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HSChapter 34
U.S. imports of lubricating preparations (non-petroleum, general use, nesoi) (HS 340399) totaled $13.5M in April 2026, traded with 35 countries.
Last updated: April 2026 dataNon-petroleum lubricating preparations not formulated for textile, leather, or furskin treatment — covering general industrial, mechanical, and specialty applications — are classified under this residual heading. Products here rely on synthetic base stocks such as polyalphaolefins, esters, or silicones rather than petroleum or bituminous mineral oils, and the single US tariff line (3403990000) reflects the heading's catch-all character. Germany is the primary import source, with Canada and Japan also supplying the US market, consistent with the global concentration of high-performance synthetic lubricant production. The NESOI designation means classification here is appropriate only after confirming the preparation does not belong in any more specific heading within Chapter 34.
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Preparations under 340399 commonly use synthetic base stocks — such as polyalphaolefins (PAO), synthetic esters, polyalkylene glycols, or silicone fluids — rather than petroleum-derived oils. The defining characteristic is the complete absence of petroleum or bituminous mineral oils, which would otherwise direct the product to heading 340319.
The key question is whether the preparation contains any petroleum or bituminous mineral oils. If the answer is yes, heading 340319 applies regardless of the proportion; if no petroleum-derived oils are present, 340399 is appropriate. A binding ruling request to CBP can provide certainty for high-volume or recurring shipments where the base oil composition is ambiguous.
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Monthly import values over time