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HSChapter 32
U.S. exports of nonrefractory surfacing preparations for facades & similar surfaces (HS 321490) totaled $19.6M in July 2026.
Importers of Nonrefractory Surfacing Preparations for Facades & Similar Surfaces paid $544K in duties in July 2026 — an effective duty rate of 13% on $4.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataGlaziers' putty, grafting putty, resin cements, and related nonrefractory surfacing preparations for facades, walls, floors, ceilings, and similar surfaces split at the 10-digit level by binder chemistry: rubber-based formulations (3214901000) versus all others (3214905000). Germany leads US import supply, reflecting its strength in high-performance construction chemistry, with Mexico and Canada also significant sources. The rubber-based vs. non-rubber distinction is a common classification challenge, as silicone and polyurethane sealants may require careful analysis to determine whether they are more properly classified here or under Chapter 39 (plastics) or Chapter 40 (rubber). Importers should confirm the primary binder composition with suppliers before filing entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
557 shipments/mo
Silicone sealants can be contested between heading 3214 (surfacing preparations) and Chapter 39 (plastics). The key factor is whether the product is a finished preparation put up for retail or professional use as a surfacing/sealing compound — which favors 3214 — versus a primary silicone polymer form. Classification should be confirmed with a licensed customs broker using the product's technical data sheet and GRI rules.
The two 10-digit lines (3214901000 for rubber-based and 3214905000 for all others) may carry different duty rates. Importers should verify current rates in the Harmonized Tariff Schedule of the United States at the time of entry, as rates can be modified by trade actions or legislative changes.
ImportsExports
Imports
$6.4MYoY · Pro
Exports
$19.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Canada and Mexico together take 68% of it.
customs district
origin
entry
rate provision · imports
34.8% enters free of duty; the effective duty rate is 8.45%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3214905000 | Glazers' Putty,Etc, NESOI | $5.5M | 8.42% | 64.45% | $459K |
| 3214901000 | Glazers' Putty,Etc, Based on Rubber | $983K | 8.63% | 78.71% | $85K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3214905000 | Glazers' Putty,Etc, NESOI | $15.4M |
| 3214901000 | Glazers' Putty,Etc, Based on Rubber | $4.1M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Subheading 2 of 2 in heading 3214
Subheading 321490 · $6.4M of $45.8M
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