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HSChapter 39
U.S. imports of artificial sausage casings of hardened protein or cellulosic plastics (HS 391710) totaled $17.7M in July 2026, traded with 35 countries.
Importers of Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics paid $1.0M in duties in July 2026 — an effective duty rate of 11% on $9.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataCollagen, cellulosic, and other hardened-protein sausage casings occupy a specialized niche in meat-processing supply chains, where casing type directly affects cook yield, peel performance, and labeling requirements. The US schedule breaks this heading into four 10-digit lines — cellulosic casings (3917101000), collagen casings (3917106000), other hardened-protein casings (3917109000), and a residual line (3917100000) — reflecting the material distinctions that matter most to processors. Mexico leads US import supply, followed by Czech Republic and Germany, making European technical standards and USMCA origin rules both relevant to sourcing decisions. Importers should note that casings contacting food may trigger FDA food-contact material review in addition to standard customs entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
315 shipments/mo
The schedule separates casings by material: cellulosic plastic casings (3917101000), collagen casings (3917106000), other hardened-protein casings not elsewhere specified (3917109000), and a general residual line (3917100000). Correct classification depends on the specific polymer or protein substrate, so lab documentation from the manufacturer is advisable.
Although casings themselves are not food, those intended for direct food contact may be subject to FDA review under food-contact substance regulations. Importers should confirm whether the casing material has an applicable FDA food-contact notification or prior sanction. Consult a licensed customs broker or regulatory counsel to confirm admissibility requirements for your specific product.
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ImportsExports
Imports
$17.7MYoY · Pro
Exports
$10.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 3917106000 | Artificial Guts(Sausage Casing)of Collagen | $8.5M | 9.70% | 96.93% | $820K |
| 3917101000 | Artificial Guts(Sausage Casings) of Cell Plast Mat | $6.2M | 2.84% | 19.47% | $177K |
| 3917109000 | Artificl Gut(Sausage Casing)of Hardend Protein,Nes | $3.0M | 1.37% | 10.56% | $42K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3917100000 | Art Guts, Sausage Casing, Harden Protein/Cellulos | $10.4M |
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.
Imports · July 2026
origin
Mexico and Czech Republic together supply 63% of it.
customs district
destination
entry
rate provision · imports
45.1% enters free of duty; the effective duty rate is 5.86%.