Titanium handlebars.

[Oldfentiger]

I have no affiliation with Loctite, however I used to sell the stuff back in the '80s.
If Loctite are describing 603 as a permanent bond, then you would usually need to resort to a blowtorch to defeat it.
Needs to be correctly applied though.
I remember selling one product, may even have been 603, that would substitute for a key/keyway for shaft location.

 

[Profpointy]

Loctite 603 is a permanant bond so the loctite man says. Its an anerobic adhesive that starts to bond after about 10 mins so plenty of time to get the parts sorted. any excess just wipes off with a rag as it can't cure.

having looked at the picture again I'd recon shim not loctite - despite my sugesting the latter. For a conventional handlebar slipping, shim is the proper engineering solution. And to smokin' joe who's a bit sceptical, there's a great chapter in Zen and the art of motorcycle maintenance describing this very problem.

Loctite make a range of excellent products including the type for sticking shafs into holes - but your problem is a slightly differe t

 

[screenman]

If it has split in it I doubt if it was ever bonded. When something is bonded on it is normally heated before sliding down the bars, it would not have a split in it for very obvious reasons.

 

[raleighnut]

As I suspected its a crappy stem not clamping hard enough.

 

[andrew_s]

The bars are dead straight so rotation is no problem,

Just make a note to never fit any bar ends.

 

[Smurfy]

If you need loctite, something must be wrong. When the shim fits the bars, and the outside of the shim fits the stem, everything should be solid without loctite. Has the stem been changed to one that is the wrong size for the bars/shim?