Hi @flamma,
The short answer is that the epoxy did not work reliably enough to seal our penetrators. Especially in the past two years, we have had increasing customer reports of leaking and delaminated penetrators. You can find more information with a direct response from Rusty on this topic here:
The good news is that we are extremely close to releasing our new penetrator solution, and should be making an announcement in the next few weeks! 
If you absolutely need some more of the Wetlink Thixotropic 80A epoxy, the equivalent product is Reltek B-45TH.
-Adam