Extra-strong adhesive seal labels made of non-aging polyester foil. firmly shuts packaging as original closure, for example, for mailing out products in bulk or a variety of other applications. Exceptionally strong adherence, suitable for labeling damp surfaces as well as crucial surfaces like cardboard. Weatherproof, aging-resistant, able to withstand oil and dirt, and wipeable with water. For manual inscription using foil pens and pencil. Sealing labels made of transparent polyester film with extra-strong adhesive. Water, oil, and dirt repellent, and temperature-resistant. strong adherence, even on delicate or wet surfaces. for sealing products, packaging, bulk goods, and numerous other things. can serve as the initial closure as well. for writing by hand using a pencil, ballpoint pen, or rollerball pen. * Please use HERMA Seal labels on A4 sheets; they are not appropriate for PC printers.