● Good processability
● Good electrical insulation properties
● Good tracking & erosion resistance
● Good hydrophobicity and flame retardancy
Main Applications:
● Various composite insulators, lightning arresters, insulators and high- & low-voltage electrical fittings for electrical lines of railways and urban light rails.
● Type 1 is applicable to press molding, and Type 2 is applicable to injection molding.
Typical Data：
|
Properties |
Product Data |
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Standard Electrical Insulating Rubber |
General Purpose Electrical Insulating Rubber |
Common Electrical Insulating Rubber |
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NE-T-1 NE-T-1U |
NE-T-2 NE-T-2U |
NE-C-1 NE-C-1U |
NE-C-2 NE-C-2U |
NE-D-1 NE-D-1U |
NE-D-2 NE-D-2U |
NE-E-1 NE-E-1U |
NE-E-2 NE-E-2U |
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Appearance |
Product inherent color, no extraneous matter. |
Visual Inspection |
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Density, g/cm3 |
1.48～1.56 |
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Hardness, Shore A |
62±4 |
60±4 |
ASTM D2240 |
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Tensile Strength, MPa, ≥ |
4.5 |
4.0 |
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Elongation at Break, %, ≥ |
260 |
280 |
260 |
280 |
220 |
240 |
220 |
240 |
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Tension Set, %, ≤ |
2.0 |
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Tear Strength, Die C, kN/m, ≥ |
13.0 |
12.0 |
ASTM D624 |
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Volume Resistivity, Ω▪ cm, ≥ |
7×1014 |
5×1014 |
3×1014 |
1×1014 |
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Dielectric Strength, kV/mm, ≥ |
22 |
20 |
18 |
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Dielectric Loss , tg δ, ≤ |
3×10-2 |
6×10-2 |
7×10-2 |
IEC 60250 |
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Dielectric Constant |
3~4 |
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Tracking Resistance &Erosion resistance |
1A4.5 grade |
pass |
IEC 60587 |
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Erosion Depth, mm, ≤ |
2.5 |
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Flame Retardancy, 3mm |
V-0 |
IEC 60695-11-10 |
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● Physical data in the above table is for reference only.
● Vulcanization condition: 175℃* 5min.
● Ratio of curing agent liquid 2,5-Dimethyl-2,5-di(tert-butylperoxy) hexane: 0.4%.
●The supplied test report is obtained by the Quality Inspection Department with the curing conditions and testing method of the company; due to the difference of curing conditions and testing method, we can’t guarantee that both parties obtain the same testing result, and we suggest that users should use the test data obtained under their own testing conditions as the reference for service performance. All the above performance data and application recommendations are only a reference for use on the service performance of product, instead of a guarantee on the effectiveness or general applicability of our products under a certain application.
Related material download:
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Substances of Very High Concern Test(SVHC) for Electrical Insulating Rubber
ROHS and Other Restricted Substances Test for Electrical Insulating Rubber
Electrical Insulating Silicone Rubber-TDS
US California Proposition 65-Siliocne Rubber
Perfluoroalkyl and PFAS-Electrical Insulating Rubber
