It's been atleast 5 years since I fitted driveshaft seals but I've gone and got some replacements today and noticed they now have white plastic teeth.
Which way do these teeth face, into the gearbox or towards the wheel? At the moment I'm getting mixed answer so thought I'd ask on here, in my opinion it's teeth in due to the metal ring

But then I've had people say it's the other way and also someone else say one side is teeth in and the other is teeth out, exactly how the next picture shows.

Rather get them put in right 1st time so I don't need to strip the driveshafts out again and I can enjoy going out in the car again.
Which way do these teeth face, into the gearbox or towards the wheel? At the moment I'm getting mixed answer so thought I'd ask on here, in my opinion it's teeth in due to the metal ring

But then I've had people say it's the other way and also someone else say one side is teeth in and the other is teeth out, exactly how the next picture shows.

Rather get them put in right 1st time so I don't need to strip the driveshafts out again and I can enjoy going out in the car again.