Sealed wax sells on the premise that nobody has touched it since the factory. Anything stuck on the box says somebody did. So most of this guide is about where a seal does not go, and the rest is about the three surfaces on a wax order that will take one. All three take the same 0.75" x 1.77" Serial Seal™, so the only real choices are how many you buy and what number they start at, both typed on the builder.
Do not put adhesive on sealed wax
Not on the shrink film, not on the printed box, not on a pack wrapper. Three reasons, each enough on its own.
Buyers. Plenty of collectors will not buy sealed wax that has been stickered at all, and you have no way of knowing which of your buyers are among them. Assume some are.
It reads as the opposite of what you meant. Adhesive lift, distorted film and residue on a wrapper are what a cautious buyer looks at when they suspect a pack was opened and re-wrapped. Do not hand them those signs for free.
It does not hold anything shut. Shrink wrap is a loose skin sitting over the box. The film can be worked sideways or slit along the lap seam with the seal still flat on top of it. That is the substrate, not the glue. And if you strip the wrap to seal the cardboard properly, you have destroyed the thing you were keeping.
The geometry works, which is not the same as it being a good idea
Per-face landing on a fold is (1.77 - T) / 2, where T is the thickness of the edge you wrap. A square box corner consumes almost nothing, so T is near zero and each face gets a little under 0.885". A booster pack crimp of about 0.15" gives (1.77 - 0.15) / 2, or 0.81" per face. In our own handling, folds get unreliable somewhere below roughly 0.55 to 0.58 inches of landing per face — a bench impression, not a measured threshold, so stick one on the item you actually ship and pull on it before you trust it on a hundred.
Run that against a booster box, an ETB or a pack and the fold always lands. It lands on shrink film, or on printed cardboard whose value depends on staying unmarked. Geometry was never the problem here.
Where the Serial Seal™ goes
Three targets on a wax order, all of them keeping adhesive off the wax.
The outer acrylic protector — SINGLE. If you already display booster boxes or ETBs in an acrylic case, that case is the right surface — where to seal an ETB acrylic case works through the panels and lid types in detail. Lay a SINGLE vertically across the lid-to-base joint. Laid flat there is no edge to wrap, so the 1.77" splits about evenly either side of the seam. Keep it 0.5" in from a corner so it is not over a magnet, and test one on a spare case first — some adhesives haze acrylic permanently.
The shipping box — SINGLE. For a boxed wax order the outer is usually something like 6" x 4" x 4". Put a SINGLE across the centre flap seam on the top face. Corrugated liner takes adhesive better than glossy printed board, which is worth knowing when you pick a face. A 0.75"-wide seal covers a small fraction of a 6" seam, so two at the quarter points photograph better than one alone.
Wax sold as opened or for play — FOLD or SINGLE, your call. A cracked box going out as a loose-pack lot, an empty display box, loose packs in a bag: the collector premium is already gone, so adhesive costs you nothing. Fold over the top front edge, or seal the bag at the flap edge, which is covered in how to seal a team bag.
| Target | Style | Landing per face | Note |
|---|---|---|---|
| The wax itself — box, ETB, pack, blaster | none | — | Do not seal it |
| Acrylic protector case | SINGLE across lid joint | ~0.885" either side of the seam | Test one on a spare case |
| Shipping box top flap seam, 6" long | SINGLE across seam | ~0.885" per flap half | Two at the quarter points |
| Opened box sold as a for-play lot | FOLD over top front edge |
(1.77 - T) / 2, T near zero at a square corner |
Premium already gone |
Notice what is missing from that table: the product. Every number you print on this format ends up on packaging, which is why a case, a carton and a for-play lot can all draw from one run — one prefix and one opening number, set on the builder.
Step by step
- Decide what you are selling. Sealed collectible wax gets no adhesive. Opened or for-play wax can take a seal anywhere.
- Pick the surface — case, shipping box or bag, never the wrapper — and the style. SINGLE across a joint on a flat face; FOLD only over an edge, with
(1.77 - T) / 2giving enough landing to be worth doing. - Clean and dry the spot. Dusty or waxy corrugated takes adhesive unevenly, and a half-stuck seal can peel off in transit — then the number in your photo is not on the package that arrives.
- Place it and burnish from the centre out, clear of the carrier label and any barcode. A seal under a label is invisible, and a seal on a barcode kills the scan.
