The ring shown looks perfect. Modern adhesives give a joint that is stronger than the material, just clamping whilst setting is required.
Bobj3, the forums expert on most things has a son who makes these rings, I think for auto use and Bob has shown posts in the past and I'm sure that when he tumbles out of bed and heats up the house, he'll give you all the advice that you require.
So that we know a little about members whose questions we answer, it would be nice, also helpful if you were to fill in your profile, this is aimed at all members who have failed to do this.
Nothing but heaven itself is better than a friend who is really a friend. - Plautus