THANKEE!!! Well I have read the bulk of that article and it is some good stuff. I am not sure about using Buna-N and Neoprene with alcohol tho. I will have to check on the latest formulations and specs for those materials.

EDIT- Actually the charts show both are OK for Ethanol but Neoprene would not be good with Gasoline. -Hmmmm

I knew there was something about at least one of those. Another name for Buna-N is Nitrile.

I have seen Buna-N (Nitrile) come apart with Gasohol at elevated temperatures. It is probably OK at the temperatures the dispensing equipment is operated at tho.