Do you need to quickly and efficiently mail out checks, invoices, utility bills, newsletters, bank statements and other forms? If so, you should seriously consider removing costly envelopes and consider using a pressure sealer. Whether you are in the market for a pressure sealer, or already own one, you should consider using our Relyco Ultraseal pressure seal paper. Both the RPS811BA (blue) and RPS811W (white) pressure seal forms are extremely easy to use, hold up well and save you money. They are compatible with most pressure sealers (including formax) and are very easy for the recipient to open.