In article ,
says...

Superglue is the only option.


Rubbish.

Glazing tape works well. It can be retro-fitted but the point that Andrew
makes about thickness is valid. Using tape will decrease the space
available for the sealed unit and so it might be necessary to use new
glazing beads as well. A friendly local window fabricator will supply and
advise.

--
Ziggur

"S'ils te mordent, mords-les"