Chapter 7002 — Customs Tariff Headings

Borosilicate Glass Balls for Laboratory Use

Borosilicate glass spheres, unworked, designed for melting into labware components like stirrers or valves. These are not microspheres and are used in laboratory applications. They are classified under tariff item 7002.10.00 as glass in balls, unworked.

Borosilicate Glass Spheres 2mm Diameter

Borosilicate glass spheres of 2 mm diameter, unworked and without any cutting, coating, or surface treatment. These balls are used in laboratory and medical applications where high-temperature resistance is required. They fall under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Colored Soda Glass Balls for Crafts

Colored soda-lime glass balls, unworked except for annealing, used for craft fusing and slumping. These are glass balls without cutting, coating, or other working. They fall under tariff item 7002.10.00 as glass in balls, unworked.

High-Density Glass Balls for Shot Blasting

High-density glass balls, unworked, serving as preforms for abrasive media in shot peening. These are glass balls without any working processes. They are classified under tariff item 7002.10.00 as glass in balls, unworked.

Industrial Filler Glass Balls 1.5mm

Industrial filler glass balls of 1.5 mm diameter, unworked and without coatings or surface treatments. These are used as fillers in composites and paints. They are classified under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Lead-Free Glass Balls for Decorative Molding

Lead-free clear glass balls, unworked, for hot molding into ornamental beads or sculptures. These are not lead crystal (PbO content below 24%). They fall under tariff item 7002.10.00 as glass in balls, unworked.

Lead-Free Glass Beads 6mm Diameter

Lead-free soda glass balls of exactly 6 mm diameter, unworked and without any cutting, coating, or annealing alterations. These are used for decorative and craft purposes. They fall under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Optical Flint Glass Balls Unworked

Optical flint glass spheres, unworked, for precision optics manufacturing prior to grinding into lenses. These are glass balls without any working. They are classified under tariff item 7002.10.00 as glass in balls, unworked.

Optical Glass Balls 5mm Unworked

Optical crown glass spheres of 5 mm diameter, unworked and prior to any grinding or polishing. These are used as preforms in lens manufacturing. They are classified under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Precision Glass Balls 5.5mm for Bearings

Precision glass spheres of 5.5 mm diameter, unworked and without polishing, cutting, or coatings. These are designed for use in precision instruments and low-friction bearings. They fall under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Quartz Glass Balls Unworked

Fused quartz glass balls, unworked, for optical and semiconductor applications prior to further processing. Fused quartz is considered glass per chapter note 5. They fall under tariff item 7002.10.00 as glass in balls, unworked.

Soda-Lime Glass Balls 3mm Unworked

Soda-lime glass balls of 3 mm diameter, unworked and without shaping or surface treatments. These are used as industrial fillers and abrasives. They are classified under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Unworked Glass Beads 4mm Diameter

Unworked glass beads of 4 mm diameter, used as raw material in jewelry making and decorative applications. These are glass balls without any cutting, coating, or surface treatment. They fall under tariff item 7002.10.00 as glass in balls, unworked, and are not microspheres of heading 70.18.

Unworked Soda-Lime Glass Balls

Spherical soda-lime glass balls, unworked except for annealing, used as precursors for manufacturing precision bearings and valves. These are glass balls without cutting, coating, or other working. They fall under tariff item 7002.10.00 as glass in balls, unworked.

Borosilicate Glass Rods Unworked

Unworked borosilicate glass rods, formed by drawing molten glass and annealed without further processing. These rods are in their raw state, not cut or shaped, and are classified as unworked glass rods.

Colored Soda Glass Rods Unworked

Unworked rods of colored soda-lime glass, incorporating metal oxides for tinting during melting, annealed without surface treatment. These rods are in their raw state and qualify as unworked glass rods.

Fused Quartz Aerospace Window Rod Stock

Unworked fused quartz rod stock used to fabricate windows and viewports for aerospace applications. The rod is in its basic drawn form, not yet cut, ground, or optically worked, and is classified under this tariff item as unworked glass rods.