- Photograph the sealed package with the date and the serial legible, write that serial against the order number, and keep both as long as you keep any other record of the sale.
What this does and does not do
A seal is numbered thin film with adhesive. It does not prove a box is factory sealed, and it does not prove a pack was not searched or weighed. If your layout carries VOID IF DAMAGED, that is a notice about the condition you are selling under, not a mechanism — the FAQ describes the stock in the same flat terms.
Somebody can peel the seal off your shipping box and stick a different one on. That is true of stickers generally and true of this one, and it is part of why the seal belongs on the outer box rather than on the wax: it is not doing structural work anywhere, so put it where it costs you nothing. What it does that a blank sticker cannot is carry a number. No two seals in your run share one, so a serial points at exactly one package. The number is only worth anything because you photographed it and wrote it down.
Whether a marketplace finds that record useful is up to the marketplace. What you control is that it points at one package instead of a general description of how careful you are.
How many do you need
Every other format counts the thing being sold. Wax cannot, because the thing being sold gets no adhesive at all. The number rides on the outer carton, so the only figure that matters is how many cartons leave your hands — not boxes owned, not packs inside them.
That splits the question before any arithmetic starts.
60 Serial Seal™ minimum · From $30.00 · As low as $0.30 each in bulk. No setup, die, or design fees. Commercial license & copyright included.
If you buy wax to hold it, you need almost none. Forty sealed boxes on a shelf are forty boxes you are not sealing. Seals come out only for the thing that goes back out the door — a trade, a box sold to fund another — and the 60-seal minimum at $30.00, 50c each, covers that for a long time.
If you ship, count outbound parcels, and remember that a carton is a carton: a twelve-box case going out as one parcel takes one seal, the same as a lone ETB. Eight parcels a week is about 416 in a year, which rounds to 420 in twelves and prices at $189.00, 45c a seal; stepping up to 600 for $240.00 brings the rate to 40c and the extra 180 carry another five months. Seal an acrylic case as well on most of those and the figure roughly doubles to 832 — round to 840 at $336.00, still 40c each, and the ladder keeps stepping: 36c at 1,200, 33c at 2,400 and 30c at 4,200, which is the floor — a heavier year just rides the rate down. Forty-odd cents either way, on a parcel you were already taping shut; the rate belongs to the quantity, with nothing to enter. Self-serve tops out at 10,008 — for bigger runs, ask us for a quote.
Common mistakes
Sealing the shrink wrap "just on the corner." A small seal has the same problem as a large one. The film still moves independently of the box.
Sealing an ETB across the lid overlap. The lid telescopes over the base and the whole assembly is wrapped, so you are sticking film to film and marking a collectible box for nothing.
One seal on an acrylic case. A case on a shelf gets photographed from both sides. One seal on each of two opposite faces keeps a number in frame whichever way it is shot.
Putting the seal where the shipping label goes. On a small box the flat top face is exactly where the label lands. Move the seal, not the label — the full package routine is in how to seal a shipping package.
Questions people ask
Can I put a Serial Seal™ on a sealed booster box?
You can, and you should not. Seal the shipping box or an outer acrylic case instead.
Does a Serial Seal™ on the shipping box prove the wax inside was sealed?
No. It records that you shipped a package carrying that number on that date. What was inside is established by your photo and your record, not by the seal.
What if the buyer says the box arrived opened?
Show what you have: the dated photo of the sealed package with the serial visible, and that serial logged against the order. Nobody can promise you an outcome. The point of the number is that your account of what you shipped is specific. There is more on the return fraud page.
How many Serial Seals™ do I need for a wax order?
Two per package if you are sealing a shipping box and a case, on opposite faces; one if it is only the carton seam. Count cartons rather than cards; the arithmetic is a few sections up.
Wax is the one format where the seal stays off the product; the number rides on the carton instead. If you also ship singles and slabs, the format-by-format guide has those placements. Sequentially numbered seals start at the 60-seal minimum for $30.00, 50c each, and fall to 30c each at 4,200, which is as low as the posted ladder goes — a gallery design on the builder, or your own logo here.
Serial Seal is an independent printer. We are not affiliated with, endorsed by or sponsored by PSA, Beckett, CGC, SGC, Ultra Pro, BCW, eBay, Whatnot, TCGplayer or any card manufacturer. Brand names are used only to describe the products they make. Nothing here is legal advice.