Hi-
        I am hoping that someone out there might know
the answer to this question, or have access to the part
of VW which does... I am trying to figure out what the
gaskets and fuel hose in the syncro fuel system are made
out of. Specificly, I am trying to figure out whether they
happen to be a chloroelastomer like neoprene (or the higher
temp products that dupont makes), a fluroelastomer like
Viton, or something else entirely. Specificly, I am looking
for info on the following parts:

        N 020 281 1     fuel hose
        N 901 005 01    fuel tank float valve gaskets
        251 201 139 A   fuel filler tube gasket

The fuel sender gaskets are also in question, but I don't
have their part numbers handy. All the above parts _appear_
to be made of the same material, all are stamped with VRT
if that makes any difference...

dave