Envelope C5 with silicone tape Office Products HK 162×229 mm 90 gsm 10 pcs brown

Envelope C5 with silicone tape Office Products HK 162×229 mm 90 gsm 10 pcs brown is a pack of ten kraft-style C5 envelopes designed for sending documents, letters and invoices that fit the C5 format. Each envelope is manufactured from 90 gsm paper and has a pre-applied silicone adhesive tape across the flap for quick and secure closure without the need for water or additional glue. The brown colour provides a neutral, professional appearance suitable for routine office and administrative correspondence.

Advantages

The 90 gsm paper weight balances durability and flexibility, reducing the risk of tearing while keeping postage costs moderate. The silicone adhesive tape simplifies sealing: press the flap to the body for an immediate, reliable bond and avoid fumbling with moistening or glue. The pack contains ten envelopes, offering a small reusable stock for light to medium mailing needs and storage in a drawer or desktop organiser.

Suitable for

• Mailing A5 documents folded once or single-sheet A4 letters folded once into C5
• Sending invoices, statements and payment reminders
• Internal office correspondence and administrative paperwork
• Short-term document archiving and physical filing

Key specifications

• Format: C5 (162 × 229 mm)
• Paper weight: 90 g/m²
• Closure type: pre-applied silicone adhesive tape
• Colour: brown (kraft-style)
• Quantity: 10 envelopes per pack

How to use

Insert the folded document or letter into the envelope so it sits flat against the bottom edge. Peel off the protective strip from the silicone adhesive tape on the flap, then fold the flap down and press firmly along the edge to ensure full contact and a secure seal. Store unused envelopes flat in a dry place to preserve the adhesive tape and paper condition.

Usage recommendations

For best results, avoid exposing sealed envelopes to high humidity or direct sunlight for prolonged periods. Use these envelopes for standard documents and invoices; for heavy or bulky contents consider using a heavier-weight envelope or courier packaging. If additional security is required, apply a tamper-evident sticker or use reinforced mailing methods.