You have to buy it seperately. The part number is listed in several places here. Don't use RTV. I don't know how well it seals against that very acidic oil. I personally wouldn't trust it, particularly on the M62 which is much harder to remove and fix later, and has a much lower oil volume to begin with. That'* a risk I wouldn't take on.
See the little red tube? They make it larger, too. I have the big one, as I do this alot on 4 different superchargers that I have. The small one is perfect for a one-time use. I also use it between the rotor casing and gearhousing lightly to prevent boost leaks.
This is the MAXIMUM amount to use. This is a pic of my first rebuild 3 years ago.