Fused Quartz Fiber Drawing Rod

Unworked fused quartz rod used as preform material for drawing optical fibers. The rod is not yet drawn into fiber and is in its basic unworked state, fitting the scope of unworked glass rods.

Fused Quartz Optical Rod

High-purity fused quartz rod, unworked except for basic forming, used in optical systems and lasers. The rod is in its raw state, not yet shaped or polished, and qualifies as an unworked glass rod.

Fused Quartz Semiconductor Processing Rod

Cylindrical unworked rod of fused quartz used as stock for fabricating wafer boats and diffusion tubes in semiconductor manufacturing. The rod is in its basic drawn form, not further processed, and is classified as an unworked glass rod.

Fused Quartz UV Disinfection Rod

Unworked fused quartz rod stock for manufacturing UV germicidal lamps. The rod is in its raw state, not yet formed into lamp components, and is classified as an unworked glass rod.

Fused Silica Laboratory Stirring Rod

Straight unworked rod of fused silica used in chemical laboratories for mixing reagents. The rod is in its raw drawn state, not cut or polished, and is classified as an unworked glass rod.

Fused Silica Precision Metrology Rod

Ultra-stable unworked fused silica rod used as gauge blocks or reference standards in precision measurement. The rod is in its basic unworked form, not yet cut or ground, and qualifies as an unworked glass rod.

Fused Silica Thermocouple Protection Tube

Unworked tube-like rod of fused silica designed to sheath thermocouples in high-temperature furnaces. The rod is in its raw drawn state, not cut or processed, and is classified as an unworked glass rod or tube.

Heavy Wall Glass Rods Unworked

Unworked glass rods with heavy wall thickness from extrusion drawing, annealed for stress relief, used in chemical apparatus fabrication. The rods are in their raw state, not further processed, and are classified as unworked glass rods.

High-Purity Fused Silica Halogen Lamp Rod

Unworked rod of high-purity fused silica used to fabricate envelopes for halogen cycle lamps. The rod is in its basic drawn form, not yet shaped into lamp parts, and qualifies as an unworked glass rod.

Neutral Glass Rods for Pharmaceutical Tubing

Unworked neutral-type glass rods intended for drawing into pharmaceutical tubing, annealed post-forming with no additional working. These rods are in their raw state and qualify as unworked glass rods.

Optical Quality Flint Glass Rods Unworked

Unworked flint glass rods with high refractive index for optical applications, drawn and annealed without grinding or polishing. These rods are in their raw state and are classified as unworked glass rods.

Seamed Soda Glass Rods Unworked

Unworked seamed soda-lime glass rods, formed by drawing and annealed but not cut or surfaced. They retain a longitudinal seam from the manufacturing process and are used as feedstock for further processing, such as rod drawing or tube formation. Classified under tariff item 7002.20.00 as unworked glass rods.

Synthetic Fused Silica Crucible Rod

Rod stock of synthetic fused silica used to form electric melting crucibles for crystal growth. The rod is unworked, in its basic drawn form, and qualifies as an unworked glass rod.

Tubing Draw Stock Glass Rods

Unworked glass rods specifically manufactured as draw stock for producing capillary or pharmaceutical tubing. These rods are annealed and seamed, and have not undergone any working processes beyond initial forming. They are classified under tariff item 7002.20.00 as unworked rods, distinct from finished tubes.

Unworked Soda-Lime Glass Rods

Cylindrical soda-lime glass rods that are unworked, having undergone only basic forming and annealing. They have not been cut, ground, polished, or otherwise processed, making them suitable for further manufacturing. Classified under tariff item 7002.20.00 as unworked glass rods.

Fused Quartz Optical Fiber Drawing Tubes

Fused quartz optical fiber drawing tubes are precision unworked tubes made of fused silica, used in the production of optical fibers. Their high clarity and low impurity levels are essential for maintaining signal integrity during fiber drawing. They fall under tariff item 7002.31.00 as unworked tubes of fused quartz or other fused silica.

