Buying guide · Updated October 2026 · By the OfficeRated team
Pressure Sealers: A Buying Guide
A pressure sealer folds a printed pressure-seal form and seals it with pressure, turning one sheet into a ready-to-mail self-mailer. It replaces stuffing and sealing envelopes for checks, invoices, statements, notices and tax forms.
What to look for
- Monthly duty cycle. The number of forms the maker says the machine is built to process in a month. Pick a model rated above your busiest month, not your average. Some makers don't publish a figure.
- Speed. Usually rated in forms per hour (some makers rate per minute) on a standard letter-size form with a Z fold. Real throughput depends on the form and fold.
- Feed capacity. How many forms the hopper or feed table holds. A small drop-in hopper needs refilling often; an elevator table or pile feeder runs longer unattended.
- Form size and fold types. Check that the machine takes your form length (11" or 14" is common) and the fold your forms are printed for: Z, C, V (half), EZ/EC (uneven) or double parallel.
- Fold setting. Manual fold plates are set by hand against printed marks; automatic models set the plates for you and can store custom jobs.
- Stand-alone or in-line. Stand-alone sealers process forms you have already printed. In-line systems attach to the back of a laser printer so forms are printed, folded and sealed in one pass; they only work with the printers the maker lists.
- Forms. Pressure sealers only work with pressure-seal forms, which have a pressure-activated adhesive printed in the right places for the fold. Ordinary paper won't seal.
Types of pressure sealer
Desktop and tabletop machines sit on a desk or stand and take forms from a hopper or elevator feed table. In-line systems connect to a specific laser printer. Production machines are floor-standing, with high-capacity feeders, for mail centers and print shops; at least one is a seal-only unit added to an existing floor-model folder.
Models in the catalog
The pressure sealer catalog lists 31 current models with manufacturer specifications, sources and photos: Formax (11) · FP (5) · MBM (5) · Paitec (10). Brands are listed alphabetically.
We don't name a “best” model or rank brands. The right machine depends on your volume, forms and printers, so filter the catalog on the specs above. We don't list prices; these machines are mostly sold through authorized dealers.