If you keep a cupboard full of Ball or Kerr jars, you already know the weak point is the lid. The two piece metal canning sets that come with most jars are made to be used once for a proper seal, and the flat disc tends to rust, dent, or lose its grip after it has been through the dishwasher a few times. The AOZITA 20 pack sets out to solve that for storage, not for canning. On paper it is a straightforward proposition: ten wide mouth caps and ten regular mouth caps in food grade plastic, listed as leakproof and dishwasher safe, so you can cover a jar, seal leftovers, or store dry goods without hunting for a matching ring and disc. This review is editorial and based on the Amazon listing and the stated specifications. We have not used these lids ourselves, so everything below is framed around what the manufacturer claims and what a buyer should confirm before purchase.
What it is
This is a pack of reusable plastic storage lids for standard mason jars, sold in a set of twenty. The split is even: ten are sized for wide mouth jars and ten for regular mouth jars, which is a useful mix if your cupboard holds both. They are designed as a direct replacement for the metal canning lids and bands that ship with Ball, Kerr, and similar jars. The key distinction, and the one that shapes everything else, is purpose. These are storage caps. They are for covering a jar that holds leftovers, dry pantry staples, overnight oats, salad dressing, spices, or a cold drink. They are not canning lids and are not meant to create the heat set vacuum seal that pressure canning or water bath canning requires. Think of them as the lid you reach for after the food is already made, not the lid you process in a canner.
Because the set is multicolor, the caps also double as a simple labeling system. Assigning a color to a category, for example one shade for grains and another for spices, is an easy way to tell jars apart at a glance without adding stickers that peel in the wash.
Key features on paper
Here is what the listing and product specifications state for this exact set.
AOZITA Mason Jar Storage Lids (20 Pack: 10 Wide Mouth + 10 Regular Mouth)
A multicolor set of food grade plastic replacement caps listed as leakproof and dishwasher safe, built to swap in for metal canning lids on everyday jars.
Check price on Amazon- Twenty lids per pack, split by mouth size. Ten wide mouth and ten regular mouth, so a mixed jar collection is covered by a single purchase.
- Food grade plastic. The caps are molded plastic rather than metal, which is the main reason they resist the rust that eventually ruins metal discs and rings.
- Reusable. Unlike single use canning discs, these are built to be opened, washed, and reused many times.
- Listed as leakproof. The product title describes the caps as leakproof, which the maker positions for storing liquids and dressings as well as dry goods.
- Dishwasher safe. The listing states the lids can go in the dishwasher, which matters for a part you will clean constantly.
- Multicolor. The assorted colors help sort and identify jar contents.
- Broad jar compatibility. Described as fitting Ball, Kerr, and other common mason jars in the two standard mouth sizes.
All of the above are listing claims from the manufacturer and retailer, not measurements we have independently verified.
Who it is for
This set fits a specific and common household. If you already own mason jars and you use them for day to day storage rather than preserving, this is squarely aimed at you. The most natural buyers are people storing dry goods such as rice, flour, beans, pasta, coffee, nuts, and spices; people who repurpose jars for leftovers and meal prep; and anyone who drinks from a jar and wants a clean cover between sips. It is also an easy upgrade for a household that is simply tired of rusty, bent metal lids and wants a reusable cap that survives the dishwasher. The even wide and regular split makes it a sensible single buy for a cupboard that has accumulated both jar types over the years.
It is a poor fit for one group in particular: anyone who needs lids for actual canning. If your goal is to preserve food for shelf storage through a water bath or pressure canner, these are not the right product, and the section below explains why.
Strengths on paper
Several things stand out in the listing. The first is value density: a single pack covers twenty jars across both mouth sizes, so one purchase can re lid most of a typical collection. The second is durability logic. Metal discs and rings corrode, and once a ring rusts it can stain the jar rim and become hard to turn. A food grade plastic cap sidesteps that failure mode entirely, which is the practical argument for this kind of product. The third is convenience: a dishwasher safe, reusable cap is simply less fuss than tracking down a matching two piece metal set every time you want to close a jar. The fourth is the mixed count. Many competing packs give you only one mouth size, so the built in ten and ten split is genuinely handy for real cupboards that are not standardized on a single jar.
Things to check honestly
A spec based review is only useful if it also flags what the listing does not fully settle. Confirm these before you rely on the lids.
- Storage, not canning. This is the big one. These are storage lids. They are not rated for pressure canning or water bath canning and will not produce the heat processed vacuum seal that safe home preserving requires. Do not use them to can.
- Match the mouth size to your jars. Regular mouth and wide mouth are different diameters and are not interchangeable. The pack gives you ten of each, so count how many of your jars are wide versus regular before assuming the split matches your collection.
- Leakproof versus splashproof in practice. The listing says leakproof. How a plastic storage cap behaves with a jar carried sideways in a bag, or fully inverted with liquid, is worth confirming from recent buyer photos and feedback. Treat it as splash resistant for transport until you have verified a full liquid tilt holds.
- Whether a given cap has a built in gasket. Some plastic storage lids seal with an integrated liner and some are a plain screw on cap that simply covers the opening. Check whether the caps you receive include a seal ring if an airtight close matters for your dry goods.
- Dishwasher placement. Dishwasher safe plastic generally does best on the top rack, away from the heating element. Confirm the maker guidance so the caps do not warp over time.
How it compares
It helps to place this set against the two alternatives most buyers weigh. Compared with the original metal canning lids and rings, the plastic storage cap trades the one time airtight processing seal for everyday reusability. Metal two piece sets are the correct choice when you are actually canning, because they are engineered to flex and seal under heat. For simply closing a jar of leftovers or coffee beans, they are overkill and they rust. The plastic cap wins on convenience and longevity for storage, and it is reusable rather than single use.
Compared with specialty lids such as pour spout caps, sprouting lids, or straw hole drinking tops, the AOZITA set is the generalist. A pour spout lid, like the stainless flip cap style sold for dressings and drinks, does one job very well but only fits one use and usually comes in small counts. This twenty pack is the opposite approach: plain, numerous, and flexible across most storage tasks, but without a specialty feature like a built in spout or sprouting mesh. If you need a dedicated pour or drink lid, buy that separately; if you want a stack of everyday covers for a whole cupboard, the generalist pack is the better spend.
Verdict
On paper, the AOZITA 20 pack is a sensible, honest product for exactly what it claims to be: a reusable plastic replacement for the metal lids on your everyday mason jars. The even ten wide and ten regular split, food grade plastic that does not rust, dishwasher safe cleaning, and a leakproof listing claim add up to a practical cupboard upgrade for anyone storing dry goods, leftovers, or drinks in Ball, Kerr, and similar jars. The caveats are not flaws so much as scope: these are storage lids, you must match the mouth size to your jars, and you should confirm the real world leak behavior and whether your caps include a built in seal. If that matches your need, you can take a closer look at these AOZITA mason jar lids on Amazon to confirm the current pack details and buyer feedback.
Fit and canning note: These are storage lids, not canning lids. They are sized for standard regular mouth and wide mouth mason jars, so match the mouth size to the jars you actually own. Do not use them for pressure canning or water bath canning, where a heat processed two piece metal seal is required for safety.
Disclosure: This is an editorial, specification based review built from the Amazon product listing and stated features. We have not physically used or hands on tried these lids, and nothing here should be read as a hands on account. ProductPickly may earn a commission from qualifying purchases made through links on this page, at no extra cost to you.