You probably don't want to use superglue to fasten sorbothane. I have just finished 3 days of listening to the Stax SRXIII pro damped with pieces of 70 duro sorbothane on the covers, fastened by superglue. On the other set of covers the sorb is fastened using the self-stick provided by Sorbothane. I fastened the sorb by applying superglue to the the side of the sorb that did not have the self-stick.
I first listened with the superglued covers about an hour after the gluing and immediately felt the sound was harsh and tinny in the midrange. After several days, the overall sound improved but the tinniness remained and the soundstage seemed narrower. On the plus side, the bass seemed more impactfull and possibly deeper. It should be noted that the SRX has a somewhat limited deep bass.
On balance I am not planning on using superglue as a fastening agent. However it may be worth someone's while to experiment further, possibly if you need better bass.
I had expected better results from superglue, thinking that it would create a better fastening of the sorb to the metal covers and that this would translate to more effective damping. However as with many things in the real world, intuitions can be wrong. Does this mean that better grip of sorb to its underlying substance is unimportant? Not necessarily, since superglue forms a sort of crust and possibly this is acting as a barrier, preventing some energy getting to the sorb.
So for the moment at least I have no evidence that a strong glue like superglue is better than the self-stick often supplied by Sorbothane. (Actually the self-stick turns out to be very thin double sided tape. )
As regards the issue which has come up recently regarding the effect of compressing sorb, this evidence at least suggests that the reason compression may help is because of the compression itself, not because it pushes the sorb into better contact with the surface it is glued to. However, I don't think this is a strong conclusion, given the "crust" issue. In other words there may bet a better glue than the sorb self-stick and superglue which doesn't form a crust. And this might still sound better.