la spirotechnique

Hey Divers, I have two spirotechnique royal mistrals. The seats are decent, those can be polished. What I am looking for is the o ring size that is on the removable volcano orifice. Unlike the USD mistrals, you can actually remove and replaced these as they wear out! Does anyone happen to...

Hi , I will be thankful for any info where can I find or make a reproduction of a round yellow riveted label for my vintage MISTRAL regulator. Thanks, Yoram