There's nothing more to it than that it fit the bulb cap well and the light was tight. It takes time.
Well yeah! Never start without rubber ... :)
Replacement ring if the original ring sticks to the burner and you light it without looking carefully forst (happened to me, I wondered why the burner smells so funny until I sah why ...)
Fits well in true old Trangia.
Twinkle necessary accessory. Notice the need when the seal drowns ...
was a suitably sized well worked