This forum is for TDI (Turbo Direct Injection) questions/posts. Non-TDI Motors (Including the 1.6, and 1.9 or other variant turbo diesel motors) should go in the VW Diesel General Forum
All tdi pumps should have seals suitable for ULSD. Of course, their efficacy reduces with age - so eventually they will all leak, but out of the box they should be fine.