Envelope Moisteners

Find Envelope Moisteners and sealers designed for fast and consistent envelope sealing in professional mailrooms. Built for reliable performance and easy operation in high-volume environments. These sealing machines streamline your mailing workflow. All units include OEM warranty and free shipping on qualifying orders.

Professional envelope sealing machines for mailroom operations.

Envelope moisteners seal outbound mail quickly and hygienically, without anyone licking envelopes or wrestling with a sponge and a saucer of water.

For any office sending more than a handful of envelopes at a time, they are a small purchase that removes a genuinely unpleasant job.

What we stock

We stock the AquaBall AQ701G, which uses a rolling ball applicator, and the AquaPad LM3 and LMS1 pad moisteners. All three are refillable desktop units suited to office and mailroom use.

How to choose

Ball or pad — A ball applicator suits running envelopes past it quickly; a pad suits a steadier pace and larger flaps.
Refill capacity — Larger reservoirs mean fewer interruptions during a big mailing.
Desk footprint — These are small units, but check where it will sit relative to your sealing workflow.
Leak resistance — A sealed reservoir matters if the unit shares a desk with documents.

Frequently asked questions

What is the difference between the AquaBall and the AquaPad?

The AquaBall uses a rolling ball to apply moisture as you pass the flap over it, which is quick for a run of envelopes. The AquaPad uses a moistened pad, which suits a steadier pace and wider flaps.

Do they work on self-seal envelopes?

Self-seal envelopes do not need moistening at all. These are for traditional gummed-flap envelopes.

What do I fill them with?

Plain water is normally all that is needed. Check the product page for any manufacturer guidance on your specific model.

Will they over-wet the envelope?

Used as intended they apply a controlled amount. Over-wetting usually means moving too slowly across the applicator or overfilling the reservoir.