I have finally collected all the original parts to assemble a post war 8" Miller headlamp (Hooray). Now I need a gasket to go between the reflector and lens; originally made of cork I am wondering if anyone has tried an "O" ring or some other substitute. I guess I could spend a day of my life cutting and trimming some cork like floor tile but there must be an easier way. I know I could run a bead of silicone around the reflector but that would be my last resort. All suggestions welcome.