Wafer Seals are designed for packing and mailing projects like seal envelops, folded letters, and small folding boxes, There are many label manufacturers selling of wafer seals, but you will not find the same quality seal from other suppliers. Our Wafer Seals is designed to comply with USPS Tabbing Requirements! Don't forget you will get Free Shipping all over the United States on any of our items, No minimum order required!