Our Relyco pressure seal checks provide a fast, secure and effective way to print out and mail checks. These pressure seal checks use special pressure-activated glue pockets that when burst seal the check shut. This is secure and tamper proof. Our Relyco pressure seal checks are designed to work hand-in-hand with Formax brand pressure sealers. Simply load a stack of these pressure seal checks in your laser or inkjet printer and print out the check information. Once run through a pressure sealer, these checks are ready to head out to the post office. Choose from a variety of fold styles and designs, depending on what you are doing. Buy yours today!