You can seal an existing document in Windows Explorer as follows. The same procedure can seal Microsoft Word, Excel, Powerpoint, PDF, HTML, and various other document types.
Right-click on the document in Windows Explorer, select Seal To and then Select Context.
A context selection dialog appears:
The dialog lists security contexts to which you have the right to seal documents. If you think the list is incomplete, you can use the Refresh Contexts button to update it.
Select the context that you want to use and click OK.
A sealed document is created in the same folder as the selected document.
Alternatively, integrated Microsoft Office support provides sealing options within Microsoft Office applications. In each case, the option requires the selection of a context as shown above.