Attaching a ring-like handle to a castle door

Question

I'd like to attach a round metal looking handle to a castle door such as this one.

I did a search for 'ring' on Bricklink and found the life preserver.

Would this work, or are there better options? I wonder if I could just thread a key ring through a technic brick.

Answer 1

I agree with Alex. There's no reason to settle for a ring, when you could use the ring.

Here's one way to attach it if you want the ring to look like it is hanging down from the door:

Answer 2

Perhaps Minifigure, Utensil Ring 1 x 1 will be a better fit as it is slightly larger than a stud, while life preserver is 3-4 studs in diameter.

Here how it looks when attached to doors you've mentioned: