Chapter 7020 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 70.20
Borosilicate Glass Inner for Thermos Vacuum Flask
A borosilicate glass inner liner designed specifically for use inside thermos vacuum flasks to hold hot or cold liquids. It fits precisely within the outer stainless steel shell, creating the vacuum insulation. This product is a glass inner for vacuum vessels, falling directly under this tariff item.
7020.00.10Borosilicate Inner Flask for Coffee Thermal Carafe Vacuum Vessel
A glass inner flask for electric coffee maker thermal carafes, creating vacuum insulation between glass and stainless exterior to keep coffee hot. It is precision-molded with a handle recess for vacuum vessel integration. This is a glass inner for vacuum vessels, qualifying for this tariff item.
7020.00.10CVD Quartz Reactor Liner
A fused silica quartz liner tube used inside chemical vapor deposition (CVD) reactors for semiconductor manufacturing. It protects the furnace chamber from corrosive process gases while maintaining optical transparency for monitoring. This article is made of glass with a very low coefficient of thermal expansion, falling under the tariff item for glassware with a linear coefficient of expansion not exceeding 5x10-6 per Kelvin.
7020.00.10Fused Quartz Diffusion Tube
A high-purity fused quartz tube designed for insertion into diffusion furnaces used in semiconductor wafer production. It withstands extreme temperatures and corrosive gases during the doping process. The glass has a very low coefficient of thermal expansion, qualifying for this tariff item.
7020.00.10Fused Silica Wafer Boat Support
A fused silica holder designed to support multiple wafer boats within oxidation furnaces for semiconductor production. It provides thermal uniformity and contamination-free handling. The material's low thermal expansion coefficient qualifies it for this tariff item.
7020.00.10Glass Inner Tube for Portable Vacuum Camping Mug
A thin-walled borosilicate glass inner tube for stainless steel camping vacuum mugs, enabling 24-hour hot/cold retention via vacuum insulation. It features leak-proof lid threading. This is a glass inner for vacuum vessels, falling under this tariff item.
7020.00.10Glass Liner Inner for Laboratory Vacuum Dewar Flask
A high-purity borosilicate glass inner container for cryogenic vacuum Dewar flasks used in scientific labs to store liquefied gases. The inner wall forms the vacuum space with the outer wall for superior insulation. This is a glass inner for vacuum vessels, qualifying for this tariff item.
7020.00.10Horizontal Diffusion Furnace Tube
A long fused quartz tube for horizontal diffusion furnaces used in semiconductor dopant diffusion processes. It is engineered for gas flow dynamics and operation at temperatures above 1200°C. The glass's low thermal expansion coefficient places it under this tariff item.
7020.00.10Quartz Glass Inner for Industrial Vacuum Reaction Vessel
A fused quartz glass inner cylinder for high-temperature industrial vacuum reaction vessels used in chemical processing. It provides chemical resistance and vacuum integrity under extreme conditions. This is a glass inner for vacuum vessels, falling under this tariff item.
7020.00.10Quartz LPCVD Reactor Tube
A specialized fused quartz tube for Low Pressure Chemical Vapor Deposition (LPCVD) reactors in semiconductor thin film deposition. It maintains vacuum integrity at elevated temperatures. The low thermal expansion coefficient of the quartz qualifies it for this tariff item.
7020.00.10Quartz Oxidation Boat Holder
A precision-machined fused quartz holder for semiconductor wafer boats in oxidation furnaces. It enables uniform thermal distribution and chemical purity during oxide layer formation on wafers. The glass's low thermal expansion coefficient qualifies it for this tariff item.
7020.00.10Replacement Glass Inner for Stanley Adventure Vacuum Bottle
An OEM replacement borosilicate glass liner for stainless steel vacuum bottles, featuring a threaded neck for a secure vacuum seal. It is designed to maintain beverage temperature through double-wall vacuum insulation. This is a glass inner for vacuum vessels, qualifying for this tariff item.
7020.00.10Semiconductor Quartz Process Tube
A high-temperature fused quartz process tube for diffusion and oxidation stages in silicon wafer fabrication. It features precise ID/OD tolerances for horizontal furnace insertion. The low thermal expansion coefficient qualifies it for this tariff item.
7020.00.90Aquarium Glass Ornament
A submersible glass treasure chest or seashell sculpture for fish tank decoration, safe for aquatic environments. It is a decorative article of glass not specifically covered elsewhere in Chapter 70. It is not a toy, as it is designed for pet habitats, and not laboratory glassware.
7020.00.90Artisan Glass Bottle Stopper
A decorative solid glass cork replacement with colored twists or animal shapes for wine or spirit bottles. It is an all-glass article used as a stopper, not a closure of metal or rubber. As an article of glass not elsewhere specified, it falls under the residual tariff item.
7020.00.90Blown Glass Figurine
A delicate hand-blown glass animal or abstract figure for shelf display, with hollow construction. It is a decorative article of glass for adult collectors, not a toy. As an article of glass not specifically covered elsewhere, it falls under the residual tariff item.
7020.00.90Decorative Glass Kaleidoscope
A handheld viewing tube with internal glass beads and mirrors creating symmetric patterns when rotated. It is a decorative article of glass, not an optical instrument. As it is not a toy and not specifically covered elsewhere, it falls under the residual tariff item.
7020.00.90Decorative Glass Tealight Holder
A freestanding colored glass vessel with cutouts for holding tealight candles, used for ambient lighting decoration. It is a decorative article of glass, not a lighting fitting with a permanently fixed light source. As an article of glass not elsewhere specified, it falls under the residual tariff item.
7020.00.90Fused Glass Wall Panel
A kiln-fired fused glass artwork panel for interior wall hanging, featuring layered colors and patterns. It is a decorative article of glass, not building glass or a picture. As an article of glass not specifically covered elsewhere, it falls under the residual tariff item.
7020.00.90Glass Door Sign Plaque
An etched glass panel with business name or house number for door mounting, frosted for readability. It is a decorative article of glass, not a sign of base metal. As an article of glass not specifically covered elsewhere, it falls under the residual tariff item.
7020.00.90Glass Fortune Teller Ball Stand
An ornate glass base and holder for a crystal gazing ball, used as a decorative mystical prop. It is a static display stand, not a laboratory sphere or a lampshade. As an article of glass not specifically covered elsewhere, it falls under the residual tariff item.