CRT Neck Extender Sleeve
Precision glass or ceramic sleeve extending CRT neck for custom electron gun positioning in specialized applications. HTS 8540.99.8000 for other tube structural parts. Used in medical and scientific CRTs.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If glass tubes for CRT necks
Unprocessed glass tubing classified under Chapter 70 heading 7002.
If ceramic tubes/insulators
Ceramic neck extenders as electrical insulators under heading 6909.
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Import Tips & Compliance
• Thermal expansion coefficient matching documentation essential
• Vacuum seal test certificates (10^-8 torr) required
• Specify frit sealing surface finish specifications
Related Products under HTS 8540.99.80.00
Electron Gun Subassembly for TV CRT
Modular electron gun subassembly for television cathode-ray tubes, including cathodes, grids, and focusing electrodes. HTS 8540.99.8000 covers this as 'other' CRT parts essential for beam formation and deflection. Used in restoration of classic CRT televisions.
Phosphor Coated CRT Implosion Band
Steel band with phosphor coating applied for edge lighting in CRTs, providing structural integrity against implosion while contributing to screen glow. HTS 8540.99.8000 for other CRT parts combining mechanical and phosphor functions. Used in large-screen televisions.
Monochrome CRT Anode Cap Assembly
High-voltage anode cap with resistor and spring contact for monochrome cathode-ray tubes in oscilloscopes and instruments. Classified HTS 8540.99.8000 as other CRT parts handling high-voltage connections. Prevents arcing in high-precision applications.
Gettering Ring Assembly for CRT
Barium gettering ring assembly that activates during CRT sealing to absorb residual gases, maintaining vacuum integrity. Falls under HTS 8540.99.8000 as essential 'other' CRT parts for tube life extension. Used in all vacuum tube manufacturing.
CRT Purity Glass Sample Disc
Small glass disc with phosphor coating used during CRT manufacturing to check glass purity and contamination levels. HTS 8540.99.8000 for specialized test parts of cathode-ray tubes. Quality control essential for production lines.
High-Voltage CRT Bleeder Resistor
Specialized 10MΩ bleeder resistor mounted internally in CRTs to safely discharge high-voltage anode after power-off. Classified HTS 8540.99.8000 as integral CRT safety parts. Prevents electrical shock during service.