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Home preserving
All Containers›Shop by use case›Home preserving›Containers›No canning lid, anywhereShop all home preserving →
Containers

No canning lid, anywhere

By Dwight Davis, Founder

On this page13
8 mason jars with nothing to can them with.

What is here

131 continuous thread polypropylene lids, 27 metal or aluminum CT caps, 12 dome lids, 11 metal lug or twist caps, 1 sealing disc, 1 metal overshell lid. 183 in total.

And what a two-piece lid is

A flat metal lid with a sealing compound round its rim, plus a separate screw band. Two articles that work together and are bought together.

Neither is in this catalog

No flat canning lid and no band, checked catalog-wide rather than against this shelf.

While 8 of the 20 containers are mason and paragon jars

Which is the jar the format was built around. The jar is stocked and its closure is not.

A continuous thread lid is not a substitute

It seals by thread compression and holds whatever pressure the jar builds. A canning lid is held by vacuum and has to vent during processing.

So the substitution is not merely imperfect

It is the wrong mechanism. Which is the same shape of finding as the beer property, where a threaded closure cannot hold carbonation.

The 11 metal lug or twist caps are the nearest article

A lug cap does form a vacuum seal on a glass jar and is how commercial preserves are packed. It is a different process from home canning.

And it needs a matching finish

Our shelf has 5 containers at 63TW and 2 at 70TW, which are twist finishes that a lug cap fits. 7 of 20 containers.

So there is a commercial-style route on this shelf

A twist-finish glass jar and a metal lug cap, which is a coherent pairing for a preserve packed hot.

Just not the home canning route

Which is the leaf named in the group and the one with nothing to close it.

The fix is a purchase, not an index change

Flat canning lids and bands, in the common sizes. Nothing about the index is hiding them because they do not exist here.

Which puts this in the same category as the beer closures

A catalog-wide absence of a defining article, stated rather than worked around.

References

The Davis Pack Supply catalog, measured 19 October 2026. Home canning uses a two-piece lid, a flat lid carrying a sealing compound plus a separate screw band. The 183 closures indexed to this group are 131 continuous thread polypropylene lids, 27 metal or aluminum CT caps, 12 dome lids, 11 metal lug or twist caps, 1 sealing disc and 1 metal overshell lid. None of them is a two-piece canning lid or a band, and a catalog-wide check finds none either. The shelf nevertheless holds 8 glass mason and paragon jars.
The Davis Pack Supply catalog, measured 19 October 2026. 203 rows: 20 containers and 183 closures, which is the second smallest container count in this library and the most lopsided closure ratio measured anywhere, at better than nine to one. 266 to 1,893 mL with a median of 473; 11 over a pint and 5 over a quart. 19 glass and 1 PET. 18 clear and 2 amber, which is the most monochrome shelf measured. 8 glass mason and paragon jars, 6 glass straight sided jars, 3 glass hex jars, 1 PET wide mouth container, 1 glass wide mouth short jar, 1 french square. Nine distinct neck finishes across 20 containers: 5 at 63TW, 4 at 89-400, 3 at 70-450G, 2 at 70TW, 2 at 70-400, and singles at 110-405, 70-450, 63-400 and 48-400. Liners on the closures: 53 heat induction seal, 28 F217, 22 pressure sensitive, 18 No Liner, 16 Plastis standard, 13 PE foam, 12 unrecorded, 11 Plastis pasteur, 9 foam. Buyability, a snapshot: 14 of 20 available, 6 not; 7 quote only; 19 of 20 full case only, with case packs from 12 to 144 and a median of 72.
Written from 21 CFR 114.3 and 114.80 and from the catalog as it stood on 19 October 2026. Part 114 governs commercial processors of acidified foods; home canning for a household is not commercial processing, and low-acid canned foods fall under part 113 which is a different and more demanding part not described here. Nothing on these pages tells anyone how to preserve anything, and cottage food laws, which are state law, are what actually govern a home preserver selling jars. There is no two-piece canning lid anywhere in this catalog.