How the Five Compare on the Numbers
Capacity runs a long way here. Oggi is a single canister of 62 fluid ounces. Tlence gives six tins of 23 ounces each, Zopeal ten of 16 ounces, and TRISCO six of 8 ounces. JOYLULU publishes no capacity at all, only a body of 3.3 by 2.5 by 4.8 inches. So the choice is really between one large jar for a house tea and a set of small ones for a shelf of different leaves.
The second figure is the seal, and it is described five different ways. Oggi uses a locking clamp onto a silicone gasket. Tlence uses a rotary lid that seals on a one third turn and ships a sealing film and strip as well. Zopeal and TRISCO both stack an inner lid under an outer one. JOYLULU uses a press on lid making metal to metal contact and states that no rubber gasket is needed.
What the table cannot tell you is whether any of these seals actually holds. Not one maker publishes an oxygen transmission figure, a gasket hardness, or a test of any kind, and three of the five do not even publish a gasket. The words airtight and double sealed appear across all five listings with nothing behind them, so the mechanism is all there is to judge, and mechanisms are judged by how they fail.
Five Different Ways to Close a Tin
A Clamped Gasket Against a Press Fit
Oggi and JOYLULU sit at opposite ends. Oggi uses a wire clamp that pulls a lid down onto a silicone gasket, which is the same closure a preserving jar uses, and it is the only seal here that applies a stated compression rather than relying on friction. Its lid is also clear and BPA free, so the leaves are visible, which no other pick offers.
JOYLULU argues the opposite case: a precision press on metal lid making a metal to metal seal, with no rubber gasket required. There is a real argument for that, because a gasket is the part that perishes and absorbs aroma, and a metal rim does neither. The cost is that a press fit loosens with use and JOYLULU publishes no replacement, no gasket and no capacity figure to plan around.
Two Lids, or One Lid That Turns
Zopeal and TRISCO both use the traditional tea caddy answer, an inner lid pressed into the neck with an outer lid over it. Zopeal describes the pair as reducing exposure to air, light and moisture, and TRISCO says the double sealing stops the leaves getting damp or mouldy. Two lids also mean the outer one can be opened for a scoop without breaking the inner seal, which is the practical benefit neither listing mentions.
Tlence takes the only mechanical approach: a rotary seal that closes on a one third turn, plus a sealing film and a sealing strip supplied in the box. A turning seal wedges rather than presses, which is more repeatable than a press fit, and the film is there for a tin you are filling and not opening again soon. It is the most equipment of the five for a single closure.
Capacity, and How Much Tea That Really Is
From 8 Ounces to 62
The numbers on these tins are volumes, not weights, which is why they look so large for tea. Oggi at 62 fluid ounces is a canister for a tea you drink every day, or for tea bags in quantity. Tlence at 23 ounces and Zopeal at 16 are single caddy sizes. TRISCO at 8 ounces is a sampler tin, big enough for a 50 gram pouch and little more.
Loose leaf tea is light and bulky, so volume is the right unit even though it reads oddly. A whole leaf oolong occupies several times the space of a rolled gunpowder green at the same weight, which is why a tin rated in ounces of volume tells you more about what fits than a gram figure would. None of the five says which kind of leaf its rating assumes.
The Two Makers Who Publish Grams
Zopeal and Tlence are the only picks that convert volume into tea. Zopeal says its 16 ounce tin holds about 75 grams of tea, and Tlence says its 23 ounce tin holds more than 75 grams. Those two figures together are the most useful thing on this page, because 75 grams is roughly a standard retail pouch and it anchors every other capacity here.
Work outward from that and the shelf plans itself. If 16 ounces of volume is about 75 grams, then TRISCO at 8 ounces takes half a pouch and Oggi at 62 fluid ounces takes something close to four. Neither Oggi, TRISCO nor JOYLULU publishes a gram figure, and JOYLULU publishes no capacity at all, so those are estimates from the makers who did the arithmetic.
Living With a Shelf of Tins
Labels, Finish and Washing
A set of identical opaque tins creates a problem the moment the second one is filled, and only TRISCO solves it: six tins arrive with a pen and 12 PVC stickers to write on. Oggi solves it differently with a clear lid you can see the leaves through. Tlence, Zopeal and JOYLULU supply neither, so a black or white tin holds an anonymous tea until you label it yourself.
Washing is the other thing to settle before buying. JOYLULU states plainly that the tin should be wiped with a cloth and not washed with water, and Oggi asks for a damp cloth only. TRISCO is the one pick that invites water, saying to wash with warm water and dry with a cloth before first use. Tlence and Zopeal publish no cleaning instruction at all, and tinplate rusts where a coating is scratched.
One Set Left Out, and Two Contradictions
A 12 pack of 8 ounce tins was left out of this comparison because its listing cannot agree with itself. The title calls them square black metal tins and the feature text describes a matte white coating and gives a diameter of 2.5 inches, which is a round measurement. Its seal is described only as a lid with good sealing. Twelve tins for the shelf is attractive, but not from a listing that contradicts its own shape and color.
Two picks carry smaller contradictions worth knowing. TRISCO publishes a height of 3.74 inches in its size field and 9 centimeters, or 3.54 inches, in its own feature text, and I have used the maker’s sentence. Oggi’s title gives 5 by 7.5 inches while its dimension fields read 7.75 for two of three, so the 7.5 in the title and the size field is the figure on this page.
Which One Fits Your Kitchen
The house tea you drink every day. Oggi is a single stainless canister of 62 fluid ounces at 5 by 7.5 inches, closed by a locking clamp onto a silicone gasket, with a clear BPA free lid so you can see the level. Wipe clean with a damp cloth, and no gram rating is published.
The tea you are sealing away for months. Tlence gives six 23 ounce tins with a rotary lid that seals on a one third turn, plus a sealing film, a sealing strip and an inner pocket. Its own figure is more than 75 grams of tea per tin, in food grade tinplate with a white finish.
The shelf of ten different leaves. Zopeal supplies ten black tinplate tins, each about 4.7 inches tall by 3 across, 16 ounces, holding about 75 grams of tea behind an inner lid and an outer lid. No labels, no cleaning instruction, and a published 2.29 pounds for the whole set.
The taster working through samples. TRISCO gives six 8 ounce tins, 3.54 inches tall by 2.95 across, with double lids, a frosted finish that resists fingerprints, and a pen and 12 stickers so each tin can be named. It is also the only pick that invites washing in warm water.
The corner shelf with no room to waste. JOYLULU is a single square tin, 3.3 by 2.5 by 4.8 inches at 0.2 pounds, with a press on lid sealing metal to metal and no gasket to perish or hold aroma. It publishes no capacity, and it must be wiped rather than washed.
What We Could Not Verify
Every listing here claims to be airtight, and not one of them publishes anything that would let you check it:
- Any seal test, oxygen transmission figure or gasket hardness, on any of the five.
- A stated capacity for JOYLULU, which publishes a body size and no volume at all.
- A gram rating for Oggi, TRISCO and JOYLULU. Only Zopeal and Tlence convert volume into tea.
- Whether the Zopeal and TRISCO inner lids are replaceable, or what they are made of.
- Any cleaning instruction for Tlence and Zopeal, on tinplate that rusts where the coating is broken.
- A published weight for Oggi, Tlence and TRISCO, and a per tin weight for Zopeal, whose figure covers all ten.
