Compare Tool

remove

Ecoflex™ 5

Ecoflex™ 5 vs. Smooth-Cast® ONYX™ FAST vs. UreCoat®

Super-Soft, Addition Cure Silicone Rubber

 View Product

Vs. Vs.
remove

UreCoat®

Ecoflex™ 5 vs. Smooth-Cast® ONYX™ FAST vs. UreCoat®Ecoflex™ 5 versus Smooth-Cast® ONYX™ FAST

Flexible urethane coating

 View Product

Add Material to Compare

start over

Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Rubber
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps100 cps3,800 cps
Mix Ratio By Volume1A:1B100A:100BN/A (gram scale required)
Pot Life1 minute2.5 minutes8 minutes
Cure Time5 minutes15 minutes16 hours
Shore D Hardness80
Shore A Hardness570
ColorTranslucentBlackTranslucent Amber
Tensile Strength350 psi5,840 psi1,360 psi
Elongation @ Break1,000 %4 %876 %
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

Ecoflex™ 5Smooth-Cast® ONYX™ FASTUreCoat®
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Rubber
  • Epoxy and Urethane Coatings
Mixed Viscosity13,000 cps100 cps3,800 cps
Mix Ratio By Volume1A:1B100A:100B
Mix Ratio By Weight1A:1B120A:100B100A:10B
Pot Life1 minute2.5 minutes8 minutes
Thin Film Recoat Time30 minutes
Cure Time5 minutes15 minutes16 hours
Shore D Hardness80
Shore A Hardness570
Specific Gravity1.07 g/cc1.09 g/cc1.05 g/cc
Specific Volume25.8 cu. in./lb.27.7 cu. in./lb.26.4 cu. in./lb.
ColorTranslucentBlackTranslucent Amber
Die B Tear Strength75 pli
Die C Tear Strength256 pli
Tensile Strength350 psi5,840 psi1,360 psi
Tensile Modulus246,000 psi
Elongation @ Break1,000 %4 %876 %
100% Modulus15 psi503 psi
Compressive Strength8,760 psi
Compressive Modulus77,400 psi
Flexural Strength8,280 psi
Flexural Modulus246,000 psi
Shrinkage<.001 in. / in.0.010 in. / in.
Useful Temperature (min)-65 °F
Useful Temperature (max)450 °F
Heat Deflection With Post Cure250 °F

Product Description

Ecoflex™ 5

Ecoflex™ rubbers are platinum-catalyzed silicones that are versatile and easy to use. Ecoflex™ rubbers are mixed 1A:1B by weight or volume and cured at room temperature with negligible shrinkage.  Low viscosity ensures easy mixing and de-airing. Dispense using our convenient dispensing cartridges. Cured rubber is very soft, very strong and very “stretchy”, stretching many times its original size without tearing and will rebound to its original form without distortion.

Read More

Smooth-Cast® ONYX™ FAST

Smooth-Cast® ONYX™ is a mercury-free urethane resin that cures at room temperature to a deep black, solid plastic. ONYX™ resins offer the convenience of a 1A:1B by volume mix ratio and have very low viscosities, so they are easy to mix and pour. ONYX™ resins have an ultimate Shore hardness of 80D and offer higher physical properties and higher heat resistance vs. other general purpose resins.ONYX™ FAST resin has a pot life of 2.5 minutes and a cure time of 10-15 minutes. ONYX™ FAST is a good choice for creating fast cold cast bronze, brass, copper, nickel/silver, etc. effects.

Read More

UreCoat®

UreCoat® is a two component urethane (A+B) that can be mixed and brushed onto a variety of surfaces to provide a flexible, tough and impact resistant coating. Mix ratio is 100A:10B by weight (gram scale required), pot life is 8 minutes, re-coat time is 30 minutes, tack free time is 2 hours and full cure is 16 hours at 73°F/23°C. UreCoat® contains no phthalates or VOC's.

Read More

Select a Material from a Category Below

Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Urethane Rubber ›

Polysulfide Rubber ›

Urethane Resins ›

Epoxy Casting and Laminating Resins ›

Epoxy Putties ›

Epoxy and Urethane Coatings ›

Mix and Pour Expanding Foams ›

Adhesives ›

Lifecasting Materials ›

Skin Safe FX Materials ›

Polymer Modifiers for Concrete and Gypsum ›