Seal boxes, envelopes, or tab mailings with these wafer seals. The seals come in clear acetate, frost white paper, white paper and can be used in a dispenser. The clear acetate wafer seals let your graphics show through. Perforations facilitate easy opening. The frost white paper keeps envelopes shut when mailing, yet opens with a flick of a finger. The white paper wafer seals stand out on all materials, distinguishing the opening point of the package.
The Untied States Postal Service requires that all folded mail peices be correctly "tabbed" closed.