Other
Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes); parts thereof: > Parts: > Of cathode-ray tubes: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8540.91.50.00
CRT Bulb Spacer Ring
Precision ceramic ring that maintains exact spacing between CRT funnel and front panel during assembly bonding. Thermal expansion matched to glass. Other parts 8540.91.50.00.
CRT Internal Magnetic Shielding Foil
Mu-metal foil liner applied inside CRT funnel to shield electron beams from external magnetic interference. Precision cut for specific tube geometry. Other parts HTS 8540.91.50.00.
Electron Gun Cathode Heater Assembly
Tungsten filament heater coil assembly that thermionically emits electrons from cathode in CRT electron guns. Oxide-coated for longevity. 8540.91.50.00 classification.
CRT Convergence Purify Magnet Assembly
Adjustable permanent magnet ring assembly mounted on CRT neck for electron beam convergence and purity correction during setup. Neodymium composition. Other CRT parts.
CRT Socket Base for Electron Gun
Ceramic/phenolic socket with high-voltage pins that electrically connects the electron gun to the CRT neck power leads. Precision molded for vacuum sealing. Other CRT parts per 8540.91.50.00.
Picture Tube Base Glass Seal
Fused glass-to-metal seal that hermetically connects the CRT base pins to the glass envelope while maintaining vacuum integrity. Custom frit composition for thermal matching. Classified 8540.91.50.00.
Sony Trinitron CRT Neck Assembly
The neck assembly for Sony Trinitron cathode-ray tubes contains the electron gun structure that generates and accelerates electron beams for phosphor excitation on the screen. It is a replacement part specifically designed for incorporation into vintage television and monitor CRTs. Classified under 8540.91.50.00 as 'other' parts of cathode-ray tubes, excluding front panel assemblies.
Electron Gun Subassembly for CRT
This subassembly includes cathodes, control grids, and focusing electrodes that form the core of the electron gun in cathode-ray tubes. It is machined and assembled for direct installation into oscilloscope or display CRTs. Falls under HTS 8540.91.50.00 as other CRT parts not specified as front panel assemblies.
CRT Shadow Mask Frame Assembly
A precision metal frame holding the shadow mask that aligns electron beams with color phosphors in color CRTs. Designed for installation during CRT manufacturing, separate from the glass front panel. Classified in 8540.91.50.00 as other parts of cathode-ray tubes.
Focusing Anode Ring for Picture Tube
High-voltage anode ring that electrostatically focuses electron beams in television picture tube CRTs. Constructed from conductive metal with specific curvature for beam collimation. HTS 8540.91.50.00 covers this as other CRT part.
CRT Deflection Yoke Mounting Bracket
Stamped steel bracket that precisely positions the deflection yoke coil assembly around the CRT neck for scan control. Engineered for thermal expansion matching with glass bulb. Other CRT parts under 8540.91.50.00.
Monochrome CRT Phosphor Screen Backplate
Glass backplate with imprinted phosphor layer for monochrome cathode-ray tubes used in medical X-ray viewers. Excludes front panel per U.S. note definitions. Classified as other CRT parts in 8540.91.50.00.
High-Voltage Implosion Protection Band
Steel tension band with adhesive lining that prevents glass implosion in high-voltage CRT operation. Applied around bulb equator during manufacturing. HTS 8540.91.50.00 other parts.
Gettering Ring for CRT Vacuum Processing
Barium flash getter ring that activates during CRT evacuation to absorb residual gases maintaining high vacuum. Positioned on CRT base pins. HTS 8540.91.50.00.