Since it is a well established fact that it is a huge and potentially disasterous and expensive mistake to use thread sealing tape on any fuel system install it is sometimes tough to find safer alternatives. So for anybody in this bind here is the latest and greatest I have found so far.

http://gsasupply.stores.yahoo.net/gaethse.html

This companies products have been used in military maintenance shops for decades now so they are well tried and tested in diesel applications.

 

Looks good. #2 Permatex, and Loctite PST works good too...