Compare Tool

remove

Simpact™ 60A

Smooth‑Sil™ 950 vs. Simpact™ 60A

Tough, Fast Setting Urethane

 View Product

Vs.
remove

Smooth‑Sil™ 950

Smooth‑Sil™ 950 vs. Simpact™ 60ASimpact™ 60A

Addition Cure Silicone Rubber Compounds

 View Product

Add Material to Compare

start over

Key Differences

Product Type
  • Urethane Rubber
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
Mixed Viscosity1,100 cps35,000 cps
Mix Ratio By Volume1A:1BN/A (gram scale required)
Pot Life4 minutes45 minutes
Cure Time48 hours18 hours
Shore A Hardness6050
ColorWhiteBlue
Tensile Strength990 psi725 psi
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.

All Technical Data

Simpact™ 60ASmooth‑Sil™ 950
Product Type
  • Urethane Rubber
  • Urethane Resins
  • Silicone Rubber - Platinum Cure
Mixed Viscosity1,100 cps35,000 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:94B100A:10B
Pot Life4 minutes45 minutes
Handling Time2 hours
Cure Time48 hours18 hours
Shore A Hardness6050
Specific Gravity1.08 g/cc1.24 g/cc
Specific Volume25.7 cu. in./lb.22.3 cu. in./lb.
ColorWhiteBlue
Die B Tear Strength155 pli
Die C Tear Strength142 pli
Tensile Strength990 psi725 psi
Elongation @ Break400 %320 %
100% Modulus312 psi272 psi
Shrinkage<.007 in. / in.<.001 in. / in.
Useful Temperature (min)-65 °F
Useful Temperature (max)450 °F
Thermal Conductivity0.261 W/M*K

Product Description

Simpact™ 60A

Simpact™ 60A urethane is a low odor, fast-setting urethane elastomer which offers very high tear strength, impact resistance and wear resistance. Simpact™ urethanes are phthalate free, mercury free and MOCA free. Simpact™ urethanes pour easily. Working time is 4 minutes, handling time is 2 hours and full cure time is 48 hours at room temperature.

Cured rubber has exceptional performance characteristics and dimensional stability. Simpact™ urethanes can be colored with SO-Strong™, UVO™ or Ignite™ colorants. Simpact™ urethanes are suitable for making impact resistant props, prototypes and display pieces.

This material may congeal if exposed to cold temperatures. To reconstitute, Part A & B must be heated to 90°F (33°C) then thoroughly mixed to an even consistency.

Click here for more Simpact™ products.

Read More

Smooth‑Sil™ 950

Smooth-On Smooth-Sil™ Platinum Silicones cure at room temperature with negligible shrinkage. With different hardnesses to choose from, Smooth-Sil™ products offer tremendous versatility and are suitable for making production molds of any configuration, large or small. These silicones exhibit good chemical, abrasion and heat resistance. Materials such as plasters, concrete, wax, low-melt metal alloys or resins (urethane, epoxy or polyester) can then be cast into these silicone rubbers without a release agent.

Smooth-Sil™ Platinum Silicones are used for rapid prototyping, wax casting (foundries and candle makers), architectural restoration and for casting concrete. Smooth-Sil™ 950 is suitable for food related applications. 

Click here for more Smooth-Sil™ silicone products.

Read More

Select a Material from a Category Below

Silicone Rubber - Tin Cure ›

Silicone Rubber - Platinum Cure ›

Silicone Expanding Foams - Platinum Cure ›

Urethane Rubber ›

Polysulfide Rubber ›

Urethane Resins ›

Urethane Expanding Foams ›

Epoxy Casting and Laminating Resins ›

Epoxy Putties ›

Epoxy and Urethane Coatings ›

Flame Rated Materials ›

Adhesives ›

Lifecasting Materials ›

Skin Safe FX Materials ›

Polymer Modifiers for Concrete and Gypsum ›