Fused Quartz Semiconductor Processing Tubes

Fused quartz semiconductor processing tubes are long, unworked tubes used in diffusion furnaces and CVD reactors. Their extreme purity prevents contamination during high-temperature wafer processing. These tubes are classified under 7002.31.00 as unworked tubes of fused quartz.

Fused Quartz Solar Simulator Tubes

Fused quartz solar simulator tubes are unworked fused silica tubes used as test chambers for photovoltaic cell evaluation. They maintain high solar transmission down to 200nm due to their purity. These tubes fall under 7002.31.00 as unworked tubes of fused quartz.

Fused Quartz Tubing for Laboratory Reactors

Fused quartz tubing for laboratory reactors consists of unworked tubes made from fused quartz or fused silica, supplied in straight lengths without further processing. These tubes are essential components in laboratory equipment such as reactors. They are classified under 7002.31.00 as unworked tubes of fused quartz.

Fused Silica Capillary Tubes

Fused silica capillary tubes are thin-walled, unworked tubes used in gas chromatography and analytical instruments. They maintain optical clarity and purity essential for precise measurements. These tubes fall under 7002.31.00 as unworked tubes of fused quartz.

Fused Silica Investment Casting Shell Tubes

Fused silica investment casting shell tubes are unworked fused quartz tubes used as drain and vent lines in ceramic shell investment casting molds. Their high-temperature stability prevents shell cracking during casting. These tubes are classified under 7002.31.00 as unworked tubes of fused quartz.

Fused Silica Lamp Tubing

Fused silica lamp tubing is unworked tubing of synthetic fused quartz used for high-intensity discharge lamps and UV lamps. It provides an envelope material that transmits UV while containing high pressures. These tubes fall under 7002.31.00 as unworked tubes of fused quartz.

Fused Silica Pharmaceutical Drying Tubes

Fused silica pharmaceutical drying tubes are unworked tubes of fused quartz used in freeze-drying equipment for pharmaceutical lyophilization. Their inertness prevents product-glass interactions during sublimation. These tubes are classified under 7002.31.00 as unworked tubes of fused quartz.

Fused Silica Thermocouple Protection Tubes

Fused silica thermocouple protection tubes are unworked protective tubes for thermocouples in high-temperature environments. Made from pure fused quartz, they withstand molten glass contact without devitrification. These tubes fall under 7002.31.00 as unworked tubes of fused quartz.

Synthetic Fused Quartz Process Gas Tubes

Synthetic fused quartz process gas tubes are unworked synthetic fused silica tubes used for delivering process gases in semiconductor and solar cell manufacturing. Flame-polished ends are acceptable if performed before annealing per chapter notes. These tubes are classified under 7002.31.00 as unworked tubes of fused quartz.

Borosilicate Condensate Trap Tubes

Unworked borosilicate glass tubes designed for cold traps in vacuum distillation systems. Their low linear coefficient of expansion (≤5 x 10⁻⁶/K from 0°C to 300°C) ensures resistance to thermal shock during repeated cycling. These tubes are classified under tariff item 7002.32.00 as unworked glass tubes of low-expansion glass.

Borosilicate Glass Capillary Tubes

Thin-walled, unworked borosilicate capillary tubes with a low expansion coefficient, used in chromatography, medical diagnostics, and precision instrumentation. They meet the tariff item's requirement of a linear coefficient of expansion not exceeding 5 x 10⁻⁶/K within 0°C to 300°C. These tubes are imported in their raw state before any drawing or processing.

Borosilicate Glass Laboratory Tubing

Unworked borosilicate glass tubing with a low linear coefficient of expansion (≤5 x 10⁻⁶/K from 0-300°C), used for fabricating laboratory equipment like test tubes and reaction vessels. The tubing is imported in long lengths without any working or finishing processes. It falls under tariff item 7002.32.00 as unworked tubes of low-expansion glass.

Borosilicate Glass Tubes for Fiber Optic Preforms

Unworked low-expansion glass tubes used as overcladding in fiber optic preform manufacturing for telecommunications cables. These borosilicate tubes have a linear coefficient of expansion not exceeding 5 x 10⁻⁶/K within 0°C to 300°C. They are imported in their raw tube form without any working or processing.

