If your referring to using a press on cap, the best you can hope for is flat beer. The worst is not finding the pieces of glass that broke off the "threads" before you take a drink (I've inadvertently tried capping several and usually am notified by the sound of glass crunching) . I have heard of people using the original cap to screw back on, but IMO it would be a crap shoot at best.
Whiskey's too rough, champagne costs too much, vodka puts my mouth in gear
This little refrain should help me explain as a matter of fact I like beer - Tom T Hall