Containers

Closures and liners

Updated October 2026

On this page8

What is here Seven spice caps is the honest number Gasket or membrane Induction sealing needs a machine Tamper evidence matters in food Dome lids are for display Standardize, then prove it References

For a hygroscopic powder the liner is the package, and the fitment choice is narrower than the archetype suggests.

What is here

207 continuous thread, 21 dome lids, 7 spice caps, 5 tub lids, 2 specialty closures, 1 flip top. By liner, 69 HIS, 41 F217, 31 pressure-sensitive, 27 none, 21 standard plastisol, 19 PE foam and 14 foam.

Seven spice caps is the honest number

If the product is shaken, the sifter or shaker fitment is the component that makes it work, and there are seven on this shelf. That is a real constraint and the right time to find out is now.

Gasket or membrane

Foam, F217 and plastisol compress against the land and seal while the cap is tight. An induction liner bonds to the land and holds with the cap off. For a product that cakes, the second is a materially better barrier.

Induction sealing needs a machine

Those 69 HIS closures are foil-faced liners until they pass under a sealing head at the right power and line speed. Buying them without the step gets you a gasket and a tamper-evidence story you cannot tell.

Tamper evidence matters in food

A bonded membrane is visible evidence that the jar has not been opened, which for anything going on a child’s cake is worth more than the cost of the sealer. It is also what a retailer will ask about.

Dome lids are for display

Twenty-one of them, and they suit a jar opened constantly rather than stored sealed. For a colorant or a leavening agent held over months they are the wrong choice, however good they look in a set.

Standardize, then prove it

One neck, one closure, one liner and one sealing setting across the range, then keep retained samples and open one later. That is the only measurement of your package rather than of your powder.

References

21 CFR 101.22(j), which requires a food containing an added chemical preservative to declare both the common or usual name of the ingredient and a separate description of its function, giving "preservative", "to retard spoilage", "a mold inhibitor", "to help protect flavor" and "to promote color retention" as examples. law.cornell.edu

Written from federal statute and regulation, not from a kitchen. Food labeling has more parts than three sections, and a state cottage food program may add or subtract requirements for a local sale. Nothing here is clearance for a specific label, and whether an ingredient is cleared for food use is a question about that ingredient.