Smooth Cast 61D

SKU: 799293

Size: Gallon Kit


Unit Size Net Weight
Gallon Kit 17 lb
Five Gallon Kit 85 lb



Smooth-Castª 61D is a new low-cost, mercury free semiÐrigid urethane casting resin that cures quickly to semi-rigid hardness that offers excellent impact resistance. Applications include: making high-impact resistance tools, prototypes, abrasion resistant parts, foundry patterns, roller facings, vibration pads, fast concrete stamping pads, etc.
Technical Properties
Mix Ratio by Weight 100A:93B
Mix Ratio by Volume 1A:1B
Pot Life 7 minutes
Cure Time 60 minutes
Color Translucent White
Shore Hardness 61D
Mixed Viscosity 430 cps
Shrinkage 0.012 in./in.
Specific Volume 26.4 cu. in./lb.
Specific Gravity 1.05g/cc
Tensile Strength 2,420 psi
Elongation @ Break 100%


These plastics are easy-to-use (mix ratio is 1A:1B by volume) and have low viscosities for minimal bubble entrapment. Vibrant colors are possible by adding SO-Strong and UVO Color tints. Smooth Cast 61D is virtually unbreakable and will really take a beating and offers exceptional abrasion resistance. Shore Hardness: 61D

How do I remove release agent from my cured urethane casting if I want to prime or paint the casting?
Removing a silicone-based release agent from your cured urethane casting is not easy. The most effective way is to sand blast or bead blast the surface of your casting. However, sand blasting removes a micro thin layer of the casting's surface. If not done properly, you can damage or remove fine detail. Soap Wipe or brush the casting with a soap that has high alkali content. Cascade brand dishwashing gel is highly alkaline and also contains baking soda, which is an advantage. Solvents Wipe or brush the casting with Acetone, Toluene, Isopropyl Alcohol or Mineral Spirits.
Important: follow all safety precautions when using flammable liquids. You can then prime and paint your casting.
Special Order Items
The products listed below are currently SPECIAL ORDER items and require pre order.
Lead times may vary - For more information please contact our staff.

799296 - Smooth Cast 61D - Five Gallon Kit
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