Harmonized System
U.S. imports of Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics (HS 391710) totaled $15.7M in August 2026, imported from 35 countries.
Importers of Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics paid $932K in duties in August 2026, an average duty rate of 5.94% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics imports of $15.7M in August 2026 ran 12% below the year-to-date monthly average of $17.8M.
Last updated: August 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.
220 import shipments a month
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.
ImportsExports
Imports
$15.7MYoY · free account
Exports
$11.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $203.4M of Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics and exported $120.0M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 7 of 10 in heading 3917
Subheading 391710 · $15.7M of $322.0M
Trade Directory
List your company under HS 391710 — Artificial Sausage Casings of Hardened Protein or Cellulosic Plastics, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3917106000 | Artificial Guts(Sausage Casing)of Collagen | $7.6M | 9.71% | 94.17% | $735K |
| 3917101000 | Artificial Guts(Sausage Casings) of Cell Plast Mat | $5.4M | 2.77% | 27.59% | $150K |
| 3917109000 | Artificl Gut(Sausage Casing)of Hardend Protein, Nes | $2.7M | 1.73% | 17.26% | $47K |
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 | $11.3M |
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 · August 2026
origin
Mexico and Czech Republic together supply 73% of it. Japan pays 12.5% duty; Mexico 0.0%.
customs district
destination
entry
rate provision · imports
42.1% enters free of duty; duty collected equals 5.94% of imports for consumption.