From SEPM you can export a .msi installation package. You should be able to deploy this further down the line to new machine by using the GPOs in AD for software deployment on OUs - here some reference:
http://www.windowsnetworking.com/articles-tutorials/netgeneral/Group-Policy-Deploy-Applications.html
How to export Symantec Endpoint Protection (SEP) client install packages without any definitions or package with Basic Content.
http://www.symantec.com/docs/TECH178698