Glass Tubes for High-Temperature Manometers

Borosilicate tubing with low thermal expansion for precision pressure gauges operating at elevated temperatures. These unworked tubes are designed for high-temperature manometers and meet the tariff item's coefficient of expansion requirement. They are imported in raw tube form without any working.

Low-Expansion Glass Rods for Laser Housings

Solid borosilicate rods for thermal mounts in high-power laser systems where dimensional stability is critical. These unworked rods have a low linear coefficient of expansion (≤5 x 10⁻⁶/K) and are imported in their raw state. They fall under tariff item 7002.32.00 as unworked rods of low-expansion glass.

Low-Expansion Glass Rods for Optical Seals

Unworked borosilicate rods designed for hermetic sealing with optical fibers and metal in photonics devices. These rods have a low coefficient of expansion (≤5 x 10⁻⁶/K) and are imported in raw form. They are classified under tariff item 7002.32.00 as unworked rods of low-expansion glass.

Low-Expansion Glass Tubes for Vacuum Systems

Unworked glass tubes of low thermal expansion borosilicate for high-vacuum applications like vacuum manifolds and seals in scientific equipment. These tubes meet the tariff item's requirement of a linear coefficient of expansion not exceeding 5 x 10⁻⁶/K. They are imported in raw tube form without any working.

Pyrex-Type Borosilicate Glass Rods

Unworked solid glass rods made from borosilicate with controlled low thermal expansion (≤5 x 10⁻⁶/K), ideal for stirring rods, thermometer tubes, and scientific instrument components. These rods are imported in their raw state without any working or finishing. They fall under tariff item 7002.32.00 as unworked rods of low-expansion glass.

Thermometer Glass Tubing

Specialty unworked borosilicate tubing with precise bore and low thermal expansion for manufacturing mercury-free thermometers and temperature probes. These tubes meet the tariff item's coefficient of expansion requirement and are imported in raw tube form. They are classified under tariff item 7002.32.00 as unworked tubes of low-expansion glass.

Aquarium Air Pump Tubing Glass

Thin-wall soda glass tubing, 5mm outer diameter, for aquarium air pump silencers and diffusers, unworked. These tubes are classified under tariff item 7002.39.00 as other unworked glass tubes, as they have not been processed beyond drawing.

Borosilicate Capillary Glass Tubes

Borosilicate capillary glass tubes with very small inner diameters, unworked and supplied for medical and analytical applications. They are classified under this tariff item as other unworked glass tubes, before any sealing, calibration, or further processing.

Borosilicate Capillary Tubes 50mm

Precision borosilicate glass capillary tubes, 50mm in length, unworked and intended for medical and scientific applications such as blood sampling. These tubes are classified under tariff item 7002.39.00 as other unworked glass tubes, as they have not undergone any processing beyond drawing.

Borosilicate Glass Test Tubes

Borosilicate glass test tubes, unworked and used in laboratory settings for experiments and sample containment. They are classified under this tariff item as other unworked glass tubes, without any drawn, blown, or further processed features.

Borosilicate Glass Test Tubes 100mm

Unworked borosilicate glass test tubes, 100mm in length, used in laboratory settings for chemical experiments and sample containment. These tubes are classified under tariff item 7002.39.00 as other unworked glass tubes, as they have not been processed beyond the initial drawing stage.

Borosilicate Glass Tubing 10mm OD

Unworked borosilicate glass tubing with 10mm outer diameter, supplied in straight lengths without any drawing, cutting to final shape, or annealing post-processing. These tubes are classified under tariff item 7002.39.00 as other unworked glass tubes.

Borosilicate Round Glass Tubing 10mm OD

Standard 10mm outer diameter borosilicate unworked glass tubing, stocked for general fabrication. It is classified under this tariff item as other unworked glass tubes, suitable for prototyping, aquariums, and custom glasswork.