Silicon Nitride Thermowell from Germany
A silicon nitride ceramic thermowell protecting temperature sensors in petrochemical furnaces. This refractory tube/sheath is fired per Chapter 69 requirements and falls under tariff item 6903.90.00.
Duty Rate — Germany → Canada
0%
Import Tips
• Verify the thermowell is fired above 800°C to qualify as a ceramic product
• Describe the silicon nitride composition and high-corrosion environment use
• Avoid classification as a sensor or electrical part under other chapters