Containers

The liner is the only feature

On this page13

What is here So 71 of 128 can show interference And 39 of 128 cannot Which is the distinction to hold Heat induction seal is the strong one Pressure sensitive is lighter There is no closure-based feature at all And no band or wrap 18 CT CRC closures do a different job And 10 closures have nothing recorded So the shelf splits three ways rather than two So one decision carries the whole requirement References

Zero tamper-evident closures and zero sealing discs. The liner is it.

What is here

53 heat induction seals, 18 pressure sensitive liners, 11 F217, 11 foam, 10 Plastis standard, 6 PE foam, 1 F217 and PS, against 8 recorded as No Liner and 10 unrecorded.

So 71 of 128 can show interference

The 53 induction seals and the 18 pressure sensitive liners. Both are destroyed or displaced by opening in a way a consumer can see.

And 39 of 128 cannot

11 F217, 11 foam, 6 PE foam, 10 Plastis standard and 1 combination are sealing liners rather than tamper features. They reseal, which is the opposite property.

Which is the distinction to hold

A liner that reseals is good for product protection and useless as evidence. A liner that is destroyed on opening is the reverse.

Heat induction seal is the strong one

53 of 128, bonded to the land and intact until broken. It is the article the whole category is built on.

Pressure sensitive is lighter

18 closures. It adheres on first closing and is displaced by opening, which shows interference without resisting it. An indicator rather than a barrier.

There is no closure-based feature at all

No tamper-evident lid and no sealing disc among the 128. 77 are plain continuous thread polypropylene lids.

And no band or wrap

Which would be the other place to put an indicator. Nothing on this shelf goes over the closure.

18 CT CRC closures do a different job

Child resistance, which is not tamper evidence. Both functions are available here and they are separate articles.

And 10 closures have nothing recorded

Which is an absence of data rather than a statement that there is no liner. 8 others are recorded as No Liner, and those two values mean different things.

So the shelf splits three ways rather than two

Can show interference, cannot, and unknown. The third group is 10 of 128 and the answer is to ask.

So one decision carries the whole requirement

The liner, specified by name, and printed if the distinctiveness limb matters. We publish the first and not the second.

References

The Davis Pack Supply catalog, measured 19 October 2026. The only tamper-evident capability among the 128 closures indexed to this group is a liner: 53 carry a heat induction seal and 18 a pressure sensitive liner, with 11 F217, 11 foam, 10 Plastis standard, 6 PE foam, 1 F217 and PS, 8 recorded as No Liner and 10 unrecorded. There is no tamper-evident closure and no sealing disc on the shelf at all. We publish the liner type and not whether it carries a printed pattern, name, trademark, logo or picture.

21 CFR 211.132(b)(1): "A tamper-evident package is one having one or more indicators or barriers to entry which, if breached or missing, can reasonably be expected to provide visible evidence to consumers that tampering has occurred." The same paragraph requires the packaging to be "distinctive by design or by the use of one or more indicators or barriers to entry that employ an identifying characteristic (e.g., a pattern, name, registered trademark, logo, or picture)", with distinctive by design meaning packaging that "cannot be duplicated with commonly available materials or through commonly available processes." The section reaches an over-the-counter human drug product packaged for retail sale and accessible to the public while held for sale, and nothing here asserts it binds any particular activity. law.cornell.edu

Written from 21 CFR 211.132 and from the catalog as it stood on 19 October 2026. That section reaches an over-the-counter human drug product packaged for retail sale and accessible to the public while held for sale; a kit assembled at home from bulk is not that, and nothing here asserts the section binds any particular activity. The only tamper-evident capability on this shelf is a liner, and we publish the liner type and not whether it carries a printed identifying characteristic, which is the attribute the distinctiveness requirement turns on.