Compare Tool

remove

Ecoflex™ 5

Ecoflex™ 5 vs. Smooth-Cast® 310 vs. Shell Shock® SLOW

Super-Soft, Addition Cure Silicone Rubber

 View Product

Vs.
remove

Smooth-Cast® 310

Ecoflex™ 5 vs. Smooth-Cast® 310 vs. Shell Shock® SLOWEcoflex™ 5

Bright White, Ultra Low Viscosity Liquid Plastics

 View Product

Vs.

Add Material to Compare

start over

Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps80 cps3,000 cps
Pot Life1 minute20 minutes8 minutes
Cure Time5 minutes4 hours5 hours
Shore D Hardness7085
Shore A Hardness5
Specific Volume25.8 cu. in./lb.26.4 cu. in./lb.17.3 cu. in./lb.
ColorTranslucentWhiteBeige
Tensile Strength350 psi3,000 psi3,100 psi
Elongation @ Break1,000 %7.5 %0.4 %
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® 310Shell Shock® SLOW
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
  • Urethane Resins
Mixed Viscosity13,000 cps80 cps3,000 cps
Mix Ratio By Volume1A:1B1A:1B1A:4B
Mix Ratio By Weight1A:1B100A:90B1A:5B
Pot Life1 minute20 minutes8 minutes
Cure Time5 minutes4 hours5 hours
Shore D Hardness7085
Shore A Hardness5
Specific Gravity1.07 g/cc1.05 g/cc1.60 g/cc
Specific Volume25.8 cu. in./lb.26.4 cu. in./lb.17.3 cu. in./lb.
ColorTranslucentWhiteBeige
Die B Tear Strength75 pli
Tensile Strength350 psi3,000 psi3,100 psi
Tensile Modulus134,000 psi435,000 psi
Elongation @ Break1,000 %7.5 %0.4 %
100% Modulus15 psi
Compressive Strength3,800 psi9,000 psi
Compressive Modulus44,900 psi500,000 psi
Flexural Strength4,000 psi7,150 psi
Flexural Modulus118,000 psi980,000 psi
Shrinkage<.001 in. / in.0.0065 in. / in.0.0006 in. / in.
Heat Deflection Temp120 °F135 °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

Smooth-Cast® 310

The Smooth-Cast® 300 Series of liquid plastics are ultra-low viscosity casting resins that yield castings that are bright white and virtually bubble free. Vacuum degassing is not necessary. They offer the convenience of a 1A:1B by volume or 100A:90B by weight mix ratio. The differences between them are pot life and demold time.

These resins readily accept fillers (such as URE-FIL® 3 from Smooth-On) and can be colored with SO-Strong® or Ignite® color tints (Smooth-Cast® 325 series accepts pigments better than the Smooth Cast® 300 series). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast® 300 Series Liquid Plastics include reproducing small to medium size sculptures, making prototype models, special effect props and decorative jewelry.

Read More

Shell Shock® SLOW

Shell Shock® SLOW is a thixotropic plastic that self thickens when mixed and can be brushed onto a variety of surfaces or into rubber molds. When Parts A and B are mixed in proper proportion (1A:4B by volume or 1A:5B by weight), material cures at room temperature with virtually no shrinkage to a hard, durable plastic that exhibits good compressive and flexural strength. Fully cured castings are rigid and can be sanded, primed and painted. Color effects are possible by adding SO-Strong Color Tints.

Shell Shock® plastics are ideal for making fast, lightweight rigid molds for creating silicone appliances and effects (use as a replacement for ‘stone molds’). You can also brush a “gel coat” into a rubber mold and back it up with rigid foam, creating a highly detailed lightweight casting. These products can also be brushed onto styrofoam (polystyrol) as an impact resistant coating that can be sanded, primed and painted (minimum 3 coats recommended). Shell Shock® plastics can also be used to make rigid support shells for brush on rubber molds.

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 ›