HSChapter 70
U.S. imports of closed glass fabrics, chemically bonded, nesoi (HS 701972) totaled $918K in April 2026, traded with 9 countries.
Importers of Closed Glass Fabrics, Chemically Bonded, NESOI paid $133K in duties in April 2026 — an effective duty rate of 17% on $803K in dutiable value, based on actual customs collections rather than the published tariff schedule. Closed Glass Fabrics, Chemically Bonded, NESOI imports of $918K in April 2026 ran 27% above the year-to-date monthly average of $725K.
Last updated: April 2026 dataChemically bonded closed-weave glass fabrics — where a resin or chemical binder consolidates a tightly woven glass fiber structure — serve demanding applications in electrical insulation, aerospace composites, and high-silica thermal protection. The US schedule distinguishes tire-cord constructions, narrow fabrics (≤30 cm), and wider goods by color status, with separate lines for high-silica (>93% SiO₂) and standard-silica variants (7019720000 through 7019729060). Germany leads US supply, with Costa Rica and China also significant sources. High-silica variants used in aerospace or defense applications may be subject to additional export-control or end-use documentation requirements at origin.
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Fabrics woven from high-silica filaments (greater than 93% SiO₂) have distinct thermal and chemical resistance properties that command different commercial values and, in some cases, different duty rates. The US schedule therefore maintains separate 10-digit lines — such as 7019724060 and 7019729030/7019729060 — for high-silica versus standard-silica constructions, requiring importers to document the silica content of the fiber used.
CBP may request a manufacturer's technical data sheet or process description confirming that a chemical binder (resin, starch, or similar agent) — rather than mechanical interlocking — consolidates the fabric structure. A binding ruling from CBP is advisable when the bonding method is not clearly stated on commercial documentation, particularly for high-value aerospace or electrical-grade materials.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $2K | $818K | +$816K |
| GERMANY | $723K | $32K | -$691K |
| AUSTRALIA | -- | $281K | +$281K |
| COSTA RICA | $113K | -- | -$113K |
| LATVIA | $68K | -- | -$68K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7019729060 | CB CLSD WVN FBRCS OF SIL FL, CLRD, SILICA LT=93% | $640K | 17.03% | $109K |
| 7019724060 | CB CLSD WVN FBRC OF SIL FL, NT CLRD, SILICA LT=93% | $113K | -- | -- |
| 7019723000 | CHEM BON FBRGLS TR NT CLRD WVN,GT 30 CM | $85K | 10.00% | $9K |
| 7019729030 | CB CLSD WVN FBRC OF SIL FL, COLORED, SILICA GT 93% | $68K | 17.00% | $12K |
| 7019721500 | CHEM BON CLOSED WOV FABR, NT GT 30 CM IN WIDTH | $8K | 41.00% | $3K |
| 7019720500 | CHEM BON FBRGLS TIRE FBRC WV 9-11 MCRN FLMNTS | $3K | 35.03% | $1K |
| 7019727000 | CB FBRGLS TR FB CLRD 9-11 MCRN DIA GT 30 CM | $0 | -- | -- |
CB CLSD WVN FBRCS OF SIL FL, CLRD, SILICA LT=93%
CB CLSD WVN FBRC OF SIL FL, NT CLRD, SILICA LT=93%
CHEM BON FBRGLS TR NT CLRD WVN,GT 30 CM
CB CLSD WVN FBRC OF SIL FL, COLORED, SILICA GT 93%
CHEM BON CLOSED WOV FABR, NT GT 30 CM IN WIDTH
CHEM BON FBRGLS TIRE FBRC WV 9-11 MCRN FLMNTS
CB FBRGLS TR FB CLRD 9-11 MCRN DIA GT 30 CM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7019720000 | CLOSED GLASS FABRICS, CHEMICALLY BONDED, NESOI | $1.2M |
CLOSED GLASS FABRICS, CHEMICALLY BONDED, NESOI
77.8K m2
GLASS MIRRORS, FRAMED, EXC REARVIEW
HS 700992
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | $638K | -- | -$638K |
| LAREDO, TX | -- | $412K | +$412K |
| HILDAGO, TX | -- | $380K | +$380K |