As i told one chap use that 'neo' stuff, again i cant remember the name sorry, but there was a thread 2 weeks ago.

The stuff is used in wetsuits and i found it lasted quite well, puncture repair kit stuff and other glues will not last 5 minutes! - i have tried.

 

mine is like that on both sides - dont worry about it - it does not leak just put up with it

 

thanks ive contacted a few diver mates and they have put me in the right direction thanks tom that did give me heart