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TASK™ 18

Econ™ 80 vs. TASK™ 18

Aluminum Filled Urethane Resin With Very High Compressive Strength

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Econ™ 80

Econ™ 80 vs. TASK™ 18TASK™ 18

Lower Cost Shore 80A Urethane Rubber

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Key Differences

Product Type
  • Urethane Resins
  • Urethane Rubber
Mixed Viscosity4,400 cps1,200 cps
Mix Ratio By VolumeN/A (gram scale required)1A:1B
Pot Life20 minutes13 minutes
Cure Time16 hours24 hours
Shore D Hardness88
Shore A Hardness80
Specific Volume17.6 cu. in./lb.26.16 cu. in./lb.
ColorMetal GrayTranslucent
Tensile Strength3,250 psi955 psi
Elongation @ Break1 %127 %
Shrinkage0.0006 in. / in.0.0014 in. / in.
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

TASK™ 18Econ™ 80
Product Type
  • Urethane Resins
  • Urethane Rubber
Mixed Viscosity4,400 cps1,200 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight26A:100B100A:90B
Pot Life20 minutes13 minutes
Handling Time6 hours
Cure Time16 hours24 hours
Shore D Hardness88
Shore A Hardness80
Specific Gravity1.57 g/cc1.06 g/cc
Specific Volume17.6 cu. in./lb.26.16 cu. in./lb.
ColorMetal GrayTranslucent
Die C Tear Strength77 pli
Tensile Strength3,250 psi955 psi
Tensile Modulus514,000 psi
Elongation @ Break1 %127 %
100% Modulus670 psi
Compressive Strength8,420 psi
Compressive Modulus97,300 psi
Flexural Strength10,700 psi
Flexural Modulus86,000 psi
Shrinkage0.0006 in. / in.0.0014 in. / in.
Heat Deflection Temp149 °F

Product Description

TASK™ 18

TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming or thermoforming molds.

When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns.

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Econ™ 80

Econ™ 80 is an economical Shore 80A urethane rubber suitable for a variety of mold making and industrial applications. It is a lower cost, faster cure alternative to our popular PMC™-780. Physical properties are lower vs. PMC™-780. This is a no odor system that features a 1A:1B mix ratio and a low viscosity for easy mixing and pouring. Working time is about 13 minutes at room temperature, handling time is 6 hours and rubber cures overnight. Econ™ 80 is translucent and easily colored with SO-Strong™ or Ignite™ colorants. Econ™ 80 is used to make short run molds for casting concrete and resins, concrete stamping pads, rubber mechanical parts, coating fabrics, pour-in-place gaskets for industrial equipment and burial vaults. Important: To minimize air bubbles in cured rubber, vacuum degassing is recommended.

FOR COMMERCIAL/INDUSTRIAL USE ONLY

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