Food-Contact Rules for Packaging Machines: FDA 21 CFR vs EC 1935/2004 — What to Specify and What to Demand in Writing

Which rulebook applies to your machine's food-contact parts

The two regimes are built differently, and that difference decides what you ask for. The US route is a set of specific listings: FDA regulates food-contact components through 21 CFR 174-179, covering general indirect additives, adhesives and coatings, paper and paperboard, polymers, adjuvants and production aids, and irradiation².

A component used in compliance with one of those regulations needs no further FDA review². The EU route is a framework that only bites through material-specific measures: Regulation (EC) No 1935/2004 sets the framework for materials and articles intended to contact food.

And Regulation (EU) No 10/2011 covers plastics specifically¹⁸. So a plastic contact part on an EU-destined machine sits under 1935/2004 as supplemented by 10/2011.

The same part on a US-destined machine is checked against a CFR listing^2,18. What the sources do not give you is the rule for choosing between them by destination market, or whether a dual-market machine must satisfy both^2,12,18.

Treat the regime as something you confirm with the builder and the destination authority before the RFQ, not something you infer from the machine's origin.

US route: what a quotable compliance claim must name

A component used in compliance with a 21 CFR 174-179 regulation needs no further FDA review. So your check is whether the builder can cite the specific listing its contact parts rely on².

Where no listing applies, the alternative routes are GRAS, prior sanction, and threshold-of-regulation exemption¹². Ask for the route, not the word "compliant".

• ✓Ask the builder to name the 21 CFR 174-179 listing each food-contact component relies on.
• ✓If no listing applies, ask which alternative route is claimed: GRAS (21 CFR 182-186 or a GRAS notice), prior sanction (21 CFR 181), or a threshold-of-regulation exemption.
• ✓Where a Food Contact Substance Notification covers the material, confirm the substance is sourced from the manufacturer named in that notification — an FCN is effective only for that manufacturer, substance and conditions of use.
• ✓Ask the FCS manufacturer for a letter of guaranty under Section 303(c)(2) certifying the product is acceptable for the intended food-contact use.
• ✓Rule out any quote that cannot name the route for each contact component, because a listing citation is the only thing that removes the need for further FDA review.

What written assurance to demand per component

The US instrument and the general component-level declaration are described in different contexts. The sources do not establish that they are equivalent documents^9,21.

On the US side, an FCN is effective only for the manufacturer, substance and conditions of use named in the notification, so the substance must be obtained from that manufacturer. You may ask that manufacturer for a letter of guaranty certifying the product is acceptable for the intended food-contact use⁹.

Separately, buyer guidance says to require supplier declarations of conformity for every food-contact component, not just the machine frame. It also calls for third-party migration and extractables lab results below regulatory thresholds and verification at maximum processing temperatures²¹.

Read together, the practical demand is a document per contact component — belts, seals, tubing, lubricants included — rather than one certificate for the machine²¹. Whether a US letter of guaranty and an EU-style declaration of conformity are interchangeable is not settled by these sources.

So if you are buying for both markets, ask the builder to state which document it issues for which market^9,21.

Material and hygienic-design criteria to write into the RFQ

Grade selection is a product-profile decision, not a regulatory one. 316-grade stainless steel resists corrosion from acidic products better than 304-grade but costs 15-20% more, and the choice depends on the product profile²¹.

If your product is acidic, that corrosion difference is the reason to weigh the premium; if it is not, the premium buys you little on the evidence given²¹. For hygienic design, EHEDG publishes guidelines covering surface finish, weld quality, drainage, sealing and cleanability.

EHEDG certification is described as increasingly required by major European food retailers and brand owners in supplier qualification¹⁸. For GMP-oriented lines, contact parts are specified as SUS316L or equivalent with pharma-grade lubricants, alongside IQ/OQ/PQ protocols, FAT/SAT support, calibration certificates and material certificates²².

No source in this set gives numeric Ra values, non-porosity criteria or cleanability specifications. So write those as your own requirements to be verified rather than quoting a figure^18,21.

A related check on hygienic design and what to verify is set out in EHEDG and 3-A Hygienic Design on a Packaging Machine.

Lubricants and seals: the incidental-contact check

Lubricants and seals are the parts buyers most often leave out of the compliance conversation, and they are the ones with a named US rule. 21 CFR 178.3570 covers lubricants with incidental food contact used on machinery for producing, manufacturing, packing, processing, preparing, treating, packaging, transporting or holding food²⁰.

EHEDG guidance documents address the use and production of H1 and HT1 registered lubricants^10,11. Above 85°C, one supplier reports that standard EPDM seals used instead of FDA-compliant silicone degraded and caused contamination recalls within six months — a single supplier's experience, not an industry threshold²¹.

• ✓Ask the builder to confirm the machine's lubricants fall under 21 CFR 178.3570 for incidental food contact.
• ✓Ask whether lubricants are H1 or HT1 registered, the category EHEDG guidance addresses.
• ✓For GMP-oriented lines, ask for pharma-grade lubricants as part of the material specification.
• ✓Ask for the seal material's rated temperature range and compare it against your maximum processing temperature.
• ✓Reject a build that cannot document lubricant compliance or a seal temperature rating, since neither can be verified after installation.

Documentation package to require at FAT and handover

The sources support a component-level package rather than a single machine certificate. What they do not give you is EU 10/2011 migration limit values, declaration-of-conformity batch or traceability references, or change-control notification obligations for material substitutions.

So those go into the RFQ as your requirements, not as quoted figures^21,22,25.

• ✓Supplier declarations of conformity for every food-contact component, not just the frame.
• ✓Third-party lab results showing material extractables remain below regulatory thresholds.
• ✓Verification that materials maintain compliance at your maximum processing temperatures, not just room temperature.
• ✓Material certificates and calibration certificates.
• ✓IQ/OQ/PQ protocols and FAT/SAT support for GMP-oriented lines.
• ✓For food or pharma machines with frequent sanitation, washdown-rated construction and documentation supporting HACCP or GMP compliance.

Cost and lead-time premium for a documented machine

Budget for two premiums, both reported by single peer-tier sources rather than industry benchmarks. Certification is reported to add 8-12 weeks to delivery timelines¹⁷.

Machines with proper documentation are reported to experience 63% fewer regulatory interruptions than those with partial or questionable certifications¹⁷. Separately, 316-grade stainless carries a 15-20% premium over 304-grade²¹.

Machine type, automation level and production capacity remain the primary cost drivers on top of these¹⁴. No source in this set gives a combined FDA-plus-EU compliance package price, lead time or volume threshold.

So if you need both regimes on one machine, ask the builder to quote the two documentation packages separately rather than assuming a bundled figure exists^17,21. For the wider material requirements that belong in the same RFQ, see Which Material Requirements Must Go Into a Food, Pharma or Chemical Equipment RFQ?.

The two figures to verify before you sign

Both figures below come from a single peer-tier source each, so treat them as that source's experience and ask the builder for its own numbers.

What the sources do not establish

• No source states the rule for choosing between FDA 21 CFR and EC 1935/2004 based on the destination market of the packaged product, or whether both regimes must be satisfied for dual-market supply.
• No source covers EC 2023/2006 GMP Regulation or 21 CFR 110/117 cGMP for food-contact surfaces.
• No source states the EU Article 16 Declaration of Compliance requirement or 21 CFR 7.13/190.6 letter of guaranty or statement of compliance.
• No source gives surface roughness (Ra) values, non-porosity criteria, or cleanability specifications for food-contact parts.
• No source states EU 10/2011 overall or specific migration limit values, or requires migration test reports in a documentation package.
• No source covers declaration-of-conformity batch or traceability references, or change-control notification for material substitutions.
• No source gives a combined FDA-plus-EU compliance package price, lead time, or volume threshold.
• No source describes EU member-state enforcement of EC 1935/2004.
• No source addresses whether the machine builder, as opposed to the material or food contact substance manufacturer, is the party responsible for issuing declarations.