Gummed envelopes

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Discover our Gummed Envelopes , featuring moisture-activated adhesive flaps for a secure, tamper-evident seal. Crafted from premium uncoated or kraft paper (80–120 g/m²), they’re perfect for formal mailings, invoices, cards, and legal documents. The classic gum seal provides a reliable bond that won’t lose tack over time. Available in C4, C5, DL, C6, and custom sizes, with window or non-window options. Bulk packs offer cost savings—shop now for professional mailing solutions!