Compare Tool

remove

Ecoflex™ 5

Ecoflex™ 5 vs. Brush-On® 50 vs. EpoxAcast™ 650 + 102 Hardener

Super-Soft, Addition Cure Silicone Rubber

 View Product

Vs.
remove

EpoxAcast™ 650 + 102 Hardener

Ecoflex™ 5 vs. Brush-On® 50 vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5

Mineral Filled General Purpose Casting Epoxy

 View Product

Vs.
remove

Brush-On® 50

Ecoflex™ 5 vs. Brush-On® 50 vs. EpoxAcast™ 650 + 102 HardenerEcoflex™ 5 versus EpoxAcast™ 650 + 102 Hardener

"Brushable" Polyurethane Rubber Compound

 View Product

Add Material to Compare

start over

Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
Mixed Viscosity13,000 cps7,000 cpsBrushable
Mix Ratio By Volume1A:1BN/A (gram scale required)1A:1B
Pot Life1 minute90 minutes20 minutes
Cure Time5 minutes4 hours16 hours
Barcol 935 Hardness93
Shore A Hardness550
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.23.7 cu. in./lb.
ColorTranslucentOff WhiteOff 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

Ecoflex™ 5EpoxAcast™ 650 + 102 HardenerBrush-On® 50
Product Type
  • Silicone Rubber - Platinum Cure
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
Mixed Viscosity13,000 cps7,000 cpsBrushable
Mix Ratio By Volume1A:1B1A:1B
Mix Ratio By Weight1A:1B100A:13B100A:125B
Pot Life1 minute90 minutes20 minutes
Cure Time5 minutes4 hours16 hours
Barcol 935 Hardness93
Shore A Hardness550
Specific Gravity1.07 g/cc1.52 g/cc1.17 g/cc
Specific Volume25.8 cu. in./lb.18.22 cu. in./lb.23.7 cu. in./lb.
ColorTranslucentOff WhiteOff White
Die B Tear Strength75 pli
Die C Tear Strength80 pli
Tensile Strength350 psi500 psi
Tensile Modulus1,503,000 psi
Ultimate Tensile6,000 psi
Elongation @ Break1,000 %400 %
100% Modulus15 psi
Compressive Strength16,350 psi
Compressive Modulus142,600 psi
Flexural Strength5,890 psi
Flexural Modulus710,000 psi
Shrinkage<.001 in. / in.0.001 in. / in.<.001 in. / in.
Heat Deflection Temp129 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)450 °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

EpoxAcast™ 650 + 102 Hardener

EpoxAcast™ 650 is a mineral filled general purpose casting epoxy that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment.

Read More

Brush-On® 50

Smooth-On’s Brush-On® Series of mold rubbers are extremely versatile and are famous for their abrasion resistance and high tear strength. They have the convenience of a one-to-one mix ratio and are easy to mix and apply with a brush or spatula.

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 ›