Login   |   Secure Purdue > Best Practices

Sealed

“Sealed” means that an envelope is secured in such a way that tampering would be indicated upon receipt of the envelope, such as using tape across the envelope flap, sealing a self-adhesive envelope, placing a stamp or other sealing object across the envelope closure, etc.  If you receive a Restricted document, and it appears that the envelope has been tampered with, immediately notify the sender of the document.