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6903.90.00/Silicon Nitride Thermowell/Canada

Silicon Nitride Thermowell from Canada

Silicon nitride ceramic thermowell protecting temperature sensors in petrochemical furnaces. HTS 6903.90.00 refractory tubes/sheaths for high-corrosion environments. Advanced nitride ceramics fired per Chapter requirements.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Petrochemical end-use certification; prove >1400°C service temperature

• Avoid Chapter 85 sensor classification by importing separately