Security Envelopes

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Security Tamper Evident Bags STEBS

Keepsafe, single use, tamper evident security envelopes for transporting valuable or sensitive goods or documents. Available in white opaque or clear polythene.  Weatherproof, waterproof, burst, tear and puncture resistant, they feature a peel & seal, tamper evident closure, are sequentially numbered with a matching tear off receipt and are supplied in a range of industry standard sizes. Sold in packs of 500, these items are usually delivered within 2-3 working days of receipt of order. 

Security envelopes


 Internal Size = 160x 260 mm

500 envelopes for £139.00 

Internal Size = 225 x 305 mm

500 envelopes for £195.00

 Internal Size = 340 x 430 mm

500 envelopes for £251.00

Check out our specials page for smaller quantities.


* Please note, these products are only available to purchase online, for UK mainland customers. If you wish to purchase from outside this area, CONTACT US FOR A RAPID QUOTATION. All prices above exclude VAT & carriage, which is added at checkout.

Do you need pricing for a customised version ? 

Perhaps you require price breaks for bulk purchasing ?   Contact us for options and pricing. – simple security solutions.

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As we have no control over the application and conditions our products are used in. we maintain it is the responsibility of the end user to determine that this is the correct product to suit your requirements. To that end we offer free samples and telephone guidance, please do not hesitate to contact us if you need help.