Lab Muffle Furnace Refractory Door
Fiber-insulated refractory door assembly for laboratory muffle furnaces used in ash content determination and small-scale calcining. Part of electric laboratory furnaces under HTS 8514.90.8000 for heat treatment. Features interlocking design for heat retention.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing >50% alumina refractories
Refractory bricks under Chapter 69 by material composition.
If industrial oven parts generally
Other industrial furnaces under 8417 exclude electric/induction types.
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Import Tips & Compliance
• Thermal shock resistance certification essential
• Door alignment tolerances specified
• Fiber density and classification data required
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