Weck
German jar system with a glass lid, a natural rubber ring and steel clamps — the food touches glass on every surface, top included.
$$$Our price tier
Le Parfait
Super Jar French Glass Storage Jar
Plasticproof Excellent $$$Our price tier
Wire-bail glass jar with a natural rubber gasket — pantry storage and fermenting with glass, rubber and steel, and no plastic seal at all.
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See exactly how we verify this
Glass, rubber and steelNo plastic seal or liner.
Ferment-friendly sealVents out, closes to air.
Replaceable gasketA tired seal is not a dead jar.
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Why it's safe for your family
- The seal is a natural rubber gasket rather than the plastic-lined metal lid used on most preserving jars, so an acidic ferment is in contact with glass and rubber only.
- The wire bail applies pressure without a screw thread, which is why these jars work for fermenting: the seal can vent gas outward while staying closed to air.
- Glass is inert against acid, salt and oil — the three things that pull compounds out of plastic containers — which makes it the right material for pickles, sauces, oils and anything that sits for months.
- Every part is replaceable. Gaskets are sold separately for a few cents, so a jar with a tired seal gets a new one rather than being thrown away.
Quick specs
Body
Glass
Seal
Natural rubber gasket
Closure
Wire bail with steel clamp
Plastic
None
Use
Pantry storage, fermenting, preserving
What to avoid instead
Avoid plastic pantry containers for anything oily or acidic, and avoid jars whose metal lids have a plastic liner sitting against a ferment for months. If you are canning specifically, use jars and lids rated for your canning method — a bail jar is for storage and fermentation, not a substitute for tested canning procedure.
How we verify — and what we don't
Straight answer: we're a research team, not a testing lab. Here's exactly what our rating is based on — and what it isn't — so you can weigh it honestly.
What we check
- What the product is made of, from the maker's own specs and product listing.
- Whether any part that touches you or your food uses PTFE, PFAS, plastic, or a coating that can degrade.
- Peer-reviewed research on how that material behaves when heated, scratched, washed, or worn.
- Known failure modes — how the product actually breaks down in a real home.
What we don't do
- We have not chemically tested this specific unit in a lab.
- We don't take payment to rate a product higher — there is no sponsored placement.
- We don't show star ratings or "trusted by thousands" counts we can't stand behind.
What gets a product rejected
Anything that adds a known microplastic, PFAS, or off-gassing source — a non-stick coating, a plastic surface against food or skin, vinyl/PVC — is downgraded or cut. We only list what clears that bar.
Don't take our word for it — check the sources yourself Le Parfait's product details
Common questions
Can I use these for water-bath canning?
Follow tested canning guidance rather than a product page for that. Bail-and-gasket jars are excellent for dry storage, refrigeration and fermenting; shelf-stable canning has its own tested procedures and equipment requirements, and it is not a place to improvise.
How long does the rubber gasket last?
A season or two of regular use before it stiffens. Replacements are inexpensive, and a gasket that no longer springs back is the reason a jar stops sealing — replace it before assuming the jar has failed.
Why glass rather than a good plastic container?
Because pantry contact is long. A container holding oil, vinegar or a salty ferment for months is the opposite of a quick lunch box: time and chemistry are both working. Glass simply does not participate.
Related reading
Kitchen Plastic Detox Guide
