Smooth-On EpoxAcast 690 Gallon Kit

$119.99
Article number: 66E690B
Availability: In stock (4)

EpoxAcast® 690 is a UV resistant clear casting epoxy resin that is ideal for making clear jewelry/beads or replacement lenses for kit cars and other applications requiring a rigid, clear finished product. EpoxAcast® 690 can be colored with SO-Strong® color tints.

EpoxAcast® 690 is also suitable for making clear molds and prototype parts. Castings cure with negligible shrinkage and are very hard and strong. EpoxAcast® 690 is also suitable for encapsulation applications for electronic assemblies where component identification is necessary.  Recommended casting thickness maximum; 2 in. / 5 cm.

  • Mix Ratio By Weight 100A : 30B
  • Mixed Viscosity - CPS. (ASTM D2393) 200
  • Specific Gravity - Mixed; g./c.c. (ASTM D1475) 1.10
  • Spec. Volume - Mixed; cu. in./lb. (ASTM D792) 25
  • Pot Life - (ASTM D2471)T 5 Hours
  • Cure Time 24 Hours Color - Mixed Clear
  • Shore D Hardness (ASTM D2240) 80
  • Ultimate Tensile - P.S.I. (ASTM D638) 6,630
  • Tensile Modulus - P.S.I. (ASTM D638) 572,000
  • Tensile Elongation (ASTM D638) 1.8
  • Flexural Strength - P.S.I. (ASTM D790) 10,980
  • Flexural Modulus - P.S.I. (ASTM D790) 410,000
  • Compressive Strength - P.S.I. (ASTM D695) 9,610
  • Shrinkage - in./in. (ASTM D-2566) 0.002
  • Compressive Modulus - P.S.I. (ASTM D695) 91,300
  • Heat Deflection Temp. (ASTM D648) 115°F/46°C
  • Index Of Refraction 1.565 at 68°F/20°C
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