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Rulon Bearings

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DuPont™ Nomex® Type 993, 120 mil Nominal Thickness Medium-Density Aromatic Nylon Pressboard
Categories: Polymer; Thermoplastic; Nylon (Polyamide PA); Nylon, Aromatic
Material Notes: Type 993 is a medium-density pressboard which offers a balance of rigidity and conformability along with outstanding saturability and excellent properties in air and oil. Typical applications include 3-dimensional parts such as V-rings, angle rings and spools, as well as barrier, gap spacers and core tubes.
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Physical PropertiesOriginal ValueComments
Density 0.820 g/ccCalculated number using basis weight and thickness
Thickness 3000 micronsASTM D374, method D, using 17 N/cm²
Linear Mold Shrinkage 0.0070 cm/cmASTM D3392
 0.012 cm/cmASTM D3392
Linear Mold Shrinkage, Transverse 0.010 cm/cmASTM D3392
 0.018 cm/cmASTM D3392
 
Mechanical PropertiesOriginal ValueComments
Film Tensile Strength at Yield, MD 46.0 MPaASTM D828
Film Tensile Strength at Yield, TD 39.2 MPaASTM D828
Film Elongation at Yield, MD 13.7 %ASTM D828
Film Elongation at Yield, TD 14.2 %ASTM D828
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+15 ohm-cm
@Temperature 220 °C		ASTM D257
 1.00e+17 ohm-cm
@Temperature 150 °C		ASTM D257
 1.00e+17 ohm-cm
@Temperature 130 °C		in oil; ASTM D257
 1.00e+18 ohm-cm
@Temperature 50.0 °C		ASTM D257
 1.00e+18 ohm-cm
@Temperature 100 °C		ASTM D257
 1.00e+18 ohm-cm
@Temperature 90.0 °C		in oil; ASTM D257
 1.00e+19 ohm-cm
@Temperature 23.0 °C		ASTM D257
Surface Resistivity per Square 1.00e+15 ohm
@Temperature 220 °C		ASTM D257
 1.00e+16 ohm
@Temperature 150 °C		ASTM D257
 1.00e+17 ohm
@Temperature 23.0 °C		ASTM D257
 1.00e+17 ohm
@Temperature 50.0 °C		ASTM D257
 1.00e+17 ohm
@Temperature 100 °C		ASTM D257
Dielectric Constant 2.6
@Frequency 60 Hz,
Temperature 23.0 °C		ASTM D150
 2.6
@Frequency 60 Hz,
Temperature 50.0 °C		ASTM D150
 2.7
@Frequency 60 Hz,
Temperature 100 °C		ASTM D150
 2.8
@Frequency 60 Hz,
Temperature 150 °C		ASTM D150
 2.9
@Frequency 60 Hz,
Temperature 220 °C		ASTM D150
 3.5
@Frequency 60 Hz,
Temperature 25.0 °C		in oil; ASTM D150
 3.5
@Frequency 60 Hz,
Temperature 90.0 °C		in oil; ASTM D150
 3.7
@Frequency 60 Hz,
Temperature 130 °C		in oil; ASTM D150
Dielectric Strength 20.0 kV/mmAC rapid rise in air; ASTM D149
 30.0 kV/mmAC rapid rise in oil; ASTM D149
 62.0 kV/mmFull wave impulse in oil; ASTM D3426
Dissipation Factor 0.0050
@Frequency 60 Hz,
Temperature 100 °C		ASTM D150
 0.0050
@Frequency 60 Hz,
Temperature 90.0 °C		in oil; ASTM D150
 0.0060
@Frequency 60 Hz,
Temperature 150 °C		ASTM D150
 0.0060
@Frequency 60 Hz,
Temperature 25.0 °C		in oil; ASTM D150
 0.0070
@Frequency 60 Hz,
Temperature 130 °C		in oil; ASTM D150
 0.012
@Frequency 60 Hz,
Temperature 220 °C		ASTM D150
 0.012
@Frequency 60 Hz,
Temperature 50.0 °C		ASTM D150
 0.015
@Frequency 60 Hz,
Temperature 23.0 °C		ASTM D150
 
Thermal PropertiesOriginal ValueComments
Oxygen Index 20.8 %
@Temperature 230 °C		Flammability threshold; ASTM D2863
 23 %
@Temperature 180 °C		ASTM D2863
 25 %
@Temperature 150 °C		ASTM D2863
 30 %
@Temperature 60.0 °C		ASTM D2863
 32 %
@Temperature 25.0 °C		ASTM D2863
 
Descriptive Properties
Basis Weight (g/m²)ASTM D3392

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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