Teflon tape

The instructions from VDO specified no teflon tape. My sending unit threaded all the way down to where it bottomed out on the oil filter adapter?? I wonder if I could get a couple wraps of tape around the sending unit and still ground? Thanks.

1966 F100 LWB
Balanced 390 .060 over, Comp 270s, gasket matched F427 intake, headers, gasket matched/bowl blended C8AE-H heads, 2-1/2" duals, C-O-M with 3:54 gears and Tracloc.