Renault Laguna MK2 Rear Brake Caliper Drawing Needed

[Brian C5]

I am replacing the seals and piston on the rear brake caliper on my 2004 Renault Laguna MK2 1.8 petrol. My problem is I have removed the small seal that is located inside the piston on the handbrake rod and can't remember which way round it goes !!!!! The seal has a chamfer on it and I'm not sure the direction it fits on the rod.
You used to get fiitting instructions with seal kits but not the ones I have purchased !

If anyone can help with a diagram I would be very greatful.

Thanks in advance.