Worried.....
I just copied what Hurnleft did:
For me the tech specs don't really tell me much other than its probably alright...any other views?
Looks like this isn't good enough for areas that touch fuel, however as the aluminum pipe is a push fit and the sealant is around the outside edges, the amount of liquid petrol that touch it will be absolutely minimal if any at all, also the tight fit of the pipe wont allow it to go into the tank either, so looks like it should be ok all things considered, I am sad to hear of the trouble you had, can you (Lucky@Lemans) confirm that the issue you had was where the petrol liquid came in contact with the PU18 or equivalent, or did you just use it to seal the pipes so no gas vapour came out like me.
Thanks.