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. HTS 7002.32.00.00 covers these as unworked rods of low-expansion glass before any fabrication.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard soda-lime glass rods
Lacking the low-expansion coefficient specification, soda-lime rods classify under general glass rods/tubes.
If after grinding/polishing into finished lab rods
Surface-worked or shaped glass rods for laboratory use shift to laboratory, hygienic, or pharmaceutical glassware.
If impregnated or coated with ceramic or refractory materials
Treated rods with absorbent/reflecting layers or coatings move to Chapter 68 panels/boards/articles.
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Import Tips & Compliance
• Include material safety data sheets (MSDS) confirming borosilicate composition and expansion coefficient for smooth clearance
• Import in standard lengths to maintain 'unworked' status; custom-cut rods risk reclassification
• Avoid common error of declaring with end-use info that suggests finished products, triggering scrutiny
Related Products under HTS 7002.32.00.00
Borosilicate Glass Capillary Tubes
Thin-walled, unworked borosilicate capillary tubes with low expansion coefficient for chromatography, medical diagnostics, and precision instrumentation. HTS 7002.32.00.00 applies to these unprocessed tubes before drawing to final bore size.
Glass Tubes for High-Temperature Manometers
Borosilicate tubing with low thermal expansion for precision pressure gauges operating at elevated temperatures. Unworked status qualifies for 7002.32.00.00 classification.
Low-Expansion Glass Rods for Laser Housings
Solid borosilicate rods for thermal mounts in high-power laser systems where dimensional stability is critical. Classifies under 7002.32.00.00 as unworked low-expansion glass rods.
Borosilicate Condensate Trap Tubes
Unworked glass tubes for cold traps in vacuum distillation systems, leveraging low expansion for thermal cycling. HTS 7002.32.00.00 for low-expansion unworked tubes.
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. Classified under HTS 7002.32.00.00 as unworked tubes of low-expansion glass, prior to any cutting, bending, or sealing.
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. Falls under 7002.32.00.00 as unworked tubes meeting the precise expansion coefficient requirement.