AVERY 51068 closure labels, round transparent permanent adhesive, 18 mm diameter, 1 pc

AVERY 51068 closure labels are round, transparent sealing stickers with a permanent adhesive and an 18 mm diameter supplied as a single piece. They are intended for reliable fixation on paper and many smooth surfaces, making them suitable for sealing envelopes, small packages, folders, and hand-made products. The simple transparent design preserves visibility while providing a secure seal for everyday office, shipping, and craft tasks.

Advantages

These round transparent closure labels combine a discrete appearance with permanent adhesion, allowing neat sealing without obscuring contents or design. The 18 mm diameter is compact yet sufficient to secure lightweight closures, and the single-piece supply lets users apply exactly the number of seals required. The labels adhere to paper and several smooth surfaces, offering consistent performance for routine office and craft use.

Suitable for

• Sealing envelopes and invitation cards
• Securing small parcels and padded envelopes
• Closing folders, document sleeves and sample packets
• Finishing hand-made products, packaging and gift wrapping
• General office, shipping and craft applications

When it may not be suitable

These labels are designed for light- to medium-duty sealing and are not intended for heavy industrial bonding or use on rough, porous, or heavily textured surfaces where adhesion may be reduced. They are not designed to provide tamper-evident security for high-value shipments.

Key specifications

• Shape: round
• Color/finish: transparent
• Adhesive type: permanent
• Diameter: 18 mm
• Supply quantity: single piece
• Suitable substrates: paper and many smooth surfaces

How to use

Ensure the surface is clean, dry and free of dust or oil. Peel the label from its backing and press it firmly onto the area to be sealed, smoothing from center outward to improve contact. Apply at room temperature for best adhesion. For irregular or curved surfaces, press carefully to avoid air pockets; avoid stretching the label when applying.

What to consider before purchase

• Confirm the 18 mm diameter meets your sealing size requirements
• Check that the intended surface is smooth and clean for reliable adhesion
• Consider that a single-piece supply is for occasional or custom use, not bulk automated application
• Permanent adhesive is not designed for easy removal or repositioning

Usage recommendations

For consistent results, store labels in a cool, dry place and apply them at normal room temperatures. Test one label on the intended substrate if uncertain about adhesion or surface compatibility before applying multiple seals.