 935 Hardness87
Shore D Hardness85
Shore A Hardness22
Specific Gravity1.08 g/cc0.128 g/cc1.43 g/cc
ColorTranslucent GreenTanWhite
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 22EZ-Spray® FoamEpoxAcoat™ WHITE
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed Viscosity11,000 cps400 cpsLight Paste
Mix Ratio By Volume1A:1B1A:1B5A:1B
Mix Ratio By Weight100A:15B
Pot Life5 minutes13 seconds20 minutes
Thin Film Working Time40 minutes
Thin Film Recoat Time60 minutes
Tack Free Time2 minutes4 hours
Cure Time45 minutes10 minutes16 hours
Barcol 935 Hardness87
Shore D Hardness85
Shore A Hardness22
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.43 g/cc
Specific Volume25.6 cu. in./lb.19.4 cu. in./lb.
ColorTranslucent GreenTanWhite
Die B Tear Strength102 pli
Tensile Strength490 psi
Ultimate Tensile26,000 psi
Elongation @ Break450 %
100% Modulus49 psi
Compressive Strength24,000 psi
Flexural Strength30,000 psi
Shrinkage<.001 in. / in.0.00015 in. / in.
Heat Deflection Temp133 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °F

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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EZ-Spray® Foam

EZ~Spray® Foam is a polyurethane foam compound that can be conveniently sprayed using Smooth-On’s EZ~Spray® Junior System. Foam cures quickly to strong, lightweight and impact resistant 8 lb. rigid foam that can be used for a variety of applications including making lightweight castings. Foam can also be sprayed over certain rubber mold configurations as a mother mold material. For more information, refer to SmoothOn’s EZ~Spray® Junior manual and video.

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EpoxAcoat™ WHITE

EpoxAcoat™ RED, EpoxAcoat™ GREY and EpoxAcoat™ WHITE are thixotropic epoxy gel coats which are widely used for hand laminating and tooling applications. They are tough and strong surface coat resins which cure at room temperature and offer exceptional abrasion resistance. For high temperature applications (to 284°F / 140°C) use EpoxAcoat HT™ (see separate technical bulletin).

EpoxAcoat™ RED, EpoxAcoat™ GREY and EpoxAcoat™ WHITE are easy to use, wet out well over a variety of surfaces and will coat vertical surfaces without sagging. After the epoxy becomes “tacky-hard” at room temperature, fiberglass cloth is laminated behind the surface coat using Free Form™ AIR putty or EpoxAmite™ Laminating Epoxy to produce strong, lightweight tools that have excellent dimensional stability and surface finish. Cured surface machines precisely without chipping. Applications include precision tooling, master and pattern making, core boxes and fixtures.

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Silicone Rubber - Tin Cure ›

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Urethane Resins ›

Epoxy Casting and Laminating Resins ›

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Epoxy and Urethane Coatings ›

Mix and Pour Expanding Foams ›

Adhesives ›

Lifecasting Materials ›

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Polymer Modifiers for Concrete and Gypsum ›