Glue selection is rather poor here...I had tried both 3M and Permatex one, as they were widely available and they seemed to be the same stuff. I had some problems with the adhesive not bonding strong on the rubber but it must had been my fault. A friend pointed that I should have sanded lightly the rubber seals beforehand, which I never did (I am not good at anything not oil-or cable-related!).
In the past I had used Bostik, which was a great thick-flowing glue but I didn't manage to find it here (it had arrived with some Volvo parts from Sweden).
Anna Potts, I sent you a PM.