Rear Window Glass Adhesive 365gt 2+2

Not really sure of the criteria required for this application, but Permatex makes an excellent clear flowable windshield sealant.

As stated, it will flow into a small void, so further disassmebly shouldn't be necessary.

To avoid unnecessary cleanup, use blue (3M) painter's tape where you don't want sealant, and to keep it in the places you do.

http://www.permatex.com/documents/tds/Automotive/81730.pdf

http://www.acehardware.com/product/index.jsp?productId=1419004

 

Most auto glass is set in either a continuous gasket or on a heavy urethane tape. With tape a seal of silicone is applied over the top of that. I can't remember what 365 glass installation looks like but it sounds like you need tape. Any automotive glass shop will have it in stock.