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General Purpose Epoxy Casting Compound
Polycast 266 is an easy to use epoxy casting/potting compound exhibiting excellent adhesion to metals, ceramics and most plastics. When properly cured with Polycure 67, Polycast 266 will conform to the requirements of MIL-I-16923, Types B, C & D, and will not support fungus growth.
| Color | Black/White/Grey Dk. Brown |
|
| Viscosity, cps. | 80,000 400 |
ASTMD2393 |
| Specific Gravity | 1.59 1.0 |
|
| Mix Ratio (By Weight) | 100:14 | |
| Mixed Viscosity, cps. | 25,000-60,000 | ASTMD2393 |
| Pot Life @ 72o F, hours | 5 | |
| Shelf Life @ 72o F, months | 12 12 |
| Hardness Durometer (Shore D) | 89 | ASTMD 2240 |
| Tensile Strength, psi | 10,500 | ASTMD 638 |
| Tensile Elongation, % | 2-4 | ASTMD 638 |
| Compressive Strength, psi | 24,000 | ASTMD 695 |
| Flexural Strength, psi | 24,000 | ASTMD 790 |
| Coefficient of Thermal Expansion | 40 x 10-6 | |
| Shrinkage on Cure | 0.002 | |
| Service Temperature (°C) | -55 - 155 | |
| Dielectric Strength, volts/mil | 440 | ASTMD 149 |
| Dielectric Constant, 60 Hz | 4.8 | ASTMD 150 |
| Dissipation Factor, 60 Hz | 0.01 | ASTMD 150 |
| Volume Resistivity, ohm-cm | 5.0 x 1016 | |
| Thermal Conductivity, BTU's | 4.7 |
Room Temp. - 24 hrs.
2 hours at 100o C
1 hour at 125o
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