FAR and DFARS › DFARS Part 223: Environment, Sustainable Acquisition, and Material Safety › Subpart 223.73
DFARS 223.7304 Exceptions.
The codified text (eCFR, as of 2026-10-02). Under the Revolutionary FAR Overhaul ↗, agencies follow class deviations with new text for many parts while the formal rules go through the Federal Register: check the solicitation and your contract's clauses, which rule.
In plain English
This section lists exceptions to the DFARS prohibition on hexavalent chromium. It says the prohibition does not apply to legacy systems and their parts that already contain hexavalent chromium, or to additional sustainment contracts for a system where hexavalent chromium use was previously approved. For contractors, this means certain existing systems and follow-on support work may continue to use hexavalent chromium despite the general ban.
Applies to: Legacy systems and sustainment-related contracts covered by DFARS 223.7303
What it requires
- Consider alternatives to hexavalent chromium during system modifications, follow-on procurements of legacy systems, or maintenance procedure updates
Key terms: hexavalent chromium · legacy systems · sustainment related contracts · system modifications · follow-on procurements
Written by AI from this section's text. A guide, not legal advice: the text below rules.
The text
The prohibition in 223.7303 does not apply to—
(a) Legacy systems and their related parts, subsystems, and components that already contain hexavalent chromium. However, alternatives to hexavalent chromium shall be considered by the appropriate official during system modifications, follow-on procurements of legacy systems, or maintenance procedure updates; and
(b) Additional sustainment related contracts (e.g., parts, services) for a system in which use of hexavalent chromium was previously approved.
Sections it refers to
- 223.7303 Prohibition.
← 223.7303 Prohibition. · 223.7305 Authorization and approval. →
Rule changes for DFARS Part 223
- Defense Federal Acquisition Regulation Supplement: Disclosure of Greenhouse Gas Emissions (DFARS Case 2024-D021) ↗ · final rule 2026-05-07 · effective 2026-05-07
- Defense Federal Acquisition Regulation Supplement: Sustainable Procurement (DFARS Case 2024-D024) ↗ · final rule 2024-08-15 · effective 2024-08-15
- Defense Federal Acquisition Regulation Supplement: Replacement of Fluorinated Aqueous Film-Forming Foam (DFARS Case 2020-D011) ↗ · final rule 2024-03-26 · effective 2024-03-26
Source: eCFR, 48 CFR chapters 1 and 2 (GPO GovInfo bulk data) ↗. Plain words for the terms: glossary.