Seals-Mailing Tabs, are Convenient, inexpensive and intended to seal self-mailing newsletters, brochures, mailing projects like enveloping, and small boxes. They are self-adhesive labels. The labels must be placed in specific areas, generally adjacent to the edges, so they do not block any official mailing bar codes or address information. Our Wafer Seals have a Black sensor line between the labels (on liner only, not on label) and are Easy to peel off from the roll. At Quality Paper we have a huge inventory of Wafer Seals and can customize your order to meet your size and color. You can be assured that we will deliver your product beyond all your expectations.