Each one has a cause. Most of them are about quantity rather than about the jar.
Ordering one jar
Six containers of 251 come in a case of 24 or fewer and 65 are full case only. The failure is a plan built around a single jar meeting a shelf that is priced and packed by the case.
Forgetting the lid sets the minimum
No closure on this shelf comes in a case smaller than 200 and the median is 970. A container found in a small case still needs a lid, and the lid is the component that fixes the quantity.
Specifying a material that is not here
There are exactly three: PET, polypropylene and glass. A specification that calls for HDPE, polyethylene, metal or board has no row to resolve to, and the shelf will look empty when it is merely narrow.
Reading an unrecorded field as a specification
Nineteen containers record no neck finish, 14 no height and 31 no diameter. None of those blanks means anything. The rule described on these pages assigns meaning to a blank; a catalog does not.
Choosing black for a sorted set
Twenty six rows are black and they give neither a view of the contents nor a silhouette. That turns a storage decision into a labeling project, which is fine if intended and a surprise if not.
A button collection sorts by size or by set, so several small identical jars beat one large one. The capacity band between about 60 and 250 mL is where this shelf is deepest and it is the band that suits the job.
Treating elastic as storable indefinitely
Rubber and spandex lose elasticity with time, heat and light regardless of the container. A cool dark jar slows a loss; it does not prevent one, and an old elastic scrap can measure correctly and still fail in use.
Treating an availability count as a promise
159 of 251 containers and 213 of 288 closures were available when this was measured on 19 October 2026. That is a snapshot of one day and the page says which day on purpose.
And one failure that is not about the shelf at all
Assuming part 423 applies here. It does not reach a button, a bobbin or a zipper pull, and nothing on these pages says otherwise. It is the spine of this property because it is the federal rule that governs the label on the thing these parts go into, and because of what it does with a silence.
References
The Davis Pack Supply catalog, measured 19 October 2026. Container case packs run from 12 to 6,370 with a median of 288; 167 of the 250 that record one fall between 101 and 500, 54 are over 500, and only 6 come in a case of 24 or fewer. Closure case packs run from 200 to 12,500 with a median of 970, and 252 of 286 are over 500. 65 of 251 containers and 11 of 288 closures are full case only. Availability, a snapshot and not a promise: 159 of 251 containers and 213 of 288 closures were marked available. Unit prices run 21 cents to $7.05 for containers, median 90.5 cents, and 5 cents to $4.45 for closures, median 39 cents.
The Davis Pack Supply catalog, measured 19 October 2026. Nine colors across 251 containers: 91 clear, 47 white, 32 amber, 26 black, 24 natural, 15 blue, 9 green, 5 frosted and 2 dark amber. Thirteen closure families across 288 closures: 179 continuous thread polypropylene lids, 42 metal or aluminum CT caps, 22 PP dome lids, 17 metal lug or twist caps, 9 sealing discs, 6 PE round tub lids, 5 phenolic style caps, and six further families of two or fewer. Neck finish: 56 at 70-400, 56 at 89-400, 36 at 58-400, 16 at 53-400, 14 at 18DIN and 12 at 48-400, with 19 of 251 recording none. Height 0.5 to 6.745 inches, median 2.5, with 14 unrecorded; diameter 0.617 to 4.625 inches, median 2.85, with 31 unrecorded.
16 CFR 423.6(b)(1) and (b)(2), which permit an omission in five places: "if the regular use of hot water up to 145 degrees F (63 degrees C) will not harm the product, the label need not mention any water temperature"; "if the regular use of a high temperature will not harm the product, the label need not mention any drying temperature"; "if the regular use of a hot iron will not harm the product, the label need not mention any ironing temperature"; "If all commercially available bleaches can safely be used on a regular basis, the label need not mention bleaching"; and "if all commercially available types of solvent can be used, the label need not mention any types of solvent." 16 CFR 423.1(d) states the consequence: "When no temperature is given, e.g., warm or cold, hot water up to 145 degrees F (63 degrees C) can be regularly used."
law.cornell.edu 