Steatite Ceramic Bushings
Steatite (magnesium silicate) ceramic bushings used in low to medium voltage switchgear for conductor insulation through enclosure walls. Known for low electrical loss and high thermal stability up to 1000°C. Classified in 8546.20.00.90 as other ceramic electrical insulators.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for furnace or kiln electrical components
High-temperature ceramic labware classifies under 6909 regardless of electrical function.
If when functioning as insulating fittings for conductors
Insulating fittings of ceramics specifically for electrical conductors use 8547.20.
If precision-machined for valve/tap electrical isolation
Ceramic insulators in industrial valves may classify as tap/valve parts.
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Import Tips & Compliance
• Include specific gravity (2.7-2.9) and loss tangent (<0.006) test data for steatite verification
• Document IP rating (IP54 minimum) for enclosure applications
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