I was quite impressed by the durability of just the adhesive lined heat shrink tubing.
The heat shrink alone actually held my 10lb Fortress FX-16 anchor just fine. I then tried my 16 lb. Spade A-80 anchor and the connection failed before I could even turn around and get my camera! Still ten pounds is not bad and it should certainly keep any moisture out. Interestingly enough a yellow terminal crimped with the "el-cheapo" crimpers from the first picture held less than ten pounds in my load testing. Based on that the adhesive is stronger than a cheapo pair of crimpers.... Ouch!!
So the failure point is somewhere between 10 and 16 lbs. static load, for just the heat shrink alone.