Pressure Seal Checks, Forms, Self-Mailers

Pressure seal is a type of self-sealing document used to mail checks, statements, and other forms without an envelope. Pressure seal check/form is constructed with a layer of cohesive that is securely bonded when folded and sealed by a pressure sealer machine. The finished product is a durable, secure, and tamper-evident self-mailer. Pressure seal technology saves your business time and money when preparing mail, and eliminates the need to print and stuff in to an envelope. CheckSeal provides a variety of pressure seal check stock and forms that’s available for order online.

Pressure Seal Form Visualization
How it works: Pressure Seal Form

Examples forms you can mail using pressure seal:

  • Payroll & AP Checks
  • Utility bills
  • Medical bills
  • Transcripts
  • Tax forms (W-2, 1099, ACA)
  • Notices
  • Invoices
  • Statements
  • PIN information
  • Integrated Cards/Labels
  • Direct Mail

How Does Pressure Seal Work?

First, pressure seal checks are imaged with a laser printer and compatible software. Next, the stub checks are loaded into a pressure sealer feed system (High volume systems run with a laser printer inline to a pressure sealer). During the folding process, the sealer machine aligns patterns of cohesive along the edges of the form. When the folded form passes through a series of sealing rollers that apply pressure, the cohesive is activated, creating a seal. The final product is a sealed mailer that is opened by tearing along the perforations.

The Pressure Seal Check Process
Pressure Seal Check Process

Order Pressure Seal Stock & Equipment Online

Stock Pressure Seal Forms

Pressure Seal Forms

Browse pre-finished forms by size, weight, color, fold, and other features. Print your designs on our blank stock forms for low cost and efficient mail processing. Be sure to check out our poly-film window and 2-way return mail forms.
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Pressure Seal Check Stock

Pressure Seal Checks

Get the enhanced security of a laser check without the need for an envelope. Our check stock includes high security void pantographs, watermarks, microprinting, & warning bands. Also, we have the capability to custom imprint logos and MICR numbers on payroll checks, A/P checks, rebate checks & more.
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Pressure Seal Equipment

Pressure Sealers

Skip the manual folding, stuffing, and closing of envelopes. We provide a wide selection of pressure seal equipment for low, mid, and high volume mail processing. Browse our catalog to find low-volume pressure sealers that fit on a desktop to high-volume production systems capable of speeds up to 80k per hour. Consult with a CheckSeal specialist to determine the right machine for your application.
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Direct Mail

Pressure seal forms are sometimes called “Snap Packs” in the direct mail context. Snap Packs offer great value when compared to mailing with traditional envelopes. Snap pack pressure seal consistently gets higher open rates due to customizable designs on the front/back plus several built-in features. Additionally, a single high volume pressure sealer is capable of processing as much as three folder/inserter machines. For high-volume mailing requirements, CheckSeal provides 2-wide continuous pressure seal rolls that yield up to 80K/HR.

Pressure Seal Mailer Add-Ons

Pressure Seal FAQs

Pressure Seal is a system comprised of a one-page self sealing document and/or a folder sealer for sealing the document. It is commonly used for mailing invoices, statements, and other confidential documents.
The form is sealed though a process of folding the form on a pressure seal folder/sealer. Folding the form aligns patterns of cohesive which have been pre-applied to the document during manufacturing. Once folded, the document travels through a series of sealing rollers inside the folder/sealer. These rollers apply pressure to the form, which activates the cohesive and in turn creates a secure fiber tear seal.
Proper cohesive chemistry and application of the cohesive to the form are key. Accurate perforation registration ensures proper alignment of the perforations and cohesive pattern during folding. Other important factors are paper type, print quality, packaging and storage.
Product must be kept in its original wrap to ensure proper moisture content of the paper is maintained. Product should be climatized in the imaging environment at least 48 hours prior to imaging. In general, forms should be put through the folder sealer on the same day that they are imaged.
Only specific papers are compatible with Pressure seal technology
Co-hesive patterns are designed for postal/printer considerations and to accommodate forms manufacturing process. Other patterns allow for more panels, floating sheets, and different ways of opening the sealed document. In general, one may stick with a few of the basic fold and cohesive patterns for a large share of the pressure seal applications. However, there are unique patterns which may offer distinct benefits to the end user.
Normal shelf life is from 6 months to a year with proper packaging and storage. Forms that are left exposed to the air will see a rapid deterioration in sealing performance. Leftover forms should be placed back inside their cartons interior bag until the next use.
Some factors to consider:

  • Faster output of finished mail
  • Cost/Availability of traditional envelopes
  • Inserter lines are slow and more expensive than sealers
  • Conversion Costs
Take into account the duty cycle per month, volume per print run, and seasonal fluctuations. If your application is critical, you may need 2 machines for redundancy in the event of down time. Other considerations are: the length and width of the form, the fold depths, paper basis weight, and ease of use. Choose a well built machine with a heavy duty sealing section that will last. Total weight of the folder/sealer is a good indication of a well built machine.
Simplex is a one-sided imaging. Duplex is two-sided imaging. The form construction and layout will determine whether it is duplex or simplex. For example most z-fold just require simplex imaging because the only printable area is on one side.

Work with a Pressure Seal Expert

CheckSeal has over 30 years experience providing pressure seal checks, forms, machines, & custom solutions for clients nationwide. Whether you’re looking for a complete pressure seal system or want to outsource your mailings, we have the right solution for you.