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Epsilon™ PRO

EZ-Spray® Silicone 22 vs. EZ-Spray® Foam vs. Epsilon™ PROEZ-Spray® Silicone 22 versus EZ-Spray® Foam

High Performance Impact Resistant EPS Foam Coating

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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Epoxy and Urethane Coatings
Mixed Viscosity11,000 cps400 cps4,000 cps
Pot Life5 minutes13 seconds22 minutes
Cure Time45 minutes10 minutes16 hours
Shore D Hardness65
Shore A Hardness22
Specific Gravity1.08 g/cc0.128 g/cc1.11 g/cc
ColorTranslucent GreenTanClear Amber
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® FoamEpsilon™ PRO
Product Type
  • Silicone Rubber - Platinum Cure
  • Mix and Pour Expanding Foams
  • Epoxy and Urethane Coatings
Mixed Viscosity11,000 cps400 cps4,000 cps
Mix Ratio By Volume1A:1B1A:1B2A:1B
Mix Ratio By Weight100A:44B
Pot Life5 minutes13 seconds22 minutes
Thin Film Working Time35 minutes
Thin Film Recoat Time3 hours
Tack Free Time2 minutes
Cure Time45 minutes10 minutes16 hours
Shore D Hardness65
Shore A Hardness22
Expansion (approximate)7 times
Specific Gravity1.08 g/cc0.128 g/cc1.11 g/cc
Specific Volume25.6 cu. in./lb.25.0 cu. in./lb.
ColorTranslucent GreenTanClear Amber
Die B Tear Strength102 pli
Tensile Strength490 psi
Elongation @ Break450 %
100% Modulus49 psi
Shrinkage<.001 in. / in.
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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Epsilon™ PRO

Epsilon™ PRO is a thixotropic epoxy coating that self-thickens for brushing onto a variety of surfaces.  Compared to original Epsilon™, Epsilon™ PRO offers a longer working time and cured epoxy is semi-rigid, offering better impact resistance.  Mix ratio for Epsilon™ PRO is 2A:1B by volume (100A:44B by weight).  A gram scale is not needed to use this product.

Applied in thin layers, mixed material holds a vertical surface without sagging or slumping. Material wets out uniformly over different surfaces.  Pot life is 22 minutes, with a re-coat time of 3 hours.  All layers should be allowed to cure for 16 hours at 73° F / 23° C and can be accelerated with mild heat.  Epsilon™ PRO is clear and can be easily colored using Ignite™ or UVO™ colorants.  Cured coating has a gloss finish and can be sanded, primed and painted.

Applications: Epsilon™ PRO is suitable for use as a protective, impact resistant coating for EPS or polyurethane foam. It can also be applied to plaster, concrete, wood and fabrics. This product is not sensitive to moisture / humidity and contains no VOC’s. 

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