Looking for a way to speed up your mailing system? You’ll need an envelope sealer you can always rely on. We can help you choose the right machine for your needs with this category of premium quality Formax Envelope Sealers. Designed to improve your organization’s day to day mailing system significantly, the Formax FD 430 Envelope Sealer can seal up to 18,000 envelopes per hour. It has an infeed and outfeed capacity of up to 4.5" stack height, with a package thickness of up to 16mm. Using this machine, you can not only seal envelopes at a high speed, but also have them neatly stacked in the outfeed tray, ready for mailing.