Best current price£18.97from Refresh Cartridges
Shopping.co.uk recommended and popular offers
Refresh Cartridges£18.97Visit shop Sealed Air Mail Tuff MT3 - LL Durable Mailing Envelopes 250 x 350 mm Pack 100
Visit shop3 offers from £18.97 - £53.99
View price history by clicking the chart icon.
Sealed Air Mail Tuff Mailing Envelopes (MT3) are designed for businesses and individuals needing secure, durable transport for non-fragile items. Their key benefit is superior protection against weather and tampering, ensuring package integrity. A potential caveat is their unsuitability for fragile goods due to their rigid, non-padded construction. These puncture and tear-resistant polythene envelopes feature a tamper-evident closure system and a write-on surface, making them ideal for secure mailings.
| Model Part Number | MT3 |
|---|---|
| Brand | Sealed Air |
These envelopes are weatherproof and water-resistant, but they are not designed to contain liquids if the primary container fails. They are best suited for dry goods.
No, these are tamper-evident envelopes. Once sealed, any attempt to open them will leave visible signs of tampering, making them unsuitable for reuse if security is a concern.
Due to their lack of padding, these envelopes are not suitable for fragile items such as glass, ceramics, or electronics that require significant shock absorption.
The tamper-evident closure system is designed to show clear visual evidence of unauthorized opening, such as tearing or residue left behind, indicating that the seal has been broken.
They are described as weatherproof and waterproof, meaning they provide strong protection against rain and moisture during transit.
Microns refer to the thickness of the plastic material. 45 microns indicates a relatively thick and durable polythene construction, contributing to its puncture and tear resistance.
The surface is designed to be written on. Permanent markers or ballpoint pens are generally recommended. Inkjet printing and franking are also supported, but results may vary by device.
Ensure the sealing surface of the envelope and the adhesive strip are clean, dry, and free from dust or debris before pressing firmly to seal.
Allow ink to dry completely before handling. Use permanent markers or pens specifically designed for plastic surfaces for best results. Test inkjet printing on a small area first.
While highly resistant, extreme force can still cause tears. Ensure the item fits comfortably without overstuffing and avoid sharp corners pressing directly against the envelope's interior.
These mailing envelopes require no setup; they are ready to use straight from the packaging. Simply insert your item, ensure it is suitable for the envelope's dimensions and protection level, and seal using the integrated tamper-evident closure system. The write-on surface is compatible with most standard ballpoint pens, permanent markers, and is advertised for inkjet printing and franking, though testing with specific equipment is recommended for optimal results.
Care Instructions:
