Here is the factory parts book …
The needle valve packing is carried by OMC/BRP as number 0171089 – see
http://www.marineengine.com/newparts/part_search.php?part_num=0171089&x=10&y=5
It also may be fashioned out of heavy gasket material. Some use Teflon plumbers caulk, some use "O" rings.
. . . . . . . 😉
