Kraft Insulation is produced in multi-layer form on a modified wet machine from an electrical grade, unbleached Kraft wood pulp. The dry finished sheets contain no sizing, coloring or other materials, which would contaminate natural or synthetic impregnating oils.
Kraft Insulation is used for transformer layer insulation, capacitor can liner and in many other applications where the ultimate in electrical and physical strengths are required.
PHYSICAL, ELECTRICAL AND CHEMICAL PROPERTIES: |
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| Fiber Content | 100% Unbleached Kraft Wood Pulp | ||||||||||||||||
| Ash Content (Max.) | .75% | ||||||||||||||||
| pH Water Extract | 6.0 - 7.5 | ||||||||||||||||
| Moisture Content | 7.0% Avg. | ||||||||||||||||
| Chlorides | 8 - 16 ppm | ||||||||||||||||
| Water Extract Conductivity Microhms/cm | 7.5 Avg. | ||||||||||||||||
| Standard Thickness, ± 7% | Inches | .007 | .010 | .015 | .020 | .025 | .031 | .040 | |||||||||
| Apparent Density, (Air Dry), ± 7% | g/cc | 1.00 | 1.00 | 1.05 | 1.05 | 1.05 | 1.05 | 1.05 | |||||||||
| Weight, (Air Dry), ± 7% | lbs./sq. ft. | .036 | .052 | .078 | .109 | .136 | .169 | .216 | |||||||||
| Tensile Strength, (Avg.) | MD lbs./In. | 135 | 195 | 340 | 500 | 575 | 700 | 800 | |||||||||
| CMD lbs./In. | 25 | 50 | 75 | 85 | 115 | 140 | 160 | ||||||||||
| Burst Strength, (Avg.) | lbs./sq. in. | 120 | 185 | 320 | 440 | 510 | 580 | 625 | |||||||||
| Tear Strength, (Avg.) grams | MD | 180 | 270 | 475 | 650 | 875 | 1000 | ||||||||||
| CMD | 300 | 450 | 800 | 975 | 1100 | 1200 | |||||||||||
| Dielectric Strength, (Avg.) grams AC, 25°C (Avg.) | volts/mil | 250 | 250 | 250 | 250 | 250 | 250 | 250 | |||||||||
This information is furnished as a guide for selecting materials. Atlantic Gasket disclaims liability for results or use of this information. It is the customer’s responsibility to obtain and test samples when determining suitability of material for a particular application.
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