Fifteen orphaned closures, two different causes. Counting them together overstates the gap.
Matching a neck finish as a string
This shelf writes the same nominal size two ways. Every container uses the dash form and ten closures use the millimeter form, and five of those six sizes exist in both. A string match connects none of them.
Counting all fifteen orphaned closures as a gap
Ten are a notation mismatch and five are parts that do not thread onto a neck at all: a dome lid, a dairy lid, two lip balm tube caps and a deodorant lid. Only the ten are a record problem.
Reading the basis column as unused
Fourteen rows of 55,902 state a reason, which looks like a column nobody populates. All ten product references in those fourteen rows carry the millimeter notation, so the column was used exactly where it was needed.
Choosing a material by looking at the container list
The containers here record three materials and the closures record eight. The material decision on this shelf is a closure decision, and 30 of the 232 closures are metal while the container side has no metal at all.
Filtering the closure material column on an exact string
Two rows read plastic and metal and one reads metal and polypropylene. A filter matching metal exactly returns 30 rows and drops the four that are partly metal, and two further rows read simply plastic, which is a category rather than a material.
The counts arrive in spikes: 30 containers at 36, 25 at 62, 11 at 17, 7 at 26, 5 at 67. Seven values cover all 81 covered containers, so the distribution is both shorter and truer than a median.
Expecting a vented container
No row on this shelf is described as vented, breathable or perforated. Earplugs are the leaf that would want one, and the honest answer is that the shelf does not carry it.
And treating the small parts regulation as a size rule
It is a gauge test. An article fails if it fits entirely within a named cylinder, in any orientation and without being compressed, and it applies only to toys and articles intended for use by children under three. Nothing on these pages performs that test or applies it to anything here.
References
The Davis Pack Supply catalog, measured 19 October 2026. Every container on this shelf that records a neck finish uses the dash notation: 48-400, 53-400, 58-400, 63-400, 70-400, 75-400 and 89-400, plus one reading 38DBJ. No container uses a millimeter notation. Ten closures do: one at 38MM, one at 48MM, one at 53MM, three at 58MM, two at 70MM and two at 89MM. Five of those six millimeter values also appear on this shelf in the dash form. All ten of the millimeter closures are recorded as fitting nothing on this shelf, and nine of the ten are sealing discs. Of the fifteen closures here that fit nothing, ten are those millimeter rows and five record no neck finish at all: a dome lid, a dairy lid, two lip balm tube caps and a deodorant lid.
The Davis Pack Supply catalog, measured 19 October 2026. The closure fit table holds 55,902 rows and fourteen of them record a basis for the assertion. Twelve read "supplier states the same neck notation on both: 43MM" and two read the same at 40MM. The ten product references named across those fourteen rows all carry a millimeter neck notation: four clear PET foamer bottles and two white PP foamer pumps at 43MM with a natural PP spice sifter disc at 43MM, and a clear and a white PET foamer bottle with a white PP foamer pump at 40MM. The fishing property sets out the rest of what that table records.
16 CFR 1501.4(a): "No toy or other children’s article subject to 1500.18(a)(9) and to this part 1501 shall be small enough to fit entirely within a cylinder with the dimensions shown in Figure 1, when tested in accordance with the procedure in paragraph (b) of this section. In testing to ensure compliance with this regulation, the dimensions of the Commission’s test cylinder will be no greater than those shown in Figure 1. (In addition, for compliance purposes, the English dimensions shall be used. The metric approximations are included only for convenience.)" 16 CFR 1501.1 explains that 1500.18(a)(9) classifies as a banned hazardous substance any toy or other article intended for use by children under 3 years of age that presents a choking, aspiration, or ingestion hazard because of small parts.
law.cornell.edu 