I think these are ASA flanges, especialy the large one. The large one looks like the 8" outer diameter 4 bolt type, the smaller one also looks like an ASA flange. These are common on diffusion pumps (especially varian), and should have an oring groove in one of the 2 flanges.
Andrew Seltzman
www.rtftechnologies.org
Re: Identify these flange types?
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Re: Identify these flange types?
Andrew Seltzman
www.rtftechnologies.org
www.rtftechnologies.org