Filed under bulk glass jars; the moulds we quote for this are pictured at the foot of the page.
Large glass jars, meaning one gallon (3.8L) and up, are bought on structure first: a filled 1-gallon jar can weigh over 4kg and a 2-gallon fermenter more than 8kg. Expect body walls of 3.5–5mm, an empty weight of 1.4–1.9kg at one gallon, and a mouth between 70mm and 120mm depending on what goes in. Before ordering, pin down the capacity definition, the finish and lid family, and how the jars will be packed for sea freight. For pantry and retail sizes below this range, see our overview of smaller wholesale storage jars.
Capacity: what "one gallon" means on a drawing
Gallon naming trips up importers. A US gallon is 3.785L and an imperial gallon is 4.546L, and many jars sold as "1 gallon" are in fact 4L nominal with a brimful capacity of 4.1–4.3L. State nominal capacity, brimful capacity and headspace separately in the enquiry.
Headspace matters most for fermentation, where 15–20% is normal practice so that foam and expansion have somewhere to go.
Wall, base and shoulder
Glass does not get stronger in step with size, so a gallon jar is designed differently from an 8oz one. A pint jar has walls of 2–3mm; a well-made 1-gallon jar has 3.5–5mm, and a heavier base again. That base often has a push-up, a concave punt that resists the hydrostatic pressure of dense contents such as honey or brined vegetables.
Shoulder radius is easy to overlook. A sharp shoulder concentrates stress and a generous curve spreads it, which explains the slightly barrel-like outline of purpose-built gallon jars.
The cost of this is weight. A good 2-gallon jar weighs 2.5–3.5kg empty. Lightweighting that works on small jars is risky at this size, because drop energy climbs with filled mass. Sound plants rely on proper annealing and 100% cold-end inspection instead of thinner walls, and can show the inspection data. When you compare offers, ask for the empty weight and the wall thickness at the thinnest point of the body. An unusually light gallon jar is more likely a liability than a saving.
Matching the jar to its use
Four groups of buyers account for most 1–2 gallon demand, and each loads the jar differently.
| Use | Typical contents | Why glass, and what it asks of the jar |
|---|---|---|
| Food processing and hospitality | Bulk dry goods, brined vegetables, sauces, prep ingredients in restaurant, hotel and catering kitchens | Odor-neutral, dishwasher-safe, and staff can see stock levels at a glance |
| Fermentation | Kombucha, sauerkraut, kimchi, hot sauce before transfer to retail packs | Inert against acidic brines that corrode metal and can leach from some plastics; needs a wide mouth and a venting lid |
| Beverage and spirits | Infused liquor, fruit wines, botanical macerations, baijiu with herbs or fruit | A traditional working production vessel; a narrower pouring mouth often suits |
| Retail and zero-waste | Dry goods at refill stations and bulk food stores | The jar is packaging, display fixture and brand statement at once; needs scoop access |
Mouth size, handles and spigots
Wide mouths of 100mm, 110mm or 120mm take whole vegetables, scoops and a hand for cleaning, and work with fermentation weights and airlocks. Openings of 70mm or 89mm pour more cleanly and take standard lug or continuous-thread closures, which suits syrups and infused spirits. Finish tolerance is critical either way: a 110mm lug finish that is even 1mm out of round will not seal reliably on a capping machine.
Two handle types are common. Swing or bail handles, built as glass-molded lugs with wire bails or as plastic-grip metal handles clipped under the neck ring, let one hand lift an 8kg filled jar. Plastic carry handles that snap over a standard 110mm lid are an inexpensive retrofit for retail packs.
Spigot jars serve beverage stations and cold-brew coffee. A hole is drilled or molded near the base and fitted with a food-grade stainless or plastic tap, which can be fitted at the plant or shipped loose. Give the tap height above the base when ordering: set too low, sediment clogs it; set too high, the bottom 500ml is wasted.
Lid families and liners
| Closure | Best suited to | Limits and notes |
|---|---|---|
| Tinplate lug cap, 70mm, 89mm or 110mm | Hot-filled pickles and sauces; vacuum-sealable and tamper-evident | Plastisol-lined versions are rated for pasteurization up to about 100°C |
| Continuous-thread metal cap | Dry goods and spirits | For products that do not need a vacuum seal |
| Swing-top (bail) with rubber gasket | Reusable fermentation or storage vessels | Tolerates hundreds of open-close cycles |
| Polypropylene screw cap | Back-of-house storage at the lowest closure cost | Not for hot fill above roughly 70°C |
Choose the liner by contents: plastisol for acidic hot-filled foods, foam or pressure-sensitive liners for dry goods, food-grade silicone for fermentation lids used repeatedly. Fermentation buyers should also ask for gasketed lids with airlock grommets. A plain storage lid cannot vent CO2, and a sealed gallon of active kraut becomes a pressure vessel.
Liner chemistry is covered in more depth on the glass jars with lids range page, and preserve packers should cross-check against the canning jar specification notes.
Packing, freight and order terms
Gallon jars are freight-heavy. They nearly always ship as bulk pallets with cardboard divider layers instead of individual cartons, and a 40HQ container typically takes 9,000–12,000 one-gallon jars depending on the packing scheme, against roughly 60,000 16oz jars. Compare suppliers on landed cost for that reason, not on the ex-works figure.
Protection means divider cells sized so shoulders never touch, layer pads between tiers, edge protectors and shrink-wrap hoods against sea-freight humidity. Ask for an ISTA-style transit test report, or at least the supplier's drop-test data, before the first shipment. A 3% breakage rate on gallon jars costs far more than the testing does.
Minimum quantities are quoted per project; they depend on the mould and the line it runs on. If you are standardizing on canning formats, the half-gallon sibling is described in the 64oz mason jar size notes. Branded or embossed jars at this scale go through custom jar mold development and decoration.
Frequently asked questions
Which sizes fall in the large jar segment?
In wholesale terms it runs from one US gallon to 2 gallons (7.6L), with 4L, 5L and 8L nominal jars common in between. The half-gallon is a transition size and is usually grouped with canning formats.
Can a gallon jar be hot filled or pasteurized?
Yes, provided it is properly annealed soda-lime glass with a plastisol-lined lug cap. Hot fill up to about 95°C and water-bath pasteurization are standard. Confirm the thermal shock rating, typically a 40–42°C delta, with the supplier before processing.
Which lid fits a wide-mouth gallon jar?
Most take a 100mm, 110mm or 120mm lug or continuous-thread (CT) finish. Measure across the outside of the threads and confirm the finish standard, because a 110mm lug cap does not fit a 110mm CT